68 THE MOSQUITOES OE EGYPT, THE SUDAN AND ABYSSINIA fifth joins it; fringe dark except where the lower branch of the fourth and fifth veins join the border where creamy patches occur; fork-cells both short, the base of the second posterior the nearer the base of the wing, both nearly equal in length, the first submarginal narrower than the second posterior, its stem as long as the cell, stem of the second posterior as long as the cell; supernumerary cross-vein slightly in front of the mid, the posterior nearly twice its own length distant from the mid. Halteres pale with fuscous knob.

Length. 3 mm. Habitat. Jebel Akmet-Aga on the White Nile, also on the Middle Sobat.

Observations.—Described from two perfect females taken by Dr. Balfour. They bear a very strong resemblance to Myzomyia funesta, Giles, variety umbrosa. Theobald (vide Rept. Malaria Exp. to Gambia, Mem. X, Liv. School Trop. Med. App. p. 4, 1903). The main differences are as follows : the palpi and the proboscis are relatively not so long as in M. funesta, and they are all black save for a minute pale apical band, whilst in funesta there are three pale bands; the wings are much more densely scaled than in funesta and the fork-cells shorter and with much longer stems than in funesta. I thus think it must be treated as a distinct species owing to the shorter palpi and not as a melanic variety.

Myzomyia funesta, Giles (Plates I., Figs. 1 & 2 ; III., Fig. 1, & V., Fig 2) (Hand. Bk. Mosq., p. 162 (1902), Giles; Mono. Culicid. I., p. 178 (1901); III. p. 34 (1903).

This species has been sent by Dr. Balfour from the Sudan, and he states it is common on the Sobat, where he found it in numbers. The specimens sent were quite typical. I believe it occurs all over Central Africa down to Fashoda. The Aving is figured on Plate I., Figs. 1 and 2.

Myzomyia n. sp.

A single much damaged Myzomyia was taken at Bor by Dr. Balfour, but it is too imperfect to describe, I am sure it is a new species however. Its marked feature is the pale grey ventral surface; the wings have only two yellow costal spots and a yellow apical spot which extends on to the first long vein, another pale spot towards the base of the first long vein, not reaching the costa and the base of the vein yellowish ; a pale spot at the base of each fork-cell, another at the cross-veins and another at the marginal cross-vein; on the lower branch of the fifth a long yellow area and another faint one on the stem ; fringe unspotted.

Length. 3 mm.

Anopheles (Myzomyia ?) impunctus, Donitz (Beit. II., Kennt. d. Anop. (1902), p. 67 ; Mono. Culicid. IIP, p. 54 (1903). This species is described by Donitz from Lower Egypt (Wadi Natrun). I have not seen any species which answers to the figure of the wing which he gives.