
NE ee 
ee 
1923.1 Zoological Results of Expedition to Yunnan. 425 
Corbicula lamarckiana Prime. 
(Plate 16, Fig. 9.) 
1864. Corbicula Lamarckiana, Prime, Ann. Lyc. Nat. Hist. New York, 
1877. bane petal any Nevill, Journ. As. Soc Bengal, XLVI, p. 40. 
1878. Corbicula lamarckana, Nevill, Anat. Zool. Res. Yunnan, p 902, 
This species was originally described by Prime from the 
Laos Mountains, Cambodia, and Nevill later referred specimens 
from Hota and Momein, Yunnan, collected by Anderson, to it. 
Some of the specimens were later sent to Mr. H. B. Pre ston, 
who named these indiscriminately as C. stviatella Deshayes and 
. oceidens Benson In Gregory’s collection there are a large 
number of dead shells collected near Pangaloi, east of Hsaio- 
sin-kai in the dried up bed of a tributary to the Taping 
River. Another shell. which I also refer to this species, was 
collected at an altitude of about 6,750 feet in the canyon of the 
Mekong above Lo-atar (Tseku). The large number of shells 
of various sizes agree in all respects with the shells collected 
by Anderson and referred by Nevill to Prime's C. lamarckiana, 
with a figure and description of which they also agree in all 
respec 
I ce. no doubt that the species C. debrixiana, C. rathou- 
sana, OC, fenouiliana and C. presse-plicala, which Heude ! des: 
cribed from parts of China, including Yunnan, are all referrable 
to this species. 
Corbicula yunnanensis Nevill. 
(Plate 16, Fig. 16). 
1877. Corbicula yunnanensis, Nevill, op. cit., p. 40. 
1878. Corbicula yunnanensis, Nevill, op. cit. , p. 902, Fig. 32. 
Nevill’s description of this species is very complete, but 
the figure, in his second paper, is rather poor. lis comparison 
of the species with the Cambodian species CO. linneana Prime 
and the Chinese C. mulleriana® Prime is also not justifiable. I 
pre duccaned. 23,82, Ind. ve. 
s C. diminuta (op. cit., seems to be closely 
ll) s 
allied, if not actually identical tty Novill’s species 
“ 


' Heude, Conch. Fluv. de la Prov. Nanking, X (1885). 
Fem yPrime, Ann, Lye. Nat. Hist. New York, VAIL, pp. 14, 3; ie gs la 
(1864). 
