OOCORYTHID^E. 267 



topped ridges, and nearly equal interspaces, the latter longitudi- 

 nally striate ; pale fawn-color, with undulating, longitudinal 

 darker streaks. Length, 3-6 inches. 



China. 

 P. elongata, Gray, is probably a synonym. 



P. TESSELLATA, Kobelt. PI. 5, fig. 31. 



Pyriform, spire subimmersed, clathrate ; whitish, regularly 

 distantty spotted with chestnut in spiral series. 



Length, 1-5-1-75 inches. 



Rosemary 7s., Australia. 



A beautiful species, of which a fine series is before me. 



FAMILY OOCORYTHID^, Fischer, 1884. 



Shell bucciniform, aperture semioval, lip varicose externally, 

 columella obliquely truncate at base. Operculum corneous, 

 paucispiral. 



Animal with broad head and large, sharp tentacles, no eyes, 

 siphon short, foot short and wide, obtuse behind, with an anterior 

 marginal excision, branchiae very unequal. Dentition 2*1*1'1'2, 

 the central tooth multicuspid , the laterals multicuspid, arcuated, 

 the marginals simple and sharp (PI. 6, fig. 39). Appears to con- 

 nect Dolium with the Linatella group of Triton. 



Genus OOCORYS, Fischer, 1884. 



Characters those of the family. Benthodolium, Yerrill and 

 Smith, is a synonym. 



0. SULCATA, Fischer. PI. 6, figs. 42, 40, 41. 



Shell ventricose, thin, spirall} 7 closely sculptured, with growth- 

 lines crossing both ribs and interspaces ; epidermis thin, brownish- 

 yellow, not hairy ; color white and translucent beneath the 

 epidermis, inner lip thinly callous. Length, 45 mill. 

 Deep Sea, off Southern Coast of Neio England. 



Off West Africa and Azores, from 1258 to 4000 metres. 

 Benthodolium abyssorum, Verrill and Smith (figs. 40, 41), is a 

 synonym. 



