570 CYLINDRELLA §. 5. 



28. Humboldtiana Pfr. (Coll. 17. — Gongylostoma 



Alb. p. 208.). Mon. 11. p. 373. 



29. C. columna Adams. 



T. breviter rimata, oblongo-cylindracea , truncata, tenuis, 

 capillaceo-striata, sericea, albido-cornea; spira elongata, supra 

 niediiim ventrosior; anfr. superst. 9 planiusculi, ultimus non 

 protractus, supra basin filo-carinatus; apertura verticalis, sub- 

 circularis; perist. continuum, tenue, superne subappressum, 

 caeterum subcampanulato-expansum. — Long. 18, diam. 4% 

 milL Ap. 5^2 milL longa et lata. (iMus. Cuming.) 



Cylindrella columna Adams Contfib. to Conch, N. 2. p. 22. 

 p. Testa magis elongata , aiifractibus conve.xiusculis. (Coll. Nr. 18.) 



Cylindrella columna var. intermedia Adams ibid. p. 22. 

 Habitat in insula Jamaica. 



30. C. HoUandi Adams. •{• 



T. gracilis, subcylindrica, superne attenuata, confertini 

 striata, cerea; apex late truncatus; anfr. superst. 10 subplanu- 

 lati, ultimus subcarinatus; apertura valde protracta, trapezio- 

 orbicularis, subcanaliculata ; perist. expansum, reflexiusculum. 

 — Long. 0,82; lat. 0,18 poll. (Ad.) 



CylindreUa Hollandi Adams Contrib. to Conch. N. 5. p. 82. 

 Habitat in insula Jamaica. 



31. roseaPfr. (Coll. 19. — Gongylostoma j;&. p. 208.) Mon. II. p. 374. 

 p. Minor: long. 14 '/2, diam. 4 mill. (Mus. Cuming. ) 



Cylindrella montana Adams Contr. to Conch. N. 2, p. 20. 

 * 

 32. C. Gravesii Adams. 



T. subrimata, fusiformi-cylindrica, truncata, confertissime 

 et oblique costulato-striata , sericea, albida; spira supra medium 

 sensim attenuata; anfr. superst. 8 vix convexiusculi, ultimus 

 horizontaliter et breviter protractus, basi rotundatus; apertura 

 obliqua, obsolete subquadrangularis; perist. album, nitidum, 

 late reflexiusculo-expansum. — Long. 14, diarri. medio 5 mill. 

 (Mus. Cuming.) 



Cylindrella Gravesii Adams Contr. to Conch. N. 2. p. 21. 

 Habitat in insula Jamaica. 



33. C. Salleana Pfr. 



T. iion rimata, cylindracea, gracilis, truncata , oblique 

 confertissime costulato-striata, nitida, rufo-fusca vel pallide ru- 



