CYLINDRELLA §. 9. 577 



I 

 Cylindrella gracillima Poey Mem. hist oat. Cubalt. i. 12. r 1—3. 



Habilat in insula Cuba (Poey). 



Obs. Affinis C. porrectae Gould et C. volubili Mor. (milii incognitae), 

 ab iitraque sculptura aiiisque characteribus diversa. 



72. C speluncae Pfr. •{■ 



T. gracillima, fusoidea, inlegra, corneo-flavescens, crebei- 

 rime costulata; anfr. 22 convexi, priores minute striati, ulti- 

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

 lura rotundo-subquadrangularis, basi subcanaliculata; perist. 

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

 diam. 3 mill. (Mor.) 



Cylindrella costiilata Morelet Test. . noviss. IL p. 12. N. 106. 

 Nec Adams. 

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



Habitat in parietibus speluncae Jobitsinal dictae, haud proeul 

 a metropoli Petenensium (Morelet). 



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



73. C. subtilis Morelet. 



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

 longitudinalibus, subdistantibus, vix elevatis sculpta, pallide 

 cornea; spira gracilis, acutissima, apice plerumque truncata; 

 sutura profunda, submarginata; anfr. 16 — 2i angusti, convexi, 

 ultimus solutus, oblique deorsum protractus, latere angulatus, 

 basi compresse carinatus; apertura subrotunda, latere dextro 

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

 expansum, circulare. — Long. ISy^ — 14, diam. infra medium 

 2V2 mill. Ap. vix 2 mill. longa et lata. (CoII Nr. 43.) 



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

 Habitat in sylvis provinciae Guatemalensis Peten. 



74. C. Gouldiana Pfr. 



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

 lato-striata, sericea, paliide 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. 2Y3 

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



Cylindrella Gouldiana Pfr. in Proc. Zool. Soc 185 0. 

 Habitat in insula Haiti (Salle). 



Obs. DifTert a C. subtili spira minus gracili, truncata, anfracfibus 

 latioribus, ultimo non carinato, etc. 



HL 37 



