70 THE MOSQUITOES OF EGYPT, THE SUDAN AND ABYSSINIA Genus Pyretophorus, Blanchard (Howardia, Theobald) Compt. Rend. Hebdom. Soc. cl. Biol. No. 23, p. 795, Blanchard ; Journ. Trop. Med. V., p. 181 (1902) Theobald ; Mono. Culicid. III., p. 66, Theobald (1903).

Pyretophorus costalis, Loew.

i Anopheles costalis, Loew.

< Anopheles gamhice, Giles.

(Anopheles gracilis, Donitz. (?)

(Plate V., Fig. 4) Ent. Zeit. Berlin, p. 55 (1866), Loew; Handbook Gnats, 2nd Edition, p. 511, Giles (1902) ; Mono. Culicid. I., p. 157 (1901) ; and III., p. 74, Theobald (1903); Beit. z. Kennt. cl. Anoph., p. 76, Donitz (1902).

Found by Dr. Balfour at Senga and at Roseires, on the Blue Nile. I have not seen any specimens myself from Egypt or the Sudan, but I have had specimens from Uganda. It also occurs in Khartoum. This is a malaria carrier.

Genus Myzorhynchus, Blanchard. (Bossia, Theobald).

Comp. Rend. Hebcl. Soc. d. Biol. No. 23, p. 795 (1902). Journ. Trop. Med., p. 181 (1902), Bossia; Mono. Culicid. III., p. 84 (1903).

Myzorhynchus paludis, Theobald Repts. Malarial. Comm. Royal Society England, p. 75 (1900); Mono. Culicid. I., p. 128 (1901), and III., p. 86 (1903).

Dr. Balfour obtained many on the Pibor (Bor and South of Goz-abu-Guma, White Nile) which showed no special peculiarities. He says they are very common there, but not very vicious. This species is much subject to the parasitic tick, often being covered with them. It is also probably a malaria bearer.

Previously, Captain Lyle Cummins obtained specimens from Bahr-El-Ghazal.

Genus Cellia, Theobald Mono. Culicid. III., p. 107 (1903) Cellia pharoensis, Theobald. Anopheles pharoensis, Theobald.

(Plate V., Fig. 1) Mono. Culicid. Vol. I., p. 169, (1901), & Vol. III., p. 109 (1903) Found by Dr. Balfour at Baro, also at Roseires on the Blue Nile (W. L. S. Loat and Dr. Balfour); Cairo (Keatinge) ; Ismailia (Ross).

This seems to be an abundant North and Central African species, and is undoubtedly a malaria bearer. It also extends into Arabia, having recently been sent me from the Aden hinterland, and it also occurs in Palestine.