298 CATALOGUE OF PHANEROPNEUMONA. 
5. ALCADIA GossEI. 
Shell depressed-globose, somewhat rugged by series of pustules, 
slightly shining, fuscous-reddish; spire convex; whorls 42, 
somewhat convex, last rounded; aperture semiovate, rather 
triangular, flesh-coloured, shining within; columella truncated 
at its lower extremity, dilated backwards into a thick, flesh- 
coloured callus; peristome somewhat thickened, expanded, with 
a very slight slit near the columella. Height 134, greatest 
breadth 19, least br. 155 mill. 
Helicina Gossei, Pfr. in Proc. Z. S. 1848, p. 122; Jc. n. 29, p. 28, 
t. 6, f. 11, 12. 
Alcadia Gossei, Pfr. Pneum. Mon. p. 407. 
Hab. Jamaica (Gosse). 
6. ALCADIA PALLIATA. 
Shell globose-conoidal, solid, fuscous-reddish, covered with a closely 
short-haired periostraca; spire conoidal, rather pointed ; whorls 
53, scarcely convex, last deflected anteriorly ; aperture diagonal, 
semiovate, rather triangular; columella short, terminating for- 
wards in a curved tooth, dilated backwards into a semicircular 
callus, which is thick and orange-coloured on the centre; peri- 
stome somewhat thickened, expanded, flesh-coloured, separated 
from the columella by a deep, narrow, rather rectilinear slit. 
Operculum solid, opaline. Height 113, greatest breadth 153, 
least br. 13 mill. 
Helicina palliata, Adams, Contrib. to Conchol. n. i. p. 18. 
Alcadia palliata, Pfr. Pneum. Mon. p. 407. 
B. Labiosa (Adams, Contrib. n. 8, p. 134) ; with the peristome ex- 
cessively thickened both externally and internally, contracting 
the aperture. 
Hab. Jamaica. 
7. AucaprA Browntit. B. M. 
Shell depressed-conoidal, rather thin, faintly striated, slightly 
shining, diaphanous, fuscous or yellow, spire broadly conoidal, 
rather pointed; whorls about 5, scarcely convex, last a little 
descending anteriorly, rather flattened beneath; aperture ob- 
lique, semiovate, rather triangular ; columella short, terminating 
forwards in a curved tooth, dilated backwards into a semi- 
circular callus, which is thick and white on the centre; peri- 
stome white, somewhat thickened, expanded, separated from 
the columella by a deep, rather broad, curved slit. Operculum 
rather horny. Height 9, greatest breadth 13, least br. 113 mill. 
