SCHISMOPE. 67 



unibilicate ; aperture large, subcordiform ; peristome simple, poste- 

 riorly a little angulated and reflexed, continuous. 

 Alt. -05, diani. '09 (de Folin). 



Saint Vincent, Cape Verde Is. 



Trochotoma crossei de Fol., Les Fonds de la Mer, i, p. 144, t. 22, 

 f. 6, 7. 



Unfigured species of Schismope. 



Scissurella carinata A. Adams. Shell ovate, depressed ; spire 

 nearly plane; whorls 2 ?, plane, the last radiately striate above the 

 carina (more strongly at the sutures), below the carina ornamented 

 with elevated, transverse cinguli ; base with elevated concentric lines, 

 the interstices cancellated ; aperture oblique ; inner lip receding. 



This species and the others I have named Scisurella have a fora- 

 men instead of a fissure, and would be called by some Schismope or 

 Woodwardia, both of which names I believe to be synonyms of Scis- 

 surella proper. S. carinata has a flattened spire and three prominent 

 keels on the last whorl below the carinate periphery ; it most nearly 

 resembles S. d'orbignyi ; but there are three keels besides the fissural 

 carina. {Ad. in Ann. Mag. N. H. 1862, p. 346.) 



Okosiri, 35 fms. ; Seto-Uchi, 16 fins. ; Gotto, 71 fins. Japan. 



Scissurella modesta A. Adams. Shell ovate, depressed, Stoni- 

 atelliform, narrowly umbilicated ; spire small, scarcely elevated ; 

 last whorl concentrically striated above the carina, below the carina 

 longitudinally plicate ; base ornamented with spiral lirulse ; aper- 

 ture very oblique, transversely ovate. 



A small simple white species, without keels, striated above the 



somewhat rounded periphery, and obsoletely plicate below. (Ad., 



1. c, p. 346.) 



Tabu-Sima, 25 fms. 



Scissurella Miranda A. Adams. Shell ovate, depressed, broadly 

 umbilicated ; spire nearly plane ; last whorl very delicately striate 

 concentrically above the carina, beneath it ornamented with oblique, 

 subnodose, longitudinal, distant plica? ; base with concentric lines ; 

 aperture very oblique, transversely ovate. 



In this small but very pretty species the last whorl is nodosely 

 plicate below the fissural keel. (Ad. 1. c, p. 346.) 



Mino- Sima, 63 fms. 



S. beddomei Petterd. Shell small, turbinately de]3ressed, sor- 

 didly white, dull, thin ; whorls 3J, aj)ical flat, sinus conspicuous with 



