154 
CHOANOPOMA. 
XVII. Choanopoma Pfr. 
Operculum testaceum , subcirculare , anfractibus sensim 
accrescentibus, margine exferno libero, acuto, saepe in lam el- 
lam altam elevato, nucleo subexcentrico. Testa globoso-tur- 
binata vel turrita, saepe truncata; apertura subovalis vel cir- 
cularis ; perist. plerumque duplex , limbo externo angulatim 
patente. 
Choanopoma Pfr. in Zeitschr. f. Malak. 1847. p. 47. 107; 1851. p. 153; 
Consp. p. 25. 
— Gray Catal. Cycloph. p 48. (ex parte.) 
Licina /? Gray Syn. Brit Mus. 1842. p. 91. et Proc. Zool. Soc. 1847. 
p. 181. 
Cyclostoma (spec.) Auctt . 
Conspectus specierum. 
A. Oblonga vel ovato-conica . . . §. 1. Nr. 1 — 5. 
B. Globoso-conica. 
1. Margine peristomatis undulato . §. 2. — 6 — 14. 
2. Margine peristomatis piano . . §.3. — 15 — 17. 
C. Depressa §.4. — 18 — 21. 
§• 1 . 
261 1. Cli. mactum Poey. 
T. subperforata, oblonga, truncata, solida, lineis elevatis 
longitudinalibus et transversis minute reticulata, violaceo-fusca ; 
sutura eleganter albo - denticulata ; anfr. superst. 3 convexi, 
ultimus rotundatus; apertura subverticalis, fere circularis, intus 
livida; perist. incrassatum, continuum, breviter adnatum, su- 
perne angulatim ascendens, margine dextro superne recedente, 
repando , infra medium antrorsum producto , columellari dila- 
tato, patente. — Operc. intus corneum , cartilagineum , extus 
calcareum, lamellis elevatis infundibuliformibus spiratum. — 
Long. 26, diam. 15 mill. Ap. intus 9 mill, longa, 8'/. 2 lata. 
(Coll. Nr. 110.) 
Cyclostoma mactum Poey Mem. hist. nat. Cuba I. t. 8. f. 6 — 12. 
— — Ckemn. ed. II. N. 251. t. 36. f. 1. 2. 
— majusculum Morelet mss. 
Choanopoma majusculum Pfr. Consp. N. 223. p. 59. 
Habitat in insula Cuba. 
Obs. Huic sectioni species quatuor in genere Licina descriptas adnume- 
randas esse suspicor. 
