386 HELICINA $. 10. 
niusculi, ultimus subcarinatus, basi convexiusculus; apertura 
parum obliqua, subtriangularis; columella tenuis, basi nodi- 
fera; perist. simplex, angulatim. expansum, margine supero 
sinuato; callus basalis tenuissimus. — Operc.? — Diam. maj. 
21, min. 17, alt. 14 mill. (Mus. Cuming.) 
Heliciva Somerbyana  Pfr. in. Proc. Zool. Soc. 1848. p. 124. 
— — Chema. ed. IL. N- 65. p. 50. t. 6. f. 9:210. 
Habitat. Guatemala. ( Lattre). 
667 1041. ER. oecidentalis Gwuildinmnz. 
T. depressa, tenuiuscula, lineolis obliquis subgranulata, 
albo-flavida, rufo nebulosa et variegata; spira brevis, conoidea, 
submucronata; anfr. 6 planiusculi, ultimus depressus, angula- 
tus, basi fere planus; apertura perobliqua, triangularis; colu- 
mella brevis, basi subtuberculata, retrorsum in callum diffusum 
dilatata; perist. expansum, reflexum, margine supero depresso. 
—  Operc. semiovale, nigro-castaneum. — Diam. maj. 19, 
min. 15, alt. 10'/, mill. (Mus. Cuming.) 
Helicina fasciata Guild. in. Linn. 'Trans. XIV. 2. p. 339. Nec Lam. 
-— occidentalis Guild. in Zool. Journ. III. p. 529. t. 15. f. 6—10. *) 
T — Desh. in Lam. hist. VIII. p. 164. N. 19. 
-— — Som. Thes. N. 30. p. 7. £. 2. f.. 86; 87. **) 
— E Chemn "ed II- N-.G62:p.. 5i. 06-62 4:019 20: f PAN 
f. 13. (ex Guild.) 
Pachytoma occidentalis Smains. Malac. p. 337. (p. 184. f. 28.) 
8. Minor, distinctius rubro-fasciata. 
Habitat in insula St. Vincentii, 2000^ supra Oceanum. 
668 105. H8. namnoena Pfr. 
T. subsemiglobosa, solidiuscula, oblique strratula, lineisque 
impressis, concentricis, distantibus sculpta, nitidula, roseo et 
luteo vel albo variegata; spira convexa, mucronulata; anfr. 
5'/, vix convexiuseuli, ultimus infra medium carinatus, basi 
subplanus; apertura obliqua, subtriangularis, intus flava; colu- 
mella brevis, verticaliter subrimata, basi angulosa, retrorsum 
*) T. flavida, superne rufo-nebulosa, subtus unifasciata; columella lac- 
tea, labro candido; anfr. 6; operculo brunneo, margine pallido. — 8. Superne 
trifasciata, fascia media majori. — y. Superne rufo varia, margine immaeu- 
lato. (Guild. l. c.) 
**,) 'T, depressa, reticulata; obsoletissime carinata; columella rotundata ; 
labio externo expanso, reflexo: operculo corneo. (Sow. l. e.) 
