208 CATALOGUE OF PHANEROPNEUMONA. 
27. CHONDROPOMA INTEGRUM. 
Shell perforate, turreted, rather thin, slightly decussated by in- 
distinct raised spiral lines and crowded slight longitudinal ribs, 
each fourth or fifth of which appears stronger, fulvous, with inter- 
rupted reddish-brown bands ; spire regularly turreted, with the 
apex not truncate, rather blunt ; suture rather crowdedly den- 
ticulated; whorls 7, convex, the upper two smooth, the last 
one rounded, shortly detached anteriorly, scarcely descending, 
rounded beneath and marked with 2-3 continuous brown bands; 
aperture scarcely oblique, ovate; peristome rather double ; 
inner edge continuous, affixed; outer edge spreading, somewhat 
angularly dilated above, undulated on the columellar margin. 
Operculum typical. Length 12, breadth 5 mill. 
Cyclostoma integrum, Pfr. in Proc. Z. S. 1851; Ic. n. 382, t. 38, 
f. 25, 26. 
Chondropoma integrum, Pfr. Consp. n. 432, p. 70; Pneum. Mon. 
p. 292. 
Hab. West Indies. 
28, CHONDROPOMA TRUNCATUM. 
Shell subperforate, conic-turreted, for the most part truncate, 
elegantly decussated, yellowish with reddish-brown points ; 
suture slightly crenulated; remaining whorls 5; aperture ovate- 
roundish ; peristome detached, reflexed, double. Operculum 
cartilaginous. Height 6-8, breadth 3-5”. 
Cyclostoma truncatum, Wiegm. in Mus. Berol.; Rossm. Ic. vi. p. 49, 
t. 28, f. 397. 
Chondropoma truncatum, Pfr. Consp.n. 433; Pneum. Mon. p. 293. 
Hab. Mexico. 
29. CHonNDROPOMA ? DELATREANUM. 
Shell elongated, thick, imperforate, fulvous, girdled with fuscous 
bands, ribbed longitudinally and crossed by regular transverse 
striz ; spire elongated, conic, truncate when adult; suture 
strongly crenulate ; remaining whorls 5; aperture ovate ; peri- 
stome dilated, reflexed. Operculum ovate, smooth externally. 
Length 14, breadth 5 mill. 
Cyclostoma Delatreana, Orb. Moll. Cub. i. p. 262, t. 22, f. 18-20. 
Cyclostoma Dutertreanum (Orb.), Petit, Jowrn. Conch. 1850, i. 
p. 47. 
Cistula Delatreana, Gray, Cat. Cycl. p. 59, n. 8. 
Chondropoma? Delatreanum, Pfr. Consp. n. 434; Pnewm. Mon. 
p. 293. 
Hab. Cerro de Cuzco (Délatre). 
