SYRNOLOPSIS. 815 



P, CCELATA, P. SULCIFERA, P. PUNCTIGERA, P. METULA, P. VITTATA, 



all of A. Adams. Japan. 



P. TENELLA, A. Aflams. Philippines. 



P. ruNCTicuLATA, P. siNUATA, Gould. China Seas. 



P. ACUMINATA, Gould. JajMU. 



Section Mumiola, A. Ad., 1863. 

 P. spiRATA, A. Ad. PL 74, figs. 52-54. 



White, under a j'ellowish or brownish epidermis, longitudi- 

 nally plicate, transversely grooved, suture channeled; whorls 8, 

 gradate ; columella with an oblique fold. Length, 7 mill. 



Philippines. 

 P. ciNCTA, Carpenter. PI. 74, fig. 51. 



White; whorls somewhat rounded, with deep suture, spirall}^ 

 costate, decussated b}^ longitudinal riblets, most apparent near 

 the suture. Length, 3 mill. 



Southern California. 



Figured from a specimen. 



Un figured Species. 



P. TESSELLATA, P. RETicosA, A. Adams. Japan. 



P. OVATA, p. ROTUNDATA, P. OBLONGA, P. NODOSA, all of Carpenter. 



Mazallan. 



Section Careliopsis, Morch, 1874. 

 P. STYLiFORMis, Morch. (Unfigured.) West Indies. 



Genus SYRNOLOPSIS, E. A. Smith, 1880. 

 S. LACUSTRis, Smith. PI. 74, figs. 55, 5G. 



Smooth, gloss}', imperforate, yellowish horn-color, banded 

 with white beneath the suture ; whorls 12, flattened, finely 

 striated b}' flexuous growth-lines, sometimes showing traces of 

 spiral strije ; columella strongl}- plaited above ; outer lip with 

 one or two lamellaj, far within. 



Lake Tanganyika^ E. Africa. 



Bourguignat, w'ho describes (but without figures) several new 

 species, divides them into two groups, the first having two 



