408 
ALCADIA. 
Helicina palliata Adams Contrib. to Conch. N. 1. p. 13. *) 
/?. Peristomate extus intusqne perincrassato. 
Helicina palliata var. labiosa Adams Contr. N. 8. p. 134. 
Habitat in insula Jamaica. 
718 7. A. Brownei Gray. 
T. depresso-conoidea, tenuiuscula, striatula, nitidula, dia- 
phana, fusca; spira late conoidea, acutiuscula; anfr. sub- 5 vix 
convexiusculi , ultimus antice paululum descendens , basi sub- 
planulatus; apertura obliqua, triangulari - semioyalis ; columella 
brevis, in dentem antrorsum arcuatum desinens, fissura pro- 
funda, latiuscula, arcuata a perist. albo, subincrassato, expanso 
separata ; callus basalis semicircularis , medio crassus, albus. — 
Operc. subcorneum. — Diam. maj. 13, min. ll 2 / 3 > a-lt. 9 mill. 
(Coll. Nr. 80.) 
Helicina Brownii Gray in Zool. Journ. I. p. 69. t. 6. f. 13. **) 
— — Desk, in Lam. hist. VIII. p. 163. N. 17. 
— — Sow. Thes. N. 14. p. 4. t. 1. f. 7. 8. ***) 
— — Chemn. ed. II. N. 30. p. 28. t. 3. f. 17. 18. 
Helix Brownii Wood Ind. Suppl. t. 8. f. 63. 
Browne Jamaic. t. 40. f. 1. Cochlea n. 11. 
/?. Testa lutea : 
Helicina Brownii var. Chemn. 1. c. t. 6. f. 21. 22. 
Habitat in insula Jamaica. 
719 8. A. eitrinolabris Adams. 
T. depresso - globosa , solida, striatula, rubra, epidermide 
minute pilosa induta; spira late conoidea, acutiuscula; anfr. 5 
parum convexi, ultimus vix descendens, basi convexiusculus ; 
apertura perobliqua, semiovalis ; columella brevis, in denticulum 
“') Species similar to H. Brownii Gray , but the shell is larger, thicker, 
less globose , with the incision as deep but much narrower and linear ; the 
produced columella is grooved with a broad shallow furrow, while in H. 
Brownii it has a deeply impressed line. — The form and size are inter- 
mediate between H. maxima and H. Brownii. (Adams 1. c.) 
T. depresso- ovata , pallide fusca, laevis, pellucida, supra convexa, 
subtus convexiuscula ; perist. incrassato , reflexo , albo ; columella labiisque 
subincrassatis , albidis , aperturae angulo columellari fisso ; operc. antice 
appendiculato, corneo. (Gray 1. c.) 
***) T. globosa, tenui, anfractu ultimo magno ; apertura semilunari ; 
labio externo reflexo , paululum expanso ; prope columellam incisura elon- 
gata ; labio interno prope columellam subcalloso ; columella obliqua, acuta. 
(Sow. 1. c.) 
