JAPANESE MOLLUSKS, DELPHINULID.^. 91 



Phasianella oligomphala n. sp. PI. VIII, fig. 8. 



Shell ovate-turrited, smooth, hardly shining, perforated. Dotted 

 in spiral order with red on a pale ground, often having in addition 

 some girdles of white spots, and very oblique snow-white stripes 

 descending from the suture. Whorls 4i, well rounded, the sutures 

 deep, the apex subacute. Aperture round-ovate, about half the 

 shell's length ; inner lip separated from the body by a long, narrow 

 umbilical fissure, which is much reduced in some shells. Operculum 

 white outside. Alt. 4-35, diam. 2*8 ram. 



Nemoto and Tokyo Harbor (Stearns). 



The color patterns of this little Tricolta are similar to those of the 

 preceding species, but it is far slenderer than that, and perforated. 



Phasianella (Orthomesus) modesta Gld. PI. VI, figs. 29, 30. 

 Pils., Man. Conch., X, p. 183. 



Loo Choo (Stimp.) ; Nemoto (Stearns) ; IST. shore Prov. Tango 

 (Gaines). 



It is not without some doubt that I identify these shells with 

 Gould's unfigured species, but they agree with his short description 

 as far as that goes. 



P. modesta gouldii n. var. PI. VI, fig. 31. 



Shell the shape of P. kochii Phil., clear red, showing under the 

 lens dense microscopic redder spiral lines and toward the base some 

 spaced red spirals with remote, white specks. Marked above the 

 periphery with a few bold oblique stripes of snow-white ; a subsutural 

 band mottled with blackish. 



This form occurs with the preceding, of which I consider it a 

 variety. It is probably what Dunker lists as P. capensis. 



Dunker (Index, p. 127) reports Phasianella variegata, P.elongata 

 and P. capensis from Japan, the last on Schrenck's authority. The 

 first of these was perhaps Phasianella ( Orthomesus) modesta. The 

 other two were incorrect identifications. The S. African species 

 named are of the group of P. pulla, while the above Japanese forms 

 belong to Orthomesus, as is shown by their spaced capillary lines. 



DELPaiNULiD.a:. 



Delphinula delphinula Linn. D. laciniata Lam., Man. Coneh., X, p. 266. 

 Japan (Stearns, No. 1,127); Nagasaki (Lischke, D. atrata). 

 Several specimens of the typical form, and var. atrata Rve. 



