CHONDROPOMA 8. 4. 989 
Cyclostoma Nemcombianum Chemn. ed. II. N, 271. t. 37. f. 25, 26. 
x Troscheli Pfr. in Zeitschr. f. Mal. 1850. p. 64. 
-— Smifftianum Newcomb mss. in Mus. Cuming. 
Chondropoma Nemcombianum Pfr. Consp. N. 424. 
Habitat in insula St. Thomae Ind. occident.; nec in Jamaica 
(Adams). 
18. €h.? turritum Pfi. 476 
T. subperforata, turrita, truncatula, lineis elevatis spira- 
libus et longitudinalibus regulariter clathrata, albida, lineolis 
rufis interruptis cincta; sutura subprofunda, confertim denticu- 
lata; anfr. superst. 6 convexiusculi, regulariter accrescentes, 
ultümus rotundatus, basi liris validis spiralibus munitus; aper- 
tura verticalis, ovalis, intus fulvida; perist. subduplex : internum 
continuum, expansiusculum, externum superne angulato-dilata- 
tum, margine dextro vix patens, columellari et sinistro exci- 
sum, —  Operc.? — Long. 16, diam. 7:mill Ap. 5 mill. 
longa, 4 lata. (Mus.. Cuming.) 
Cyclostoma turritum Pfr. in Proc. Zool. Soc. 1851. Jul. 
I — Chemn.: ed.-YE. N.-313. t. 41. f. 1. 9. 
Chondropoma? turritum.Pfr. Consp. N. 425. p. 69. 
Habitat Honduras (Dyson.) 
19. €h. eremulatium Férussae, — — 4T 
"T. anguste perforata, oblongo-turrita, decollata, solidula, 
liris transversis. elevatis costulisque longitudinalibus acutis, 
liras supercurrentibus sculpta, cinmnamomea; sutura denticulis 
albis subdistantibus munita; anfr. superst. 4 convexi; apertura 
verticalis, ovalis; perist. rubellum, continuum, duplicatum, 
internum expansiusculum, appressum, externum breviter patens, 
juxta anfraetum penultümum subinterruptum. Operc. normale. 
— Long. 11, diam. 5 mill. Ap. 4'/, mill longa, 3*/, lata. 
(Coll. Nr. 213.) 
Cyclostoma crenulatum Fér. Mus. 
- -— Pot. et Mich. Gal. Douail. p. 235. t. 24. f. 3. 4. 
— — Petit in Journ. Conch. 1850. I, p. 47. 
— guadeloupense Pfr. in. Chemn. ed. II, N. 193. p. 176. t. 28. 
f. 9—11, 
moderately produced above into a sharply angular concave wing; umbilicus 
very small. — Mean divergence 37?; length 0,52; greatest breadth 0,28; 
least breadth 0,29 inch. (Adams 1. c.) 
19 
