100 CHOANOPOMA §. 1. 



— Operc. tenue, cartilagineum , lamelloso-spiratum , lamellis 

 exstantibus, interdum testaceo-incrassatis, nucleo subcentrali. — 

 Lono;. 17\/, , diam. 8 mill. Ap. fere 6 mill. longa, 5 lata. 

 (ColT. Nr. 157.) 



Cyclosloma senticosum ( Choanopoma) Slnittl. Diagn. n. Moll. Nr. 7. 

 p. 1 50. 



Habitat prope Luquillo insulae Portorico, frequentius iu in- 

 sula Vieque (Blauner). 



Obs. Difleit a praecedente sculptura eximie aspcrata , inerenienti ra- 

 tione, etc. 



4. Cli. |>eB*|ilicaiuBBa OsBa&dlaeli. 



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 ; anir. superst. 4 — -^i/a convexi, ultinuis antice vix 

 solutus ; apertura verticalis , ovalis ; perist. subduplex : inter- 

 num continuum, adnatum, externum breviter expansum, superne 

 angulatim productum, ad antr. contiguum excisum. — Operc. 

 norm. — Long. 11, diam. 5^'., mill. Ap. 3^2 y^vW. longa, 

 3 lata. (Coll. Nr. 158.) 



Cyclostoma perplicatum Gundl. iu Malak. Bl. IV. 1857. p. 177. 

 Habitat prope Cabo de Cruz insulae Cubae. 



5. Cli. AraiijBciaBiuiii Ciusiillacli- 



T. perforata , ovato-turrita , truncata , tenuis , Jiris sub- 

 remotis et costulis confei-tis illas acute transgredientibus sculpta, 

 haud nitens, fulvida, fusco variegata et seriatim maculata ; 

 spira regulariter attenuata, sublate truncata; sutura irregula- 

 riter et subremote crena*a; 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'/o mill. Ap. 4 mill. 

 longa. (Coll. Nr. 159.) 



Cyclosloma Arangianum Gundl. in Malak. Bl. IV. 1857. p. 177. 

 Habitat Jucaro prope Cabo de Cruz insulae Cubae. 



