1923.] Zoological Resulis of Expedition to Yunnan. 415 
From the true L. chinensis they evidently differ in their acumin- 
I ave 00d w series before me) mad the ey “have not the siialute 
body-whorl of the larger Japanese forms 
Lectotype, 2332, Ind. Mus. 
Lecythoconcha malieata (Reeve). 
(Plate 17, Fig. 9.) 
1864. Paludina malleata, Reeve, Paludina, Conch. Icon. X1V, Plate V, 
Fi 
1909. Pivipara ree. Kobelt, Paludina, Conch. es (n.f.), p. 104, 
Plate XVII, Figs. 8-13 (not Plate XV, Figs. 
is a aadioh more constant species ae ae other two 
eciekad here and its wide geographical range exhibits little 
variation except in sculpture. Its range extends from the upper 
Yangtse to Japan. I have examined large series from both 
countries. 
The shell is always comparatively small and broad in 
proportion to its height. Its sculpture and the form of its 
protoconch are characteristic. anS latter, which is often re- 
markably complete. even in old shells, in Yunnan, is very 
prominent and consists Ren of a whorl! and a half but 
merges gradually into the younger parts of the embryonic 
shell. The apex is minutely concave and the tip of the apical 
half-whorl blunt and distinct. Even the protoconch is minute- 
¥ roughened though somewhat shining, and the remainder of 
the shell is ornamented with a reticulate sculpture ae 
of numerous fine vertical and spiral striae. This is 
conspicuous on the 2nd, 3rd and 4th complete whorls of the 
spire. It becomes somewhat obscure on the basal whorl (5th) 
of the rag and still more so on the body- whorl. On the last, 
moniliform sa Bago In some specimens there is a linear 
ere! keel on the eee wid There are also as a rule a 
numbe 
Sometimes occur on the whorls of the spire. They sth a 
blackish colour. In dry shells the general colour is deep bro 
with a porch tinge on the apical whorls, but the fresh shell 
is gree 
ins Specimens from Yunnan the sculpture is better devel- 
oped than in most Japanese shells, but I have seen some e fro om 
the province of Omi in which it is almost as prominent as in 
many from Yunnan. The wore! souiptured Chinese form 
i be © known as f. occidentalis, nov 
! iGesaiiecinen: Me see28 28.1. Wad lady 
