290 CATALOGUE OF PHANEROPNEUMONA. 
Helicina trochiformis, Sow. in Proc. Z. S. 1842, p. 7; Thes. n. 49: 
p. 10, t.2,'T. 90; Pfr. Ic. n. 79, "p. 69, t. 2, f.°12)%S: Prnewm. 
Mon. p. 397. 
Hab. The Philippine island of Negros (H. Cuming). 
136. HELicINA VIRIDIS. B. M. 
Shell depressed-ovate, angularly keeled, thin, polished, green, the 
keel whitish-yellow; spire convex, beneath rather convex ; 
peristome scarcely thickened, reflected, yellow, inner lip scarcely 
visible, very thin; base of the columella callous, white. Axis $, 
diameter 3} of an inch. (Gray.) 
Helicina viridis, Lam. Hist. vi. p. 103, n. 4, Ed. Désh. viii. p. 158; 
Gray, in Zool. Journ. i. p. 67, t. 6, f..7; Désh.in Eneyl. Méth. ii. 
p- 268, n.4; Delessert, Recueil, t. 27, f. 3; Reeve, Conch. Syst. 
¢..186, f.:8'; Sow. “Thes. 0,54)" p. “UT, 't. 2, f. 67 P77, ee 
p. 59, t. 9, f. 11 (from Gray); Pneum. Mon. p. 397. 
Pachytoma viridis, Swainson, Malacol. p. 337. 
.Hab. Haiti (Lamarck); Cuba (Sowerby). 
137. HELICINA TENIATA. 
Shell nearly discoidal, faintly striated, yellowish-white, with a 
single red band ; spire slightly raised, conoidal ; whorls 44, last 
very large, strongly keeled, very convex beneath; aperture 
semilunate, rather ovate; peristome simple, white, very slightly 
reflexed ; columella depressed, terminating in a small tooth. 
Breadth 42’". (Quoy.) 
Helicina teniata, Quoy & Gaim. Voy. Astrol. Zool. ii. p. 194, t. 12, 
f. 6-10; Désh. in Lam. Hist. viii. p. 159, n. 7; Sow. Thes. t. 2, 
f.49-51; Pfr. Ic. un. 85a, p. 63 (i. 19), t. A. f. 14 (from Quoy) ; 
Prneum. Mon. p. 398. 
8. Smaller; rather globular, with two or three red bands (Quoy & 
Gaim. t. 11, f. 34-38). 
Hob. The island of Vanikoro, the variety from Tonga. 
138. HELIcINA RHODOSTOMA. 
Shell depressed, rather thin, very minutely granulated and pune- 
tured, varied with rufous and whitish ; spire shortly conoidal, 
rather pointed; whorls 5, scarcely convex, enlarging rapidly, 
last sharply keeled, a little more convex beneath; aperture 
oblique, rather triangular; columella short, flat, dilated, spread- 
ing above into a thin callus, receding behind the axis with its 
lower extremity, and terminating in a sharp recurved spine ; 
peristome thin, angularly expanded, blood-red. Operculum 
solid, reddish. Height 8, greatest breadth 15, least br. 103 
mill. , 
