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Synopsis of the Genus Achatinella. 317 



A critical examination of Swainson's description and figure 

 satisfied me that Mr. Keeve had given a wrong shell for that 

 species, and an examination of the type in Mus. Cuming con- 

 firmed me in this opinion. A. bilineata Reeve comes next in 

 order, and although not strictly characteristic, the name should 

 be retained. 



39. A. afoforeviata Reeve. Mon. pi. 3, fig. 19. 



" nivosa Newc. " Manufactured," Zool. Proc. pi. 12, fig. G. 1853. 

 « Clementina Pfr. Zool. Proc. 1855, p. 205. 



Animal, light grey, covered above with numerous granula- 

 tions of a dark slate ; mantle, a dirty yellow ; tentacles but 

 slightly clubbed ; when extended, nearly as long as the shell. 



A. Clementina Pfr. is in Mus. Cuming, a short but old A. ab- 

 breviates. 



A. nivosa is a fully developed shell, with the epidermis 

 removed so skilfully as to escape detection at the time it was 

 described. 



40. A. castanea Reeve. Mon. pi. 3, fig. 24. 



41. A. olivacea Reeve. Mon. pi. 3, fig. 20. 



" prasinus Reeve. Mon. pi. 4, fig. 27. 



42. A. adusta Reeve. Mon. pi. 4, fig. 30. 



43. A. perdix Reeve. Mon. pi. 6, fig. 43. 



" pyramidalis Gul. Ann. Lye. 1. c. pi. 7, fig. 32. 

 " undosa Gul. " " " pi. 1, fig. 33. 



Animal, bluish white ; upper tentacles and sheath slate 

 colored ; basal margin of foot bordered with light slate ; bot- 

 tom of foot and mantle greenish white ; when extended, not 

 longer than the shell. 



