264 DIPTERA. 
antenne are inserted above the median line of the eyes, and that the arista is long- 
plumose.” His first species, H. rujina, Big., from California, as regards the arista and. 
the venation, agrees with the above-mentioned generic characters, but the insertion of 
the antenne is distinctly beneath the median line of the eyes; in #. rujina the vibrisse 
are just at the oral margin. 
Homodexia flavipes, Big., is a very different insect: according to the type, the eyes 
descend much lower, the arista is very slightly pubescent, and the vibrissee are inserted 
at some distance above the oral margin. I should be inclined to place it in the 
Tachinid-genus Telothyria, though I cannot identify it with any of the species described 
by me. 
Homodesia spinosa, Big., also has the arista no more than pubescent, and has a row 
of short bristles along the third vein ; this latter character probably induced the author 
to give it its specific name, though in his description this is not mentioned ; the insect 
has the general aspect of a Morinia. 
Homodexia triangulifera, Big., is again very heterogeneous; it is synonymous with 
Hypostena blandita (anted, p. 142), which, in Prof. Brauer’s opinion, must be included 
in the genus Gymnostylia ; Bigot’s name has priority. 
Homodexia longicornis, Big., agrees in many respects with Calodexia calceata (antea, 
p. 258), but I am not certain that both belong to the same species. | 
The above statements, however, show that the genus Homodeaia, Big., includes very 
heterogeneous forms, and therefore cannot be maintained. 
As to Oplisa albifacies and O. nigrifacies, Big., these two species differ too much inter se 
to be included in the same genus; and neither the one nor the other possesses the generic 
characters given by Bigot himself in his analytical table (Revue d’Entomol. 1885, 
p- 266). Both have more the aspect of Tachinine: O. albifacies may be included in 
the genus 4nisia, though it is different from all the species mentioned by me (anted, 
pp. 186 et seqg.); O. nigrifacies is conspecific with Degeeria longipes (antea, p. 155), 
Bigot’s name having priority. 
Pyrrosia ochracea, Big., bears a striking resemblance to the female of Phasiopteryx 
bilimeki (=Neoptera rufa, v. d. Wulp, anted, p. 166). The short diagnosis given by 
Bigot (Ann. Soc. Ent. Fr. 1888, p. 268) is supposed to include both sexes ; nevertheless, 
nothing is said about the very abnormal shape of the wings in the male. 
Anthracomyia pallidicornis, Big., is certainly misplaced in the genus Anthracomyia, 
Rond., which contains only black species; I should be inclined to include it in 
* ; ’ } an ' 
Calodewia. 'Sagir. (eo eg ie, we by ine. 
The genus Myiomima, Brauer & v. Berg., seems to be allied to Rhynchodewia, Big. 
The species on which it is founded is unknown to me, 
