PUPA. 341 



13. PUPA RUPICOLA, Say. 

 Plate LXX. Figuke I. 



P. testa cylindracea, elongatEk, apice obtusa ; anfractibus 

 sex convexis, oblique striatis ; apertura scmi-ovali, dentibus 

 quinque armata ; umbilico perforato. 



SYNONYSIS AND KEFEKENCES. 



Fnpa rtijiicola, Say, Jouru. Acad. II. 163. 



Gould, Boston Journ. IV. 355, pi. 16, f. 13. 



Pfeiffer, Moiiog. Helic. Viv. II. 358. 

 Pupa procera, Gould, Boston Journ. HI. 401, pi. 3, f. 12. 



DESCRIPTION. 



Shell cylindrical, elongated ; epidermis brownish 

 horn-color ; whorls six, convex, the three anterior ones 

 of nearly equal diameter, the three posterior diminisliing 

 very slightly, and forming an obtuse apex ; suture deep ; 

 lip brownish, thickened within, widely reflected ; aper- 

 ture lateral, semi-circular, truncated above by the body 

 ■whorl ; teeth five, one on the middle of the columella 

 prominent, compressed, emarginate in the middle, and 

 often bicuspid ; another at the termination of the axis, 

 marking Internally the situation of the umbilicus, conical, 

 and often composed of two or more tubercles ; a third in 

 the base of the aperture, a fourth upon the outer lip, and 

 a fifth, often massive and prominent, deep in the fauces 

 behind the columellar tooth ; umbilicus minute. 



Length one-tenth, diameter one-twentieth, of an inch. 

 VOL. II. 86 



