. Bulletin of the Natural History Museum Zoology. . Fig. 31. Nuculana acuta. Lateral and dorsal external views of a shell, from Atlantis 283 station 2 from the North America Basin. Scales = lmm. inomuta 1856 and Gould 1862 as synonyms of N. acuta. Verrill (1882) describes in detail differences that he found between N. acuta and Ljamaicensis and which cast doubt as to the synonymy, although Dall (1886) maintains the synonymy of L. jamaicensis. Similarly, we have doubts as to synonymy with Linornata which is a 'gibbose'. 'fuscous', 'sulcate' spe- cies from New Guine
. Bulletin of the Natural History Museum Zoology. . Fig. 31. Nuculana acuta. Lateral and dorsal external views of a shell, from Atlantis 283 station 2 from the North America Basin. Scales = lmm. inomuta 1856 and Gould 1862 as synonyms of N. acuta. Verrill (1882) describes in detail differences that he found between N. acuta and Ljamaicensis and which cast doubt as to the synonymy, although Dall (1886) maintains the synonymy of L. jamaicensis. Similarly, we have doubts as to synonymy with Linornata which is a 'gibbose'. 'fuscous', 'sulcate' spe- cies from New Guinea, Thus, although Nuculana acuta is a well-described species ( Verrill 1882, 1884; Dall, 1886; Abbott, 1974) because there are closely related species in the Atlantic and elsewhere, we include a description here. It occurs off the East coast of North America, in the Caribbean Sea and off Brazil at depths from the outer shelf to lower slope depths, 97-2909m (James, 1972). Shell description (Figs 30, 31) Shell moderately large, elongate, somewhat inflated, rostrate, ornamented with deep concentric ridges flattened at the apex, rostral ridge from umbo to ventral limit of rostrum, very faint radial ridge from umbo to antero-ventral margin, yellow periostracum; lunule. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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