HELICINID &. 28] 
108. HELICINA AM@NA. 
Shell nearly semiglobose, rather solid, striated obliquely, and 
sculptured with distant impressed spiral lines, slightly shining, 
rose-coloured, varied with yellow or white; spire convex, slightly 
mucronate; whorls 52, scarcely convex, last keeled below the 
middle, flattened beneath ; aperture oblique, nearly triangular, 
yellow within ; columella short, marked with a slight perpen- 
dicular groove, angular at its lower extremity, dilated back- 
wards into a thin, diffused callus; peristome simple, with the 
upper margin broadly expanded, basal margin reflexed. Oper- 
culum rather thin, chestnut-coloured. Height 92, greatest 
breadth 15, least br. 122 mill. 
Helicina ameena, Pfr. in Proc. Z. S. 1848, p. 119; Lc. n. 73, p. 55, 
t. 8, f. 138-15 ; Pneum. Mon. p. 386. 
Helicina purpureo-flava, Morelet, Testac. Noviss. i. p. 19, n. 46. 
Hab. Honduras, and the provinces of Peten and Vera Paz 
(Morelet). 
109. HELICINA GONIOSTOMA. 
Shell subglobose, smooth, rather solid, dark brown, with a single 
broad white band along the suture ; spire somewhat depressed, 
conic ; aperture large, broad, angulated by the obtuse keel of 
the last whorl; labrum white, produced downwards. Height 
9, breadth 12 mill. (Sow.) 
Helicina goniostoma, Sowerby, in Zool. of Beech. Voy. p. 145, t. 38, 
f. 21; Pfr. Pneum. Mon. p. 387. 
Locality unknown. 
110. HELICINA LUTEA. 
Shell orbiculate, convex, solid, thick, minutely striated above, gold- 
yellow; spire somewhat elevated ; last whorl globose, slightly 
keeled on the periphery ; aperture oblique, semicircular, shining 
and white within ; columella white, sinuate ; peristome simple, 
free. Height 3, breadth 5’. (Less.) 
Helicina lutea, Less. Voy. Coquille, p. 350, t. 13, f. 10; Pfr. Pneum. 
Mon. p. 387. 
Hab. Port Dorey, New Guinea. 
111. Henicina ROTELLA. 
Shell small, smooth, angulated, scarcely keeled, with the outer lip 
very little spread, and the inner lip expanded; columella rather 
angulated. Height 7, breadth 11 mill. (Sow.) 
BB 2 
