70 A Monograph of Culreidae. 
stem ; the fifth has three on its upper branch and one large one 
towards the base on its stem and one at the apex of its lower 
branch ; the sixth has three black spots; fringe with pale spots 
at the end of each vein, except the sixth, that at the end of the 
lower branch of the fifth large ; first sub-marginal cell longer and 
narrower than the second posterior cell, its stem nearly two- 
thirds the length of the cell; stem of the second posterior as 
long as the cell; bases of the fork-cells nearly level; super- 
numerary and mid cross-veins nearly in a straight line, the 
posterior cross-vein nearly three times its own length distant 
from the mid ; halteres testaceous. 
Legs deep brown ; coxae pale; traces of narrow pale apical 
bands on the fore and mid femora and tibiae, more pronounced 
in the hind legs. 
Length.—4°5 mm. 
6.  fPalpi pale brown, the two apical joints swollen, with a 
few pale hairs ; the apical joint dark, a pale band at the apex 
of the next three joints; antennae with bright fawn hairs. 
Abdomen pallid, with darker markings in the form of lateral 
crescentic figures, especially seen in the basal segments ; claspers 
much as in funesta. (Fig. 43, b and c.) 
Length.—4°5 to 5 mm. 
Habitat.—Touggourt, Algeria (Dr. Chaudoye), per Dr. Billet. 
Observations.— Described from a series of ?’s sent by Dr. 
Billet. It was first taken by Dr. Billet to be superpictus, but — 
Leveran informed him it was not Grassi’s species. It is a very 
abundant species at Touggourt and the only one found in that 
locality. The discoverer points out that it is very interesting, 

Fig. 45. 
Pyretophorus Chaudoyet. un. sp. 
(To show variation in wing spots.) 
that in winter until up to June one only sees Culex pipiens at 
this place, and these disappear from June and give place to this 
Anopheles. At the same time as this Anopheles appears, there 
also appears the malaria, usually in a grave form, and from 
which the natives themselves suffer. Sporozootes have been 
