8 Psyche [February 
A female of this species was obtained at East Walpole, Mass., 
May 26, 1908. 
Agathomyia divergens Loew. 
Callomyia divergens Loew, Centur., V, 77 (1865). 
Aside from the type there is a specimen in the Museum of Com- 
parative Zoology, from the District of Columbia. 
Agathomyia notata Loew. 
This species has been obtained by the writer at Westville, N. J., 
July 2, 1893; Riverton, N. J., June 1; Auburndale, Mass., August 28; 
and Hanover, N. H., July 5, 1908. 
Callimyia venusta Snow. 
I was very much surprised to capture at Shackford Head, near 
Eastport, Maine, July 14, 1909, a specimen of this beautiful species, 
agreeing in every respect with the description. It is a true Callimyia. 
UnusuaL Parasitic Hasirs or AN ArricaAN Epuyprip. By 
Dr. C. Wellman, translated from Zeitschr. wiss. Insektenbiol., N ov. 18, 
1909, p. 356. . 
While collecting insects some time ago in West Africa, a small fly 
which was laying eggs on living ants (Cremastogaster sp.) attracted 
my attention. The fly rested on her victim, inserted her ovipositor, 
and then carried the seemingly perplexed and helpless ant into a 
small deserted spider burrow, where the ant remained until the fly 
larva had emerged. It was interesting to see how well the fly managed 
so strong a fighter as the ant, for this ant can sting severely. At first 
I mistook the fly for a Phorid as I knew Phora formicarum to be parasi- 
tic on Lasius niger, but on closer examination by specialists, it proved 
to be a member of the Ephydridae representing a new genus and 
species. I take this occasion to present these observations as this 
kind of parasitism is to my knowledge something entirely new among 
Diptera. 
B... Bi 
