206 BOYSIDIA. 



A single specimen of this very interesting species was found 

 together with Georissa liratula, Diplommatina crispata and 

 carneola, etc., on the limestone lull at Damotha. It is the 

 third known species of the genus. In general form it re- 

 sembles Blanford's H. bensonianum from near Ava, but differs 

 in the shape of the last whorl and in the dentition of the aper- 

 ture. The latter is in both species almost vertical, not turned 

 entirely upwards, as in the type of the genus, H. tubiferum. 

 As regards form, the present species indicates still more dis- 

 tinctly the affinities of Hypselostoma to Pupa than does H. 

 bensonianum ( Stol. ) . 



So far as I can learn, only the original specimen has been 

 found. It is placed here on account of the adnate upper mar- 

 gin of the peristome, but it may perhaps belong to Gyliauchen. 



11. BOYSIDIA HUPEANA (Gredler). 



Scarcely differing in size from the smaller form of Hypse- 

 lostoma hunanum, but less turrited, more conic. Also the two 

 folds of the parietal wall are not placed one behind the other, 

 and, except for a depression or saddle, concrescent into one, 

 as in hunanum, but standing wholly free alongside one an- 

 other, as in strophostoma Mlldff. From this, however, the 

 folds referred to are diverse, in that the larger apertural fold 

 emerges to the margin, and is higher and sharper. The chief 

 differential character of this species lies in the callous impres- 

 sion of the outer lip, running along the outside (a la Vertigo 

 antivertigo of Europe), corresponding to a sharp, elevated 

 palatal lamella running deep within, reaching up near to the 

 fold on the parietal wall. Alt. 3, breadth 2 mm. (Gredler). 



China: southwestern Hupe. 



Hypselostoma hupeanum GREDLER, Nachrichtsblatt d. deut- 

 schen Malak. Ges., vol. 33, Oct. 1901, p. 151. 



In the absence of details of structure of the columellar 

 lamella, etc., the position of this species remains uncertain. 



12. BOYSIDIA SALWINIANA (Theobald). PI. 33, fig. 11. 



Shell pyramidal, rimate, brown-corneous, covered with a 

 smooth epidermis ; whorls 6, a little convex, joined by an im- 

 pressed suture, the last shortly ascending at the aperture. 



