CHONDROPOMA §. 4. 
289 
Cyclostoma Newcombianum CTiemn. ed. II. N. 271. t. 37. f. 25. 26. 
— Troscheli Pfr. in Zeitschr. f. Mai. 1850. p. 64. 
— Swiftianum Newcomb mss. in Mus. Cuming. 
Chondropoma Newcombianum Pfr . Consp. N. 424. 
Habitat in insula St. Thomae Ind. Occident. ; nec in Jamaica 
(Adams). 
18. Cli.? turritum Pfr. 476 
T. subperforata, turrita, truncatula, lineis elevatis spira- 
libus et longitudinalibus regulariter clatbrata , albida , lineolis 
rufis interruptis cincta; sutura subprofunda, confertim denticu- 
lata; anfr. superst. 6 convexiusculi , regulariter accrescentes, 
ultimus 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. 
— — Chemn. ed. II. N. 313. t. 41. f. 1. 2. 
Chondropoma? turritum Pfr. Consp. N, 425. p. 69. 
Habitat Honduras (Dyson.) 
19. Cli. creiiulattim Ferussac. 477 
T. anguste perforata, oblongo-turrita , decollata, solidula, 
liris transversis elevatis costulisque longitudinalibus acutis, 
liras supercurrentibus sculpta, cinnamomea; sutura denticulis 
albis subdistantibus munita; anfr. superst. 4 convexi; apertura 
verticalis, ovalis; perist. rubellum, continuum, duplication, 
internum expansiusculum, appressum, externum breviter patens, 
juxta anfractum penultimum subinterruptum. Operc. normale. 
— Long. 11, diam. 5 mill. Ap. 4 [ / 2 mill* longa, 3‘V 3 lata. 
(Coll. Nr. 213.) 
Cyclostoma crenulatum Fer. Mus. 
— — Pot. et Mich. Gal. Douai I. 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 0,22 inch. (Adams 1. c. ) 
19 
