94 EISS0IDJ3. 



V8. Rissoina semiplicata. 



Rissoina semiplicata, Pease, P. Zool. S. 1862, HowJand Is., long. S~, dlam. 1\ 

 mil., and Am. J. Conch. Ill, ^l. XXIV, Jig. 29 ; Conch.- Cab. II, pi. 15 A, 

 Jig. 2. 



1 Upolu ; ex Mus. Godeffroy [4, If]. 

 3 Paumotus ; coll. H. Pease, Esq. 



Possibly better classed as a var. of the preceding, the two 

 denticulations within the aperture are quite distinct, though 

 not recorded in Pease's descriptions. It can always be dis- 

 tinguished by the markedly shorter spire, more tumid last 

 whorl, less everted aperture and especially by the ribs on the 

 penultimate whorl; the above will also distinguish it from 

 E, coronata, Reel., possibly a mere var. of B. bidentata. 



79. Rissoina moravica. 



Eissoina moravica. Homes, Foss. Moll. Tert, Wien, 1856. 



1 Steiuabrunn ; coll. Herr Schwartz von Mohrenstern. 



80. Rissoina peasiana. 



Rissoina peasiana, G. Nevill, Weinkauff", Conch.-Cah. II, 1881, pi, 15 A 

 Jig. 6, Earotonga. 



A fine species of ten whorls, quite distinct from B. tridentata 

 \_=curta], the whorls are scarcely convex, the last five whorls 

 smooth, the three preceding coarsely ribbed ; no teeth within 

 the aperture, a small dentiform thickening on the parietal mar- 

 gin, near the outer lip ; some resemblance to B. macrostoma, 

 I)esh. [fossil]. 



Long, 12, diam. 5 mil. [the two apical whorls wanting]. 



1 Rarotonga [type] ; ex Mus. Godeffroy [as " R. ? curta. Sow."] 



81. Rissoina subulina. 



Rissoina subulina, Weinlcauff, Conch.-Cah. II, 1881, pi. 15 A, Jig. 8, Japan 

 — long. 3zi diam. 1\ mil. 



2 Japan [type] ; ex Mr. R. Damon ["coll. A. Adams"]. 



