954 CATALOGUE OF PHANEROPNEUMONA. 
simple, sharp. Operculum thin, yellowish-horny. Height 5}, 
greatest breadth 6, least br. 5} mill. 
Helicina costata, Gray, in Zool. Journ. i. p. 67, t. 6, f.6; Désh. in 
Lam. Mist. viii. p. 161, n. 11; Sow. Thes. n. 22, p. 5, t. 1, f. 20; 
Pfr. Ic. n. 20, p. 22, t. 4, f. 31-33, t. 8, f. 20; Pnewm. Mon. 
p. dol. 
Hab. Jamaica. 
98. HeuicinaA DoMINICENSIS. 
Shell globose-conic, rather solid, crowdedly striated concentrically, 
little shining, whitish, with yellow or fulvous bands; spire 
conic, with the apex pointed ; whorls 6, rather flattened, united 
by a deep suture, the last one more convex, scarcely descend- 
ing; columella extremely short, denticulated at its lower ex- 
tremity, dilated backward into a thin, indistinctly circumscript 
callus; aperture little oblique, semiovate; peristome sharp, 
nearly straight. Operculum thin, shelly, flesh-coloured. Height 
5, greatest breadth 63, least br. 5? mill. 
Helicina Dominicensis, Pfr. in Proc. Z. S. 1850; Preum. Mon. 
p. 352. 
Hab, Waiti (Sallé). 
29, HELICINA ROTELLOIDEA. 
Shell conic, thin, rather smooth, shining, olivaceous-yellowish, 
painted above with brownish-red waving streaks; spire conic, 
rather blunt; whorls 5, somewhat exserted, last slightly an- 
gulated on the periphery, scarcely convex beneath; aperture 
slightly oblique, rather triangular, equally high and broad ; colu- 
mella nearly perpendicular, forming an almost right angle with 
the basal margin of the peristome, which is simple and sharp; 
basal callus extremely thin. Operculum thin, shelly. Height 
4, greatest breadth 53, least br. 5 mill. 
Helicina rotelloidea, Mighels,.in Proc. Bost. Soc. 1845, p. 19; Pfr. 
de. n. 21, p. 23, t. 3, £. 40-48; Pneum. Mon. p. 352. 
Helicina Bronniana, Philippi, in Z. f. MW. 1847, p. 124. 
Hab. Sandwich Islands, Cahu (Mighels). 
30. HELICINA LACINIOSA. 
Shell subconic, rather thin, faintly striated, scarcely shining, 
cinnamon-coloured, irregularly striped and spotted with whitish ; 
spire conoidal, rather pointed; whorls 4-45, scarcely convex, 
the last marked with 1-3 slightly raised on the periphery, 
flattened beneath; columella very short, dilated backward into 
a diffused, shining callus; aperture oblique, semiovate, some- 
what triangular; peristome simple, straight, sharp, its basal 
