GEOMELANIA. 7 
subovalis; perist. erassum, non reflexum; operculum ovale, 
paucispirum, tenue, pallidum. — Long. 3 lim. (Q. et G-.) 
Cyclostoma striata Quoy et Gaim. Noy. Astrol. IL. p. 186. t. 12. f. 27—30. 
Truncatella Quoyi Pfr. iu Zeitschr. f. Mal. 1846. p. 187. 
ZAcicula striata Gray Catal. Cycl. p. 68. N. 3. 
Habitat in insula Vanikoro. 
l[. Geomelania Pfr. 
Animal sieut Aciculae (teste Gray). — Operculum mem- 
branaceum, pellucidum, ovale, anfractibus paucis rapidissime 
accrescentibus, nucleo basali. — Testa imperforata, turrita ; 
apertura integra, effusa; peristoma simplex, expansum, mar- 
ginibus junctis, basali in appendicem sublinguaeformem producto. 
Gcomelania. Pfr. in Proc. Zool. Soc. 1845. p. 45; Z. f. M. 1847. p. 111; 
1849. p. 115; Chemn. ed. II. Cycl. p. 213. 
— "dams Contrib. to Conch. N. 2. p. 17. 
— Gray Catal. Cycloph. p. 68. 
1l. G. Jamnicensis Pfr. 6 
T.turrita, truncata, solidula, arcuatim et subconferte cos- 
tata, parum nitens, alba; anfr. 6— convexiuscuh, ultimus 
basi subangulatus, fere '/, longitudinis formans; apertura sub- 
verticalis, ovalis;  perist. continuum, marginibus superné 
angulatim junctis, dextro et basali intus incrassatis, subreflexis, 
columellari appresso; appendix linguaeformis acuta, porrecta. 
— Long. 12— 14, diam. 3'/, mill. (Coll. Nr. 4.) 
Geomelania Jamaicensis Pfr. in Proc. Zool. Soc. 1845, p. 45. 
— — Chemn. ed. IX. Cycl. p. 214. t. 30. f. 19. 20. 
-— s Adams Contrib. to Conch. N. 2. p. 18. *). 
— — Gray Cat. Cycloph. p. 68. 
Habitat in insula Jamaica. 
*) Shell conice-cylindrical, whitish; densely sculptured with strong trans- 
verse somewhat angular ribs, which become obsolete only at the anterior 
extremity of the last. whorl; spire with rectilinear outlines; apex truncate; 
nearly 7 whorls remaining, rather convex, with a well impressed suture; 
aperture ovate, widely and deeply effuse; labrum much thickened, reflected, 
very much produced in the lower part; labium rather thick, separated by a 
slight groove from the penultimate whorl, separated above from the labrum 
by a small sinus. — Mean diverg. 169. (Adams l. c.) 
