262 RISSOID Al. 
PHOSINELLA, Moérch. Shell reticulated, aperture profoundly 
sinuated. Operculum with styliform apophysis, denticulate 
posteriorly. R&. Sagraiana, d’Orb. (1xxii, 37). 
SCHWARTZIELLA, Nevill. Aperture without basal emargination. 
R. coronata (ixxii, 34). . 
EATONIELLA, Dall. (Eatonia, E. A. Smith.) Shell rissoid, 
smooth; aperture subcirecular, peristome simple, continuous, 
the labral margin not thickened. Operculum  paucispiral, 
nucleus near the base, with an interior rib or ossicle. Differs 
from Rissoina in the absence of the basal, faint channel of the 
aperture and thin lip. Dzstr.—3 sp. Kerguelen’s Island. AR. 
Kerguelenensis, Smith (1xxii, 35, 36). 
MICROSTELMA, A. Ad., 1863. Shell turreted-ovate, rimate ; 
spire conic; whorls longitudinally plicate; aperture oblong, 
produced anteriorly, subcanaliculate ; inner lip thickened, outer 
lip simple. D¢str.—R. dedala, A. Ad. Japan. 
BARLEEIA, Clark. 
Etym.—Named in honor of G. Barlee. 
Distr.—Europe, W. America, ete. B. rubra, Ads. (1xxii, 38). 
Shell conically turbinated ; whorls rounded, smooth or slightly 
striated ; aperture oval, entire, rounded in front ; margin sharp. 
Operculum calcareous, subangular, with an internal rib-like 
process. 
Operculigerous lobe simple; foot slightly emarginate poste- 
riorly. The tentacles in this genus are short, broad, rounded 
at the tips and not setaceous ; the eyes are large, on inflations 
at the outer bases of the tentacles; the rostrum is simple and 
not cloven; the foot is emarginate behind, and the operculum 
lobe is simple. The operculum is subannular as in Rissoella, 
and is furnished with a similar internal appendage; Rissoina 
has a similar appendage, but the operculum in that genus is 
paucispiral. 
Bacuna, H. and Adams, 1863. 
Distr.—B. striolata, H. and A. Adams. China Sea. 
Shell resembling Eulima, but without enamel; whorls spirally 
striated, inner lip thickened, as in the next genus, outer lip 
without a varix, produced either in the middle or somewhat. 
anteriorly. The classification of Bacula in this place is only 
provisional. 
KerLostoma, Desh., 1848. 
Syn.—Paryphostoma, Bayan., 1873. 
Distr.—i Cret. and 6 Eocene sp. Europe, India. K. eximia, 
Desh. (1xxii, 39). 
Elongate, turriculated, frequently nearly smooth, aperture 
ovate, oblique, entire, narrow, subcanaliculate behind, truncate, 
subeffuse anteriorly, smooth within; both lips thickened, the 
