100 
CHOANOPOMA §. 1. 
— Operc. tenue, cartilagineum , lamelloso-spiratum , lamellis 
exstantibus, interdum testaceo-incrassatis, nucleo subcentrali. — 
Long. 17 1 / 2 , diam. 8 mill. Ap. fere 6 mill, longa, 5 lata. 
(Coll. Nr.' 157.) 
Cyclostoma senticosum (Choanopoma) Shuttl. Diagn. n. Moll. Nr. 7. 
p. 150. 
Habitat prope Luquillo insulae Portorico, frequentius in in- 
sula Vieque (Blauner). 
Obs. Differt a praecedente sculptura eximie asperata , increment! ra- 
tione, etc. 
4. Cl*. perplieatuna GtundlaeK. 
T. vix subperforata, ovato-turrita , truncata, solida, liris 
fortibus circumdata et striis confertis filiformibus, illas trans- 
gredientibus sculpta , opaca , unicolor isabellina ; spira sub- 
regulariter attenuata, late truncata; sutura profunda, fascicu- 
lato-crenata ; anfr. superst. 4— 4V 2 convexi, ultimus antice vix 
solutus ; apertura verticalis , ovalis ; perist. subduplex : inter- 
num continuum, adnatum, externum breviter expansum, superne 
angulatim productum, ad anfr. contiguum excisum. — Operc. 
norm. — Long. 11 , diam. 5(/ 2 mill. Ap. mill, longa, 
3 lata. (Coll. Nr. 158.) 
Cyclostoma perplicafum Gundl, in Malak. Bl. IV. 1857. p. 177. 
Habitat prope Cabo de Cruz insulae Cubae. 
5. CIi. ApangiagiuiM Gtiaidlacli. 
T. perforata, ovato-turrita, truncata, tenuis, liris sub- 
remotis et costulis confertis illas acute transgredientibus sculpta, 
haud nitens, fulvida, fusco variegata et seriatim maculata; 
spira regulariter attenuata, sublate truncata; sutura irregula- 
riter et subremote crenafa; anfr. superst. 4 convexi, ultimus 
latior , antice non solutus, basi distinctius liratus; apertura 
verticalis, fere circularis, superne obsolete angulata; perist. 
duplex: internum vix prominulum , externum subaequaliter 
patens, concentrice striatum, fusco-radiatum , latere sinistro 
undulatum , superne in auriculam mediocrem productum. — 
Operc. paucispirum, nucleo fere centrali , anfractibus lamina 
elevata munitis. — Long. 12, diam. 5 l / 2 mill. Ap. 4 mill, 
longa. (Coll. Nr. 159.) 
Cyclostoma Aranyianum Gundl. in Malak. Bl. IV. 1857. p. 177. 
Habitat Jiicaro prope Cabo de Cruz insulae Cubae. 
