Descriptions of British Diptera. ]51 
Once taken near Duddingston ; likewise found in the vicinity of 
London, and in other parts of England. 
5. STRATIOMYS STRIGATA. (s.) 
Stratiomys strigata, Fabr ; Meig. iii. 139 Musca strigata, Gmelin Hir- 
tea longicornis, Scopoli, Ent. Car Musca tenebricus, Harris, Expos. 
pi. xi. fig 3 ? ? 
Readily distinguished from any of the preceding by having the 
surface of the abdomen entirely black : head, thorax, and scutellum 
brownish- black, clothed with tawny hairs ; the spines of the latter 
small and yellow : eyes greenish, pubescent, with two purple fas- 
ciae, the anterior one very narrow ; antennae black : abdomen black, 
thinly clothed with tawny hairs, the under side with three narrow 
yellowish-white bands narrowed to a point at each side, and placed 
on the hinder margin of the segments : thighs brown j tibiae yellow 
with a brownish ring near the middle and another at the apex : the 
tarsi tinged with brown. 
The female differs in having a yellow triangular spot between the 
eyes and another on the hinder part of the head ; the pubescence 
on the latter is light-coloured, and on the sides of the abdomen it is 
nearly pearl-white. 6-7i lines. 
Apparently occurring more frequently in Britain than any of the 
preceding species. " Near London," Slephcns's Catal. " New 
Forest," J. C. Dale, Esq.* " Raehills," Rev. William Little. 
Besides the above species, Mr Stephens possesses another true 
Stratiomys, which he names S. triangulata, the characters of which 
have not been published. 
GENUS ODONTOMYIA, Meig. 
Antennae longer than the head, the two first joints short and near- 
ly of equal length, the third elongate and conical, divided into five 
distinct rings, the apex compressed and narrowed into a short style : 
proboscis rather slender ; the labrum narrow and elongate ; scutel- 
lum with two spines ; eyes of the male with the facettes much 
larger on the upper than on the under side. 
In its other characters this genus scarcely differs from the preceding. 
The two groups, indeed, are so closely allied that Meigen has latter- 
ly included both in his genus Stratiomys. This he has probably been 
induced to do by observing that the antennae of O. microleon and 
0. argentata are of a structure nearly intermediate between the ty- 
pical form of Stratiomys and Odontomyia, the first joint being a good 
deal longer than the second. With this exception, however, the 
* London's Mag. Nat. Hist. iv. p. 263. 
