On Mammals from British Guiana. 139 
The type came from the Himalayas. In Hampson’s Moths, 
iv. p. 305, aureolalis, Led., is made a synonym of D. evazalis, 
Walker; at p. 424 he makes aureolalis, Led., a Pionea, and 
sinks ochrealis, Moore, and contractalis, Warren, to it; these 
last two have different scaling, are of a different shade of 
yellow, and, I think, are good forms: in P. Z. 8. 1898, p. 689, 
and 1899, p. 246, he repeats the same positions, but in the 
former he gives Lederev’s reference as p. 473, and in the latter 
as p. 875; but both Lederer’s references refer to the same 
insect, the former being a list with localities and the latter a 
description of the same. 
Hemiscopis polusalis. 
Botys polusalis, Walker, xviii. 703 (1859). 
Hydrorybina polusalis, Hmpsn. Moths Ind. iv. p. 239 (1896). 
Clupeosoma polusalis, Umpsn. Trans. Ent. Soc. 1897, p. 217. 
Sarawak, Borneo. 
The genus Clupeosoma=Hydrorybina belongs to the 
family Hydrocampide ; but from the examination of a number 
of examples of this species from Sarawak I find that it does 
not belong to that family: vein 10 on fore wings is not 
stalked with 8 and 9, it is really only approximated to 8 and 
9; it is necessary to denude the wing of scales to see this 
properly. The species fits well into the genus Hemiscopis, 
Warren. 
XXI.—On a Collection of Mammals from the Kanuku 
Mountains, British Guiana. By OLDFIELD Tuomas, F.R.S. 
By the help of Mr. F. V. McConnell, Mr. J. J. Quelch, 
recently Director of the British Guiana Museum, has been 
enabled to make a collecting expedition to the Savannah 
region in the interior of the colony, near the Brazilian 
boundary. The collection was formed in the Kanuku 
Mountains, about 59° W. and 3° N., and on the savannahs 
near their base, at altitudes varying from 240 to 2000 feet. 
Mr. McConnell, whose name is already known to science 
by his exploration of Mt. Roraima*, has been generous 
enough to present the whole of the mammals obtained by 
Mr. Quelch to the National Museum, and I have now the 
privilege of giving an account of them. 
The collection proves to be of extraordinary and quite 
* See Trans. Linn. Soc., 2nd ser. Zool. viii. p. 51. 
