264 AMERICAN JOURNAL 



1, Scapha 2, Melo 1, Ficulopsis (n. gen.) 1, Fulguraria 2, Ath- 

 leta 2, Volutilithes 1, Mitreola 1, Turricula 1, Latirus 1, Fascio- 

 laria 3, Hemifusus 2, Neptunea 2, Fusus 1, Tritonidea 4, Pollia 

 1, Trophon 1, Hindsia 1, Tritonium 1, Lagena 2, Nassa 2, 

 Pseudoliva 1, Tudicla 1, Rapa 4, Rapana 1, Trichotropis 2, 

 Cancellaria 5, Odostomia 1, Itruvia (n. gen.) 1, Nerinea 2, 

 Cerithium 14. 



Two new genera are described : Ficulopsis, referred to the 

 Volutidoe, a ficoid shell with a heavy, flattened columella and 

 several transverse folds as in Voluta, and Itruvia, of the Pyra- 

 midellidse, with a more or less elevated spire, with the columella 

 solid and twisted, and with a slightly recurved anterior canal. 



The work is done in a thorough, masterly style and gives, had 

 we no other evidence, proof that the author thoroughly under- 

 stands the subject in hand. He, however, shows a timidity in 

 the matter of generic division that we regret to see. We do not 

 desire to be considered hypercritical, in pointing out a few in- 

 stances in which we differ in opinion from Dr. Stoliczka. 



The genus Aporrhais, of which A. pes-pelicani is the type, can- 

 not, by any process of reasoning, according to the views enter- 

 tained at present, be forced to include the long, slender shells 

 with falcate lips, such as A. securifera, &c. Whether they be 

 long, as we believe, to Anchura, or not, is perhaps a matter of 

 opinion. 



Rostellaria palliata is certainly not a Rostellaria. Dr. 

 Stoliczka says that all of the specimens he has are broken at 

 the anterior end, and that " there are no certain indications of a 

 long canal." In a shell broken like the specimen figured, in- 

 dications of an anterior canal could not exist, and we are there- 

 fore decidedly of the opinion that, so far as we can judge from 

 the portions preserved, the shell belongs to Calyptraphorus. 

 The form of the spire, the heavy incrustation and the shape, 

 position and direction of the long, crooked posterior canal are 

 most decidedly those of that genus. Even the polished surface, 

 like that of Eulima, is characteristic of every known species of 

 Calyptraphorous. 



The author has been betrayed into an unfortunate error in 

 his understanding of the genus AtJdeta. This was founded in 

 1853, Proc. Phila. Acad, p. 449, and described as follows : 

 "Ovate, voluta-shaped ; spire short, acute ; columella with plaits 

 as in Voluta. A callous projecting on the shoulder, and cover- 

 ing a portion of the spire." Volutilithes (Athleta) Tuomeyi, 

 Jour. Acad. 2 s. vol. 4, pi. 47, fig. 35, must be taken as a typical 

 species. V. lioderma was made the type of another genus (Lio- 

 derma, Con. ; Proc. Phila. Acad. 1865, p. 184) and is charac- 



