386 Journal of the Asiatic Sociely of Bengal. |{N.S., XIX, 
species! Some of these stray over the Kakhyen (Kachin) 
mountains or up the rivers themselves from Burma into the 
upper Salween valley or the valleys of the tributaries of the 
Irrawadi, but the species and even the genera are for the most 
part Chinese, except in the extreme west of the province. Some 
such characteristic Chinese genera as Cathaica, the range of 
which extends as far west as Kashmir, are absent or almost 
absent from Yunnan, but on the other hand _ still more 
characteristic genera and subgenera such as Huhadra and 
Holcauchen occur. - 
f the 19 forms represented in the collection now under 
consideration none were collected in the Irrawadi or the 
Salween watersheds, 16 in that of the Mekong. and 3 in that of 
the Yangtse. It is difficult if not impossible to discover 
in what watershed shells recorded previously from Yunnan 
were discovered as the localities published are often those of 
obscure villages, but it is noteworthy that with one exception 
(in which there are different subspecies in the two watersheds) 
no species that Professor Gregory and his son collected was 
found on both the Mekong and the Yangtse. None, moreover, 
except the peregrine Lulota singularis are identical with those 
obtained by the late Dr. John Anderson ? on the upper Salween. 
These last, indeed, as might have been expected, were for the 
most part not Chinese, but Burmese forms. 
DESCRIPTION OF THE COLLECTION. 
Family ZONITIDAE. 
1. Helicarion resinaceus Heude. 
1885.3 Helicarion resinaceus, Heude, Mém. Hist. Nat. Emp. Chinois i, 
- 102, Plate XXVI, Fig. 6. ; 
One large shell in good condition. North foot of Jing-la, Jugeh river 
a tributary of the Yangtse. Altitude, 7,200 feet. 29. vii. 22. 
This shell differs from Heude’s figures in that. the spire 
is slightly more elevated, but especially in the sculpture, the 
form of the mouth and the structure of the umbilicus, the 
agreement is otherwise close. It has the peculiar — 
- S 
almost exactly the same measurements (viz. 20 mm. * 17 
mm. x 10°5 mm.) as those given for the type specimen. 
The synonomy of some of the species is so obscure that exact 
numbers are at present impossible. 
w 
Zz 
17 
< 
‘= 
> 
5 
5. 
i) 
“= 
3 
5, 
& 
pha 
~~ 
: . Res Yunnan, p. 873. 
am indebted to Dr. Baini Prashad for information about the 
dates of publication of the different parts of Heude’s account of the 
molluscs in his *‘ Mémoires.’’ - Parts 1 and 2 (pp. I-87, Plates XT-XXI) 
were issued in 1882; part 3 (pp. 88-124. Plates XXII-XXXII) in 1885 
and part 4 (pp. 125-199, Plates XXXIf{I-XLIII) in 1890. 
