118 K. J. Bush — Marine Gastropods referred to 



(d'Orb.) Bush, T. carinatum (d'Orb.) Tryon = Vitrinella carinata 

 (d'Orb.) Bush, T. pusilla (Pfr.) Poulsen = Pseudorotella piisilla 

 (Pfr.) Fischer, T. {Pseudorotella) semistriata (d'Orb.) Fischer, T. 

 cryptospira (Verrill) Dall. * 



The Rotella cryptospira Verrill (these Trans., vi, 

 p. 241, 1884) from off Cape Hatteras, N. C, in 142 

 fathoms, would seem to be a true Teinostoma, as 

 suggested by Mr, Dall. Figs. 1, 2. 



It is a small, solid, porcellanous, white shell with 

 the umbilicus entirely covered with a rather thick, 

 clearly defined, flat pad of callous deposit, distinctly 

 separated from the columellar lip; edge of the peri- 

 trerae simple, rounded, not sharp, owing to the thick- 

 ness of the shell; but the aperture is not at all "pro- 

 duced and elongated." 



Pseudorotella Fischer, 1857. Type, P. 5e?;w5<nata (d'Orbigny). West Indies. 



" Animal ? Operculum ? 



"Shell small, transparent, globular or flattened, whorls few, finely 

 striated; umbilicus covered over with a brilliant transparent callos- 

 ity; peritreme not continuous, right border curved, simple, acute." 

 Jour, de Conch., vi, p. 52, 1857. 



Type, P. semistriata (d'Orbigny). 



"Shell orbicular, depressed, thin, transparent, white, above trans- 

 versel}' (i. e. concentrically) striate, beneath polished; umbilical cal- 

 lus, shining ; spire very short, obtuse, whorls four, slightly convex; 

 aperture oval. Diameter 1-5™™; height l^m" Histoire L'ile de 

 Cuba, Moll., ii, p. 61 ; atlas, pi. xviii, figs. 20-22, 1853. 



Fischer (Manuel, p. 284) considered this a subgenus of Teino- 

 stovia. 



List of species belonging to the marine fauna of eastern America 

 which have been referred to Pseudorotella : 



Pseudorotella semistriata (d'Orb.) Fischer, P. pusilla (Pfeiffer) 

 Fischer = diaphana (d'Orb.) = Vitri^iella diaphana (d'Orb.) Bush, 

 P. carinata (d'Orb.) Fischer = Vitrinella carinata (d'Orb.) Bush, 

 P. anomala (d'Orb.) Fischer = Vitrinella anomala (d'Orb.) Tryon, 

 P. striata (d'Orb.) Fischer. 



Pseudorotella minuscula sp. nov. 

 Figure 3, a, &, c. 



A smgle, minute, dead shell from station 2283, off Cape Hatteras, 

 N. C, in 14 fathoms, 1884, has the umbilical region entirely covered 



