1923. } Zoological Results of Kkapedition to Yunnan. 36} 
shell in the same condition from Shangkuan near the N.W. 
shore of Erh-hai (Lake Tali) (altitude, 7,000 feet), taken in earth 
with many lacustrine forms. The shell, which is completely 
decolourised. agrees fairly well with Mélendorft’s figures in 
outlines and precisely in dimensions. It is perhaps very 
slightiy more conoidal and has the peristoma! tubercle less 
well-developed. 
; species was described from the province of Kansu. 
between Yu-lin-quan and Wen-hsien. 
14. Buliminus (Pupinidius) chrysalis, sp. nov. 
(Plate 16, Figs. 4, 4a). 
A large series of shells with the dried animals was obtained in 
the gorge above Yangtsa in the Mekong valley between 7,000 and 7,500 
feet in July, on granite, in somewhat arid conditions. 
_ The shell has six whorls and is dextral and of a large 
size, but thin and light. The protoconch is broad and helici- 
form, but the rest of the shell from the fourth whorl 
downwards is broadly cylindrical. The apex is acuminate. 
The first three whorls increase in breadth very rapidly, the 
fourth is much narrower above than below, but the rest of the 
shell has an almost uniform breadth The fifth whorl is more 
umbilicus is deeply rimate and very oblique at its opening. 
the mouth is large, ovate, obliquely pointed above. with 
its main axis forming an obtuse angle with that of the 
shell. The peristome is complete and without armature. 
The lip is hardly at all expanded and very narrowly everted. 
The surface has a dull lustre. The sculpture consists of 
Sometimes, 
is hardly at all differentiated from the inner laterals either 
in size or in outline. There is no trace in these teeth of lateral 
including the central in the middle. 
these an internal lateral cusp makes 
