M. Bezzi 
31 
and not reaching the border of the mouth; bristles of the underside of the 
femora longer, stronger and more numerous than in previous species; hind 
tibiae with longer ciliation; the portion of the fourth vein in front of the 
bend is longer than the hinder portion; average size 8-9 mm. 
helerochaeta Villeneuve. 
Passeromyia. 
Rodhain and Villeneuve, 1915, p. 592; Rodhain and Bequaert, 1916, p. 219. 
Ornithomusca, Tyler Townsend, 1916, p. 45. 
1. Passeromyia longicornis (Macquart). 
Cyrtoneura longicornis , Macquart, 1851, p. 228 (255), pi. 23, fig. 8; Stein, 
1919, p. 111. 
Ornithomusca victoria , Tyler Townsend, 1916, p. 45. 
Geographical distribution. Australia; Victoria (in nest of Pardalotus sp.), 
New South Wales, Sydney; Tasmania. 
2. Passeromyia heterochaeta (Villeneuve). 
Muscina longicornis , Stein, 1909, p. 221 (non Macquart, 1851); 1919, a, 
p. Ill, and b, p. 68. 
Larva (without a name), Rodhain, 1914, p. 214, fig. 1. 
Muscina heterochaeta , Villeneuve, 1915, p. 225, fig. 1. 
Passeromyia heterochaeta , Rodhain and Villeneuve, 1915, p. 593; Rodhain 
and Bequaert, 1916, p. 250, figs. 1-6, pi. xix, fig. 2; Roubaud and Van 
Saceghem, 1916, p. 765; Roubaud, 1918, p. 428; Stein, 1919, p. 86; Patton, 
1920, p. 30, pi.; Engel, 1920, p. 258. 
Geographical distribution. Africa: Nyasaland, Port Herald; N.W. Rhodesia, 
Chilanga; Katanga, Elisabethville; British East Africa, Mombasa; Belgian 
Congo, Ouelle, Leopoldsville, Boma, etc. I have in my collection specimens 
from Usambara, Nguelo. 
Asia: India, Madras; Java, Batavia; China, Kamsi. I have received 
numerous specimens from S. China, Canton, by Prof. C. W. Howard. 
Ethology. The species has been found in the nests of various species of 
birds of the genera Passer , Hirundo, Cinnyris, Spermestes , Sitagra, Ploceus , 
etc. 
According to Rodhain and Bequaert the larvae of Passeromyia have the 
same habits of intermittent haematophagy as observed in the floor maggot 
and other African Calliphorines belonging to the genera Auchmeromyia and 
Chaeromyia which live upon the blood of bare-skinned mammals. 
It is interesting to note that Passeromyia, as a bird-parasite, is widely 
spread over the whole tropical region of the Old World only. There are 
however true Calliphorine flies the larvae of which live upon birds and have 
the same habits of intermittent haematophagy as is the case in Passeromyia. 
These flies belong to the well-known genus Protocalliphora which we shall 
examine presently. 
