230 EULIMID^. 



though not notched canal. E. fusiformis, Gabb (Ixviii, 86). 

 Tertiary ; W. I. The existence of a sutural band shows this 

 group to be properly placed in Eulimidse. 



Leiostraca, H. and A. Adams. 



Syn. — Balcis, Leach. 



Distr. — A few subtropical species. W. Indies, Mazatlan, etc. 

 L. subulata, Donov. (Ixviii, 87). 



Shell subulate, turriculated, whorls a little flattened, smooth, 

 polished, a slight varix on each side of the spire ; aperture 

 oblong, entire ; inner lip distinct, callous, a little sinuous in the 

 middle, outer lip flexuous. 



MUCRONALiA, A. Ad. Shell tubulate, straight, pupoidal, the 

 apex mucronate ; whorls simple, aperture oblong. Distr. — 5 sp. 

 L. exilis, A. Ad. Japan. 



SELMA, A. Ad. Shell oblong-ovate, subdiaphanous, spire short, 

 last whorl large ; aperture elongately ovate, columella arcuate, 

 obliquely subplicate. 1 sp. Japan. 



EucHRYSALis, Laubc, 1866. 



Distr. — G sp. Fossil. Jurassic, Cretaceous ; Europe, India. 

 E. bisalcata, d'Orb. 



Differs from Leiostraca by being pupoid, attenuated towards 

 each end and thickened in the middle ; last whorl large, much 

 contracted posteriorly, aperture proportionally very small. 

 Surface generally smooth ; inner lip somewhat thickened and 

 arcuate, outer lip sharp, sinuous. 



[PuTiLLA, Adams. 

 Shell turbinate, solid, pellucid; aperture subquadrate, ante- 

 riorly subeffuse, inner lip straight, thickened, columella rimate. 

 I have arranged this genus in Rissoid^, but it may belong here.] 



Niso, Risso. 



Syn. — Bonellia, Deshayes. Janella, Grateloup. 



Distr. — China, W. America. Fossil. Cretaceous ; Eocene of 

 Paris. N. goniostoma, Ads. (Ixviii, 88). 



Shell turriculated, smooth, polished, apex very sharp; umbil- 

 icus perforated or wide ; aperture small, angulated above and 

 below. 



ORiNA, A. Ad. Shell conoidal, profoundl}^ umbilicated, white, 

 thin, smooth, whorls flattened, aperture subquadrate, with^a 

 single columellar plait. 



PALiEONiso, Gemm., 1878. Shell long, oval, cylindrical, outer 

 lip with a posterior sinus. N. pupoides, Gemm. Lias. 



GLiMACiNA, Gemm., 1878. Turreted, without umbilicus, first 

 whorls scalariform, mouth oval, angular behind, rounded in 

 front. N. Catharinae, Gemm. Lias. 



