BUCCINIDA. 149 
CoMINELLA, Gray. 
Distr.—20 sp. Cape, N. Zealand, Australia. (. limbosa, 
Lam., var. (1, 34). 
Shell bucciniform, marked or spotted, covered with an epi- 
dermis; spire short, acute, last whorl large, ventricose, with a 
posterior depressed groove at the suture, producing a contraction 
at the hind-part of the outer lip. Operculum with apical nucleus. 
H. and A. Adams ( Genera, ii, 615) make Adamsia, Dunker, a 
subgenus of Cominella; the operculum and _ facies of the type 
show it, however, to — Urosalpinx. 
JOSEPHA, Tenison-Woods. Founded upon the @. Tasmanica, 
which differs from Cominella in possessing a plait upon the 
columella, 
Ciera, A. Adams. 
Distr.—11 sp. Fresh water. Borneo, Java, Siam, Cambodia. 
C. nigricans, A. Ad. (1, 35). 
Shell turbinate, covered by an epidermis, aperture ovately 
acute, truncate at base and profoundly sinuate, dextral margin 
regularly arcuate, parietal callus none or thin. Operculum sub- 
trigonal, with apical nucleus. 
First proposed as a genus of the family Melanide, which the 
shell resembles in its form, epidermis and habitat in fresh waters, 
especially reminding one of the genus Hemisinus. The oper- 
culum with its apical nucleus, no less than the lingual dentition, 
whereof the formula is 1:1-1 in Clea, instead of 31:3 as in Melania, 
induced Brot to remove the species to Buccinide ; and the form 
and sculpture of the shell do not contravene such a disposition 
of Clea, its fluviatile distribution being really the strongest 
argument for considering it a Melania. 
CANIDEA, H. Adams. Shell small, fusiform or turbinate, covered 
with an epidermis ; spire longer than the aperture, apex eroded ; 
whorls slightly convex, plicate ; aperture elongately ovate, emar- 
ginated in front; columella truncate; lip simple, sinuated in 
front. Operculum small, unguiculate; nucleus apical. Living 
in fresh water. (C. Helena, Meder (1, 36). C. Cambodiensis 
Rve. (1, 37). 
? 
Eripacuya, Gabb. 
Distr.—E. perforata, Gabb (li, 66). Cretaceous ; California. 
Shell short, robust, subovate to subfusiform, spire moderately 
elevated. Aperture broad, terminating in advance ina very short 
canal or a mere notch; outer lip simple; inner lip more or less 
heavily incrusted. Surface marked by longitudinal ribs and 
revolving lines. 
PsruposuccinuM, Meek and Hayden. 
Distr.—P. Nebrascense, M. and H. (li, 67). Cretaceous ; 
Moreau R. 
