180 KLEINELLA-TORNATINID^E. 



posteriorly with the hist whorl, and is straight in the middle (Ad.)^ 

 This is a group of entirely problematic affinities, but, in my 

 opinion, it does not belong to the Actceonidce. The species are here 

 described because precedent has established this position for the 

 group. 



K. cANCELLARis A. Adams. 



Shell oblong, widely and profoundly umbilicated ; spire rather 

 raised, the apex obtuse ; pale brown ; whorls 3^, slightly convex (the 

 last ventricose), regularly cancellated. Aperture oval ; inner lip 

 thin, simple ; outer lip straight in the middle, angulated behind. 

 Length 3i mill. (Ad.). 



Strait of Corea, 63 fms. (Ad.). 



Kleinella cancellaris Ad., Ann. Mag. (3), v, p. 302, 



K. SULCATA A. Adams. 



Shell oblong, thin, turbinate, deeply umbilicated ; spire elevated, 

 conoid; dull white; transversely sulcate, the sulci distant, inter- 

 stices longitudinally closely striated; whorls SI, flat, angulated 

 above; last whorl ventricose. Aperture oblong, anteriorly everted 

 and subeffuse; lip thin, angulated behind (Ad.). 



Suwonado Sea, Japan, 7 fras. {Ad.). 



Kleinella sulcata A. Ad., Ann. Mag. Nat. Hist. (3), ix, p. 295, 

 April, 1862. 



Family TORNATINID^ Fischer. 



Shell spiral, cylindrical or fusiform, external, capable of contain- 

 ing the soft parts ; spire short or sunken and concealed, the apex 

 more or less turned over ; aperture long and narrow, wider below ; 

 columella with a fold or simple; umbilicus none or very narrow. 

 Animal with the foot shorter than the shell, entire behind ; head- 

 shield short, quadrangular, produced in two erected processes behind, 

 near the bases of which are the eyes. Eadula-teeth wanting ; giz- 

 zard armed with three oval, tuberculate plates (See pi. 60). 



These snails differ from Scaphandridce in the shorter diiferently 

 shaped head-shield, the lack of epipodial (lateral) lobes and radula ; 

 the differently shaped gizzard-plates, etc. They are unlike Actceon- 

 idce in wanting operculum and radula. 



Although the characters of the animal are so obvious and distinc- 

 tive, it is by no means easy to classify many species known by the shell 

 alone, certain forms referred to Retusa being excessively similar in 



