641 a. Helicina chrysocheila Shuttleworih. f 



„T. depresse subgloboso-conica, «olidula, tenuissime 

 striatula , lineisque 3 — 4 iinpressid öpiralibus remote cir- 

 cumdata , flavescenti-albida, niddiuscula ; spira elata, conica ; 

 anfr. o^/j vix convexiusculi , ultimus sensim de^cendens, 

 basi planulatus; apertura valde obliqua, subtriangularis ; 

 columella simplex; periöt. valde calloso-incrassatiim, niti- 

 dissimum, modice expansum , aiirantiacuni , margiue supero 

 stricto, columellarl subito in callo crasso late efFuso, satu- 

 rate aurantiaco, nitidissimo transeunte. — Operc. pallidum, 

 corneuui. — Diam. maj. 9, min. 8, alt. tJ'/g mill. (Sh.) 



Helicina chrysocheila Shuttl. in Bern. Mittheil. 1852. 

 p. 303. Diagn. n. Moll. Nr. 3. p. 48. 



Habitat Cordova, Vera Cruz (Jacot-Guillarmod). 



Obs. „Specimen unicum adest, H. Campanula Pfr, 

 forsan consocium." 



644 a. Helicina riparia Pfr. 



T. conica, tenuiuscula, oblique striatula, alba; spira 

 conoidea, acutiuscula; anfr. b^j^ convexiusculi, sensim ac- 

 crescentes, ultimus spira brevior, basi subconvexus; colu- 

 mella a basi rectangule descendens, breviter recedens, 

 callum emittens tenuem, circumscriptum ; apertura vix ob- 

 liqua, fere semicircularis ; perist. simplex, undique breviter 

 expansum. — Operc? — Diam. maj. 7, min. 6^/4, alt. 

 5 mill. 



Helicina riparia Pfr. in Proc. Zool. Soc. 1853. 



Habitat prope Calamar in ripa fluvii Magdalenae, Novae 

 Granadae. 



644 h. Helicina globulosa Orhigny. 



T. globoso-conica , solidula, sublaevigata, alba, fasciis 

 dissolutis rubro-fuscis taeniata; spira convexo-conica , sub- 

 mucronata; anfr. fere 6 convexiusculi, ultimus spii'a paulo 

 brevior , rotundatus , peripheria obsolete subangulatus ; aper- 

 tura obliqua, integra, subseniicircularis , intus rufa; colu- 

 mella brevis, antrorsum subdentata, callum emittens tenuis- 



