SCHASICHEILA. 247 



Species 



1. Nicoleti Shuttl. (Coll. 194. — Mexico.) . . Pneum. II. p. 220. 1.^46. 



2. alata Menke. (CoU. 19.5. — Mexico.) ... - - - 221. 1547. 



3. ? panuucea Morelet. t (Guatemala.) ... - - - 221. 1548. 



4. f§cli. iiiinuscula Pfr. 1549. 



T. globoso-conica, tenuis, sublaevigata, nitida, pellucida, 

 fulva; spira conoidea, acutiuscula; anfr. 4 convexi, ultimus ven- 

 trosus, pone coluniellani excavatus, callosus ; apertura paruni 

 obliqua, seniiovalis ; perist. simplex, tenue, rectum, marginlbus 

 lamina callosa junctis, dextro superne inciso, tum arcuatim 

 procedente, columellari libero, substi'icto. — Operc. ? — Diam. 

 maj. 41/2, min. 32/3, alt. 3 mill. (Mus. Cuming.) 



Helicina minuscula {Schasicheila) Pfr. in Proc. Zool. Soc. 1859. p. 29. 



Habitat . . . ? 



5. §ch. Bahanieiisla Pfr. 1550. 



T. depressa, tenuiuscula, ruguloso-striata , sub epidermide 



decidua seriatim setigera rufescens ; spira vix elevata , vertice 



minuto; sutura impressa ; anfr. 4^ planiusculi, ultimus sub- 



depressus, subtus medio callo tenui munitus ; columella sim- 



plex, recedens, basi antrorsum In denticulum desinens; aper- 



tura fere diagonalis, subsemicircularis ; perist. simplex, rectum, 



margine dextro superne inciso, tum angulatim producto, basali 



juxta denticulum columellae sinuato. — Operc. typicum. — 



— Diam. maj. 6V2, niin. 52/3, alt. 3i;o mill. (CoII. Nr. 196.) 



Schasicheila minuscula ? Bland Geogr. distrib. landsh. W. India is- 



lands p. 25. (Ann. Lyc. New-York VII. p. 351.) 



— Bahamensis Pfr. in Malak. Bl. IX. 1862. p. 154. 



Habitat New-Providence insularum Bahamensium (Bland). 



Obs. Species testa depressa, fere planorboidea, a reliqnis generis cog- 

 nitis primo aspectu distinguenda. 



VI. Alcadia Gray. 



Pfr. Mon. Pneum. p. 404. Suppl. p. 222. 



