1923.] Zoological Results of Expedition to Yunnan. 395 
the penultimate whorl but considerably shorter than that whori 
and the seventh together. The base is strongly constricted from 
side to side, and provided with a blunt keel. It descends con- 
siderably and turns forwards Rae h expanding trumpet-wise 
and leaving a comparatively large oblique, oval umbilicus open. 
The mouth lies to the left of the middle line and is nearly ver- 
tical. It has an oval outline and is surrounded by a flattened 
and considerably expanded lip, oar is only interrupted by a 
narrow, oblique channel situated in the left upper corner but 
directed obliquely towards the fight, The channel as seen under 
the lens has aspout-like appearance. There is no internal arma- 
ture. The sculpture consists of fairly stout, conversely oblique 
lines, which are crossed by microscopic spiral impressed striae. 
On the body-whorl the former becomes coarser and almost assume 
the character of costae. There is a fine impressed spiral line 
chestnut. The rest of the shell is pale bluish grey sometimes 
tinged and blotched with chestnut. The peristome is cream- 
colour with a chestnut ring internally. 
The radula is very like that of B. scaler but the cusps 
of the teeth are longer and rather narrower and the ribbon 
as a whole is narrower. The central is “ different from 
eels but distinetly shorter than them. The formula is 
a6’ ae 
Type- specimen in the Z.S.I. (Indian Museum), M 1°11", 
Paratypes i in the British Museum. 
species is evidently related closely to Sturany’s! 
Serina cathaica vay. egressa, but the shell is still larger. has 
aw 
he differ 
ey. of Shells of New Species of Buliminus 
(= Ena). 
B. (Mirus) tigricolor, 
Height of shell .. 85mm. 
Max. diameter a mm. 
ong . Arras ca 
Max. d y 
mm 
B. (P . latilabrum. 
Height of shell .. 30 mm. 275mm. 265mm. 245 mm. 

Max. diameter _, 125mm. 115mm. 115mm. 10 _ mm. 
Height of mouth .. 115mm. 85mm. 85mm. 85mm. 
Max. diameter . 65mm. 65mm. 65mm. 5 mm. 
'Sturany, Denkschr. K. Akad. Wiss., LXX. p. 35, Plate III, 
Figs. 14- 16 (Vienna, 1901). 
