dcsimg
Description
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"Hansen, having only a single species at command, notes that in this genus, as distinguished from Alcirona, the hinder part of the body is naked, that is to say, not setigerous. But this character is not applicable to the new species about to be described." (Stebbing, 1904)

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Conner, Caitlyn
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maldivesnlaccadives:nid:245:tid_chapter:261
Description
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"The head (at least in the adult male) has the front upturned into a little horn, and near the hind margin, adjacent to the rather large dark eyes, there are a pair of tubercles. The appearance is therefore something like that of Excorallana tricornis (Hansen). The first segment of the peraeon is considerably the longest, the seventh the shortest. The front side-plates are rounded behind, the three hinder pairs somewhat quadrate and obliquely ridged. The first segment of the pleon is medio-dorsally obsolete; the fifth has its angles a little produced but flanked by those of the fourth segment. The telsonic segment has the sides very slightly sinuous, fringed with setae, and converging to a rather broad truncate apex carrying plumose setae and six spines. The dorsal surface of this segment is armed with twenty-six rather spine-like setae, and there are a few on other parts of the back. The first antennae have the first and second joints coalescent, lying under the projecting front of the head, the third joint a little shorter than the composite one, the six-jointed flagellum shorter than the peduncle, and the whole appendage not longer than the peduncle of the second antennae. This is robust, with the first three joints together equalling the stout but not very elongate fourth, the fifth shorter and much narrower than the fourth. The flagellum, slightly longer than the peduncle, has numerous setae on the first seven of its thirteen joints. The frontal lamina is pentagonal. The mandibles, as usual in this family, are very firmly attached to the lower lip, and have their free ends closely clipped in by the short upper lip. The trunk of the mandible, besides having a curved margin, makes a rather strong bend of the whole plate near the narrowed centre. The apex has no well-defined uncinate tooth as in Corallana and Excorallana, but some ill-defined dentations, accompanied by a row of spine-teeth, which on one of the mandibles point backward. The palp is attached near the base, and has the middle joint the longest. The outer plate of the first maxillae ends in a single, very long, strongly curved spine, which is only seen in its natural shape when the trunk of the maxilla is set more or less edgewise. The second maxillae are nearly as in L. kroyeri, Hansen, the broad 'lacinia of the second joint' being surmounted by an almost linear third joint which here carries a short seta in addition to the long one described for L. kroyeri. The maxillipeds have the second joint a little longer than wide, the third, fourth, and seventh joints small, and the fifth and sixth not very large. The first gnathopods have the second and third joints channelled, the third carrying a long spine on the front apex and a stout one on the hinder, the fourth joint is bordered with five stout spines, the apical much the largest; the fifth joint is hidden between its neighbours ; the sixth is not strongly armed; the finger is large, and by help of its long nail strongly curved. The second gnathopods scarcely differ from the first in structure, except that the fifth joint is rather more conspicuous. The first peraeopods are like the second gnathopods. The four following pairs are successively longer, otherwise agreeing closely together in structure, the second joint broad, broadest in the fourth peraeopods, the fourth joint with the hind apex broadly produced, the third to the sixth but especially the fifth furnished with numerous spines on the apical border, the sixth joint short, a little longer than the strongly curved finger. In the second pleopods the male appendage has an acute apex, not nearly reaching the end of the ramus. The inner branch of the uropods reaches beyond the telsonic segment; it is fringed with plumose setae and has nine spines on the broadly rounded distal margin. The much narrower outer ramus does not reach beyond the telsonic segment; it carries eight spines among a fringing of long setae. The colour is light, speckled with scattered flecks of brown." (Stebbing, 1904)

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Conner, Caitlyn
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Maldives and Laccadives LifeDesk
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maldivesnlaccadives:nid:252:tid_chapter:261
Description
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"There is so much resemblance between this and the preceding species [Lanocira Gardnieri] that, when the points of difference have been noticed, the question will still remain whether they may not possibly depend on difference of sex and age in the specimens examined.

The form about to be described was a female carrying numerous young ones, with their dark eyes showing conspicuously through the marsupium.

The head is smooth, the telsonic segment is broadly rounded, not at all apically truncate dorsally sprinkled with setiform spines, which seem to be less stiff than those in the other species and not arranged in the same order. Round the apical border the armature was for the most part worn away, but in the young there are six spines with intervening setae just as in L. gardineri.

The first antennae have a five-jointed flagellum, its first joint much the longest, the last two minute, as is the case in the young taken from the marsupium.

The second antennae are not specially robust ; the flagellum is thirteen-jointed.

The mouth-organs do not give much assistance, because as shown in the figure the first maxilla of the young one is normal, as was also the case with a larger juvenile specimen not taken from the pouch of the mother, but this organ in the mother itself has a comparatively short terminal hook and a short oval inner plate. This form of the first maxilla is probably therefore a casual abnormality. The maxillipeds are very short, with the vibratory plate of the second joint extending to the top of the sixth joint. In the maxillipeds of the juvenile specimens there is nothing to show that the shortness of these appendages is abnormal, but as they are without the vibratory plate of the female comparison is not easy.

The peraeopods are rather more slender than in L. gardineri. " (Stebbing, 1904)

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Conner, Caitlyn
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Maldives and Laccadives LifeDesk
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maldivesnlaccadives:nid:254:tid_chapter:261
Habitat
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Mahlosmadulu Atoll, at 20 fathoms, on coarse sand and rubble." (Stebbing,1904)

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Conner, Caitlyn
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ID
maldivesnlaccadives:nid:252:tid_chapter:289
Habitat
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"Mahlosmadulu Atoll, taken along with Lanocira gardinen at 20 fathoms." (Stebbing, 1904)

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Conner, Caitlyn
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ID
maldivesnlaccadives:nid:254:tid_chapter:289
Size
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"A little under 7 mm., by a breadth of nearly 3 mm. Another specimen, smooth-headed, but apparently of the same species, was 4.5 mm. long by 2 mm. broad." (Stebbing, 1904)

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author
Conner, Caitlyn
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ID
maldivesnlaccadives:nid:252:tid_chapter:281
Size
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"5”25 mm., by a breadth of 2 ram. There were also two small specimens, each under 3 mm. long." (Stebbing, 1904)

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cc-publicdomain
author
Conner, Caitlyn
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Maldives and Laccadives LifeDesk
ID
maldivesnlaccadives:nid:254:tid_chapter:281