Or 
On the Subfamily Bruchomyime. 437 
description, differs from our species chiefly in the thoracic 
markings and in the absence of certain portions of the 
median vein. 
Precisely the same portions of this vein are faint in 
A. wakefieldi, which can therefore be safely regarded as 
forming a complete conuecting-link between the genera 
Arctoneura and Casa. These two genera should probably be 
united. 
LI.—A Note on the Subfamily Bruchomyiinee (Diptera 
Nematovera). By I. W. Epwarps. 
(Published by permission of the Trustees of the British Museum.) 
In a recently published paper* Alexander has described a 
remarkable new Tanyderid fly, to which he gives the name 
Bruchomyia argentina, erecting the new subfamily Brucho- 
mylinge for it, on account of the very wide divergence from 
the previously known members of the family Tanyderidze. 
The discovery of a fossil representative of this group in the 
amber collections in the British Museum is of no little interest, 
and it is therefore described below. The fossil form is 
obviously related to Bruchomyia, but differs too much from 
it to be placed in the same genus ; it appears to be extremely 
similar to Paleosycorae tertiarie, Meunier (Misc. Kut. xii. 
p. 50, 1905), and is certainly congeneric and just possibly 
conspecific with this insect, but the differences in the number 
of antennal joints, in the length of the’ subcosta, and in the 
male hypopygium seem to indicate a specific difference. 
Even if these differences prove to be only individual, the 
incompleteness of Meunier’s description (he knew only the 
male) will justify the description of the specimens under my 
notice. 
PaLOsycorax, Meunier. 
Allied to Bruchomyia, Alexander, but differing (cnter alia) 
in the 16-jointed anteunee, spurless tibize, presence of vein Sc, 
shorter R., and shorter and not undulated Cuy. 
- Paleosycorax molophilina, sp. n. 
Colour apparently uniformly brownish; pubescence of 
* “A new Subfamily of Tanyderid Flies (Diptera),” Ann. Ent. Soc, 
Amer, xiii. pp. 402-406, pl. xxxii. (Dec. 1920). 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 30 
