“Yoldia (Yoldiella) chilenica DALL, n. sp.
Shell small, tumid, white with a polished pale yellow periostracum, inequilateral, the anterior side shorter, rounded; posterior longer, rounded below, straight above, and almost pointed at the upper posterior angle; ligament obscure, amphidetic; beaks low, adjacent, showing the protoconch; no lunule, a feebly impressed escutcheon with the valve margins medially prominent; surface of the disk feebly, irregularly, concentrically striated; valves not gaping; interior white, porcellanous, with a wide but short pallial sinus, rounded in front; seventeen posterior and nineteen anterior hinge teeth separated by a short gap with a small, deep, triangular pit for the resilium. Length of shell, 11.5 ; of posterior end, 6.0; alt. 6.5 ; max. diam. 5.2 mm.
U. S. S. "Albatross," station 2731, on the southern coast of Chile (Lat. 51°52' S.), in 348 fathoms, mud, bottom temperature 50° F. U. S. N. Mus. 96,923. Also at station 2782, in 258 fathoms, mud, temperature, 48° F.
This pretty little species looks something like the young of Y. thraciaeformis (cf. Hanley, Mon. Nuculacea, fig. 4), but is entirely unlike any species reported from the region mentioned.”
(Dall, 1908: 380-381)
- Dall, W. H. 1908. The Mollusca and the Brachiopoda. Bulletin of the Museum of Comparative Zoology, 43(6): 205-487. http://invertebrates.si.edu/antiz/taxon_view.cfm?mode=bibliography&citation=1086
Catalog Number: USNM 96923
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Collector(s): United States Fish Commission
Locality: W coast Patagonia (S coast of Chile)
Depth (m): 636 to 636
Vessel: Albatross R/V
- Syntype: Bull. Mus. Comp. Zool. 43(6): 219,380.
Water temperature and chemistry ranges based on 1 sample.
Depth range (m): 636 - 636
Temperature range (°C): 4.143 - 4.143
Nitrate (umol/L): 29.642 - 29.642
Salinity (PPS): 34.196 - 34.196
Oxygen (ml/l): 5.675 - 5.675
Phosphate (umol/l): 1.978 - 1.978
Silicate (umol/l): 26.497 - 26.497
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