IUCN threat status:

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Comprehensive Description

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Description

Ophiochondrus stelliger.

 

Plate XIII. Figs. 371- 373.

 

Special Marks. — Disk finely and evenly granulated on both sides. Four slender arm-spines, whereof the uppermost is much the longest.

 

Description of an Individual (Station 320). — Diameter of disk 5 mm. Length of arm 16 mm. Width of arm near disk 1.3 mm. Three mouth-papillæ on each side, whereof the two outer are flattened and squarish, while the inner­most is stout, rounded, tapering, and peg-like. Apex of mouth-angle occupied by the lowest tooth, which sometimes is represented by two blunt, spiniform papilla similar to their next neighbor. Four rather narrow teeth, which sometimes are almost spiniform, but usually are flattened. Mouth-shields much wider than long, with a well-marked obtuse angle inward and the outer side gently curved; length to breadth, .7:1.1. Side mouth-shields long, rather narrow, of nearly equal width, slightly curved, and fully meeting within. First under arm-plate small, longer than broad, hexagonal, with rounded corners; the plates beyond are rather small, wider than long, bounded without by a broad curve, and within by an obtuse angle; the lateral sides are very short, or are confounded in the outer curve. Side arm-plates small, somewhat wider than long, fan-shaped, with inner angle rounded. Disk rather thick, finely and uniformly granulated above and below, about 17 grains in the length of 1 mm. Four cylindrical, tapering, rather slender arm-spines, whereof the uppermost is longest: lengths to that of an arm-joint, 1.1, .6, .5, .4: .6. One small, narrow tentacle-scale. Color in alcohol, straw.

 

Station 320, 600 fathoms, 7 specimens.”

 

(Lyman 1879, 44)

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Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© National Museum of Natural History, Smithsonian Institution

Source: Antarctic Invertebrates Website (NMNH)

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