302 Prof. T. R. Jones and Mr. J. W. Kirkby on the 
Nascra, Curt. 
Type N. cilialis, Hiib., Curt. Brit. Ent. xu. 599. 
Nascia citrinalis, sp. n. 
Fore wings pale straw-colour, tinged with yellowish 
towards the hind margin, with a yellowish spot at end of the 
cell and slightly darker below the costa; fringes silvery 
white, with a dark leaden-grey base. Hind wings pale 
straw-colour, tinged with grey, much greyer along the costa ; 
fringes also straw-colour. Head, thorax, and abdomen con- 
colorous. Underside paler, with a brown subcostal streak in 
the fore wing. 
Expanse of wings 28 millim. 
One female from Dharmsala. 
Distinguished at once by its smoothness and total absence 
of markings or streaks. 
[To be continued. | 
XLVI.—Notes on the Paleozoic Bivalved Entomostraca.— 
No. XXX. On Carboniferous Ostracoda from Mongolia*. 
By T. Rupert Jones, F.R.S., and James W. KIRKBY, 
Esq. 
[Plate XVI. ] 
THE Ostracoda figured on the accompanying Plate represent 
the leading forms of a series of specimens brought to Russia 
from Mongolia, in a small collection of Carboniferous fossils, 
by the eminent traveller M. G. N. Potanin, and which have 
been selected and sent to us by M. P. N. Wenjukoff, of the 
Geological Museum in the Imperial University at St. 
Petersburg. 
Most of the species, if not all, are well known also as 
British fossils ; but we think them of sufficient interest for 
special notice on account of their coming from so distant a 
locality. It was previously known that certain of these 
species enjoyed a great range in time, being common to both 
* No. XXIX. appeared in the Ann, & Mag. Nat. Hist. for October 
1880. 
