186 CATALOGUE OF PHANEROPNEUMONA. 
9. CISTULA PALLIDA. 
Shell perforate, ovate-turreted, truncate, thin, pale horn-coloured, 
obsoletely painted with interrupted reddish-brown lines, mi- 
nutely decussated by raised spiral and very crowded longitu- 
dinal strive, which are sometimes irregular and rather confluent ; 
suture deep, rather simple; whorls remaining 4—43, convex, 
last rounded; aperture perpendicular, ovate-roundish; peri- 
stome double; inner edge white, prominent, slightly expanded, 
outer edge dilated, spreading horizontally, striated concentri- 
cally, shortly affixed to the penultimate whorl, narrower on the 
left side. Operculum like that of C. catenata, more distinctly 
striated obliquely. Length 173, breadth 82 mill. 
Cyclostoma pallidum, Pfr. in Proc. Z. 8.1851; Je. n. 314, t. 41, 
f. 3, 4. 
Cistula pallida, Pfr. Consp. n. 388, p. 66; Pnewm. Mon. p. 265. 
8. Smaller; not truncated, with 7 whorls; length 18, breadth 8 
mill. (Pfr. Ic. t. 41, f. 5, 6.) 
Hab. Almendares, near Havana (Morelet). 
10. CistunaA? Kuster. 
Shell perforate, ovate-turreted, truncate, thin, regularly and gra- 
nularly trellised by spiral grooves and crowded longitudinal 
ribs, rather coarse, scarcely shining, diaphanous, fuscous-horn- 
coloured, painted with indistinct, interrupted, reddish-brown 
lines; spire convexly turreted, truncate broadly; suture deep, 
simple ; whorls remaining 4, convex, the last narrower, rounded ; 
aperture rather perpendicular, nearly circular; peristome dou- 
ble; inner edge shortly expanded, affixed; outer edge bell- 
shaped, expanded, striated concentrically, concave and marked 
with reddish-brown rays anteriorly, angulated above, narrower 
on the penultimate whorl. Operculum! Length 14, breadth 7 
mill. 
Cyclostoma Kisteri, Pfr. in Proc. Z. 8.1851; Jc. n. 316, t. 41, 
f,:9, 10. 
Cistula ? Kisteri, Pfr. Consp. n. 389, p. 66; Pneuwm. Mon. p. 265. 
Hab. Honduras (Mr. Dyson). 
11. CIstTULA RADULA. 
Shell perforate, ovate-oblong, truncate, thin, minutely and coarsely 
decussated by raised spiral striz and sharp longitudinal ribs, 
not shining, pale horn-coloured, with narrow, interrupted, red- 
dish-brown bands; spire tapering towards the summit, truncate 
broadly ; suture deep, rather simple; whorls remaining 4, con- 
vex, the last one narrower, rounded; aperture perpendicular, 
nearly circular; peristome double; inner edge continuous, 
scarcely prominent; outer edge dilated, spreading horizontally, 
