396 BULLETIN OF THE 



Family SCISSURELLID^. 



Genus SCISSURELLA Orbigny. 



Section SCHIZOTROCHUS Monterosato. 



Scissurella crispata Fleming. 



This widely spread species has been found off the eastern coast of the United 

 States by the U. S. Fish Commission, the Challenger, and by Dr. Rush of the 

 U. S. Navy. 



Section SCISSURELLA s. s. 



Scissurella alta Watson. 



Scissurella alta Watson, Chall. Rep, Gastr., p. 113, pi. viii. fig. 1, 1885. 



Habitat. Off Barbados, in 100 fnis., Blake Expedition. Off Culebra Island, 

 Antilles, in 390 fnis., Challenger. 



A single specimen of this interesting species was found in the mud filling a 

 larger shell from the above locality. 



Family PLEUROTOMARIID^. 



Pleurotomariidoe Dall, Bull. M. C. Z., IX. p. 77, 1881. 



I cannot follow Dr. Fischer in placing the Scissurellidce in this family. The 

 differences of the radula alone seem sufficient to separate them, and the absence 

 of cirri on the epipodium, as well as the peculiar lappets of Scissurella, confirm 

 the division, from my point of view. 



Genus PLEUROTOMARIA Sowerbt. 



Pleurotomaria J. Sowerby, Min. Conch., III. p. 139, pi. cclxxviii., Dec, 1821. 

 Pleurotomaire (in) Defrance, Tabl. des corps Foss., p. 114, 1824. (No description.) 

 Pleurotomaria " i:)efrance," J. de C. Sowerby, Min. Conch., VII. p. 69, pi. 640, 



Nov., 1844. 

 Pleurotomaria Dall, Bull. M. C. Z., IX. p. 78, 1881, H. Woodward, Geol. Mag., II., 



1885, p. 433. 



Dr. H. Woodward in his excellent paper on this genus has overlooked the 

 application of the name Pleurotomaria, and the statement of its essential char- 

 acter, by James Sowerby, in 1821. The facts are : 1. James Sowerby uses and 

 defines the name in 1821, though he does not definitely adopt it; he refers it 

 to no other author. 2. Defrance never published the name Pleurotomaria; he 

 used a French form of it in his table of fossils, without a definition, and with- 



