12 DAUDEBARDIA. 



posterior; pale horny, striated with growth-lines. Length of 

 aperture, 0-37 ; breadth, 0'22. 



Animal (in spirit) above slate-gray, gradually passing into 

 yellowish white on the sides ; sole yellowish white ; the sides 

 rather marbled with gray. 



New Zealand. 



Unfigured. The shell is said to resemble that of T. Maugei ; 

 also Daudebardia Novae-Zealandise, with which Prof. Hutton at 

 first confounded it, but the animal of the latter species he subse- 

 quently ascertained to be quite different. 



Unidentified and Doubtful Species. 



T. STABILEI, Pini. (Desc. not accessible to me.) Italy. 



T. PELETTI, Massot. (Desc. not accessible to me.) 



Vernet-les-Bains, E. Pyrenees. 



Genus DAUDEBARDIA, Hartmann, 1821. 



Section RUFINA, Clessin. 

 D. RUFA, Drap. PL 2, figs. 45-47. 



Shell perforate, depressed, transversely dilated, slightly striate, 

 very shining, corneous or rufous ; spire moderate, sublateral ; 

 whorls 3, the last (in adults) elongated, not angulated ; aperture 

 large, rounded oval. Length, 5*5 mill. 



Germany, Switzerland. 

 D. HASSIACA, Clessin. PI. 2, figs. 56, 57. 



Shell umbilicated, ovate, much depressed, thin, diaphanous, 

 fulvous, lightly striate ; whorls 3, rapidly increasing, with well- 

 impressed suture ; aperture oblique, rather small and narrow for 

 the genus. Length, 3*5 mill. 



Cassel. 



Smaller, with less dilated body-whorl, consequently smaller, 

 narrower aperture than D. rufa. 



D. HELDII, Clessin. PI. 2, figs. 73, 74. 



Openly umbilicated, suborbicular-oblong, smooth, incremental 

 striae slight, irregular, very pellucid, shining, golden-colored ; 

 whorls rapidly increasing, the last not dilated, suture well- 

 impressed. Length, 3'5 mill. 



Bavaria. 



Closely allied to the preceding species. 



