416 TURCICA. 



T. CAFFEA Gabb. 



Shell conical, thin ; spire elevated ; one nuclear whorl smooth ; 5 

 perfect whorls, subangulate at the margin, obliquely flat above ; 

 body-whorl very slightly convex at the base ; suture strongly im- 

 pressed ; surface marked by revolving tubercular ribs, about 18 on 

 the body-whorl, one broad one on the margin, and about 8 or 9 on 

 the under side ; these ribs are less numerous on the preceding volu- 

 tions, only 4 can be counted on the upper side of the penultimate 

 whorl ; the tubercles are arranged so as to present an irregular quin- 

 cunx ; epidermis a rich coffee-brown, darker between the tubercles 

 than on their summits ; aperture obliquely quadrangular, outer lip 

 and base acute, internally pearly white, columella bearing two strong 

 folds, the lower one of which borders the truncated end and terminates 

 in a faint tubercular enlargement ; behind the columella is a slight 

 groove running from the base to the end of the upper columellar 

 fold. Alt. 13, diam. 14 mill. (Gabb.) 



Monterey, 20 fms. ; Post pliocene of San Pedro & Sta. Barbara. 



Ptychostylis caffea GABB, Proc. Cal. Acad. Nat. Sci. iii, p. 187, 

 1865. 



Fossil specimens an inch in alt. have been found. 



Section PERRINIA H. and A. Adams. 

 T. ANGULIFERA A. Adams. 



Shell elevated-conoidal, imperforate; whorls nearly plane, imbri- 

 cated, angulated below, longitudinally nodose-costate, ornamented 

 with transverse girdles of subdistant tubercles, interstices channelled ; 

 last whorl subangulate ; columella straight, short, terminating in a 

 small tooth ; lip subdu plicate, sulcate inside. (Ad.) 



Puerto Galero, Id. of Mindoro, 6 fms. 



Monodonta angulifera AD., P. Z. S. 1851, p. 176. 



T. LIROSTOMA A. Adams. 



Shell elevated-conical, imperforate, whitish ; whorls plane, with 

 three strong granulate cinguli, interstices deeply clathrate; suture 

 canaliculate ; last whorl angulated ; columella tuberculate ; lip 

 strongly lirate within. (Ad.) 



Lord Hood's Island, 8-10 fms. 



Monodonta lirostoma AD., P. Z. S. 1851, p. 177. 



