CYLINDRELLA §. 9. 577 



Cylindrella yracillima Poey Mem. hist uat. Cuba IL t. 12. f. 1—3. 

 ilabitat in insula Cuba (Poey). 



Obs. Affinis C. porrectae Gould et C. voliibili Mor. (mihi incognitae), 

 ab utraqiie sculptura aUisque characteribus diversa. 



72. C. speluncae Pfr. •{• 



T. gracillima, fusoidea, iutegra, corneo-flavescens, creber- 

 rime costulata; anfr. 2^ convexi, priores minute striati, uiti- 

 mus antice solutus, breviter protractus, creno-carinatus; aper- 

 tura rotundo-subquadrangularis, basi subcanaliculata; perist. 

 album, subincrassatum, iiitens, expansiusculum. — Long. 16, 

 diam. 3 miil. (Mor.) 



Cylindrella costidata Morelet Test. noviss. II. p. 12. N. 106. 

 Nec Adams. 

 — speluncae Pfr. in Zeitschr. f. Malak. 1852. p. 151. 



Habitat in parietibus speluncae Jobitsinal dictae, haud procul 

 a metropoli Petenensium (Morelet). 



Obs. «Differt a C. Morini sculptura et peristomate crassiore.» 



73. C subtilis rHorelet. 



T. non rimata, subfusiformi-turrita, gracillima, tenuis, striis 

 longitudinalibus , subdistantibus, vix elevatis sculpta, pallide 

 cornea; spira gracilis, acutissima, apice plerumque truncata; 

 sutura profunda, submarginata; anfr. 16 — 21 angusti, convexi, 

 ultimus solutus, oblique deorsum protractus, latere angulatus, 

 basi compresse carinatus; apertura subrotunda, latere dextro 

 et basi canaliculata; perist. continuum, tenue, undique breviter 

 expansura, circulare. — Long. I^y^ — 14, diam. infra medinm 

 •2V2 miH- Ap. vix 2 miU. longa et lata. (Coll Nr. 43.) 



Cylindrella subtilis Morelet Test. noviss. I. p. 11. N. 16. 

 Habitat in sylvis provinciae Guatemalensis Peten. 



74. C. Gouldiana Pfr. 



T. vix subrimata, turrita, truncata, confertissime costu- 

 lato-striata, sericea, pallide cornea; sutura impressa, subden- 

 ticulata; anfr. superst. 9 convexiusculi, ultimus solutus, an- 

 trorsum breviter descendens, basi subcompressus; apertura 

 subobliqua, fere circularis, latere dextro subangulata; perist. 

 album, undique breviter expansum. — Long. 10, diam. 2^3 

 mill. Ap. 2 mill. longa et lata. (Mus. Cuming.) 



Cylindrella Gouldiana Pfr. in Proc. Zool. Soc. 1850. 

 Habitat in insula Haiti (Salle). 



Obs. Differt a C. subtili spira minus giacili, truncata, anfractihus 

 latioribus, ultirno non carinato, etc. 



IIL 37 



