, 
1923.] Zoological Results of Expedition to Yunnan. 411 
Type-specimen. M 123° Z.S.1. (Ind. Mus.). 
Locality. Lake Tali (Erh- -hai), Yunnan. Apparently sub- 
sil. 
This species seems to be very closely allied to V. margar- 
yaeformis Mansuy,' found fossil in the dry lake-basin of Mong- 
tsu in Yunnan, but has the body whorl relatively broader and 
‘ the spire more distinct. Except for the smooth and polished 
surface of the shel] it would undoubtedly be regarded as a 
Margarya. 
Genus Margarya Nevill. 
aks Margarya, Nevill, Journ. Asiat. Soc. Bengal, XLVI (2), p 
909 
Margarya, Kobelt, oy aah (n.f.), Conch. Cab., p. is7, Plates 
XXXVII, XXXVII 
Margarya melanoides Nevill. 
1905. Margarya melanoides with varr. Delavayi, carinata, Francheti and 
nips 3 — Dautzenberg and Fischer, Journ. Conchyliol., LITl, 
425. 
pp. 4 
1918. j eel apnea 3 {in part), gigs a nek Serv. Geol. Indo- 
chine, II1, fase. 3, p. 2, sea “—. 6, 9. 
and 
drainage (7,500 pe Dautzenberg and Fischer record its 
Occurrence witn the succeeding species, but I am doubtful as 
to the identity of their specimens 
Type-specimen. 2286, Ind. ia 
Margarya monodi Dautz. and Fischer. 
1905. M 8 ots ee a. M oe. re rhe oe Dautzen- 
rg and Fischer, op. cit., pp. 423, 2 
1918. Margarya wa dered bait) Mansoy« op. cit., ts 2, Plate I, Figs. 
, Plate IT, Fig 
me ese forms seem ne me to be specifically distinct from 
M. melanoides. The shell is ornamented with regular, smooth, 
spiral ridges, which may be obsolete; the body-whorl is re- 
latively narrow and the spire much exserted and more or less 
cylindrical. 
The species occurs, living and fossil, in S.W. Yunnan. 
Genus Lecythoconcha Annandale. 
1920. Lecythoconcha, Annandale, Rec. Ind. Mus., XIX, p. 114. 
e genus is distinguished from Vivipara mainly by the 
structure of the mantle. The shells are large, thin, globose or 

. | Mansuy, Bull. Serv. Gzol. Indochine, III, fasc. III, p. 3, Plate I, 
yo aa Plate II, Figs. 1-3 (1918). This for m is possibly identical with 
‘Me i Crosse and Fischer f. elongata, oir and F . Jour 
Conchytiol. THT. p. 420, Plate X, Fig. 18 (1905) 
