205 
(infra)-humeral bristle, two notopleural bristles; the præsutural 
bristle standing lower than the posthumeral; one intraalar bristle; 
three supraalar and two postalar bristles. Pleura grey with some 
indefinite yellowish markings. 
Scutellum with eight marginal bristles. Abdomen darker than 
thorax, blackish grey, somewhat shining, second segment pale yel- 
lowish with only a narrow hind margin dark, third segment with 
the anterior half yellow, both segments with the middle stripe 
dark; seen from behind the abdomen is whitishgrey pruinose; 
venter similarly coloured. Legs yellow, tarsi brownish, black at 
the end. Front femora with a dorsal, posterodorsal and poste- 
roventral row of long fine bristles, middle femora mainly short- 
haired, hind femora with an anterodorsal and anteroventral row of 
short, but rather strong bristles, and with some similar bristles on 
the anterior side in the middle; front tibiæ short-haired, only 
with apical bristles, middle tibiæ with two short posterior bristles 
and strong apical bristles, hind tibiæ curved, with three to four 
anterodorsal bristles. "Wings hyaline, middle cross-vein narrowly 
seamed,' posterior cross-vein S-like curved. 
Female. Front and vertex broader than in the male, but how- 
ever not broad; the middle stripe brown, the sides silvery as in 
the male. The legs much darker than in the male, the femora 
blackish grey, only reddish below towards the apex, the tibiæ 
brownish, tarsi black. To judge from my somewhat damaged fe- 
male specimen the abdomen has no or indistinct yellowish mar- 
kings. Length 7—8 mm. 
III. 
I have only succeded in finding a few litterary records of 
dipterous larvæ parasitic on birds. In Europe the larvæ of Pro- 
tocalliphora azurea Fall. (Lucilia dispar Léon Dufour) are said") 
1) Brauer & Bergenstamm: Die Zweifligler des kais. Mus. zu 
Wien (Denkschr. d. mathem.-naturwiss. Cl. d. kais. Akad. LXI. 1894 
pag. 10). — 
