200 CATALOGUE OF PHANEROPNEUMONA. 
yellowish, painted with chestnut-coloured spots, which are ar- 
ranged into bands; suture closely and slightly crenulated by 
the upper ends of the plaits; whorls remaining 5, moderately 
convex, last rounded beneath, shortly detached anteriorly, keeled 
above; aperture rather perpendicular, ovate, slightly angulated 
above; peristome free, simple, scarcely expanded all round. 
Operculum like that of Ch. plicatulum. Length 15, breadth 7$ 
mill. 
Cyclostoma Cumanense, Pfr. in Proc. Z. S. 1851; Je. n. 320, t. 41, 
lo. £9, 
Chondropoma Cumanense, Pfr. Consp. n. 417, p. 68; Pnewm. Mon. 
p. 282. 
Hab. Cumana (Dyson). 
9. CHONDROPOMA? VESPERTINUM. 
Shell umbilicated, oblong-conic, often truncate, thin, decussated 
with minute striz of growth and fine spiral ribs, rufous or 
whitish-fulvous, irregularly painted with punctiform or not in- 
terrupted bands ; suture slightly crenulated, channelled at the 
lower part; whorls 7, convex, the last somewhat ventricose, very 
shortly detached; aperture angularly ovate, shining and mi- 
nutely banded within; peristome free, simple, with the margins 
imperceptibly expanded. Length 21, breadth 9 mill. 
Cyclostoma vespertinum, Morelet, Test. Noviss. ii. p. 19, n. 128. 
Chondropoma? vespertinum, Pfr. Mon. Pnewm. p. 418, n. 466a. 
Hab. Palenque, near Chiapa. 
This shell differs from C. Sagra (Orb.) by its more eminent 
sculpture, crenulated suture, peristome thin, not reflected, &e. 
10. CHONDROPOMA ELONGATUM. B. M. 
Shell subperforate, oblong-turreted, broadly truncate, rather solid, 
closely girdled with very subtle thread-like striz, somewhat 
shining, fulvous ; suture deep; whorls remaining 3}—4, moderately 
convex, last rounded; aperture rather perpendicular, obliquely 
ovate, angulated above; peristome continuous, shortly affixed, 
scarcely a little expanded, with the left margin indistinctly 
doubled, spreading narrowly. Length 114, breadth 6 mill. 
Turbo elongatus, Wood, Ind. Suppl. t. 6, f. 10. 
Cyclostoma elongatum, Gray, in Wood Suppl. p.36; Sow. Thes. 
n. 50, p. 107, t. 24, f. 64. 
Cistula elongata, Gray, Cat. Cycloph. p. 60, n. 14. 
Chondropoma elongatum, Pfr. Consp. n. 418; Pnewm. Mon. p. 282. 
