262 F. W. EDWARDS—THE AFRICAN 
It is curious to notice, that when a species is common to the Ethiopian and 
and Oriental regions, or when a pair of closely allied species occurs in the two 
regions respectively, the African form is often much darker in colour than the 
Eastern. The phenomenon does not seem to be confined to the CULICIDAE, 
as I have noticed it in the Tipulid Conosia irrorata, Wied. 
The specimens mentioned by Theobald as having been taken in Australia 
belong to the concolor form. I have made several preparations of the male 
genitalia of each form, and can detect no difference whatever; the genitalia 
are of the ordinary pipiens and fatigans type. Theobald’s C. tigripes var. fusca 
(Mon. Cul. V, p. 394) the male genitalia of which I have also examined, 
includes the darkest forms. It is certainly not, as I at first thought possible, a 
distinct species. C. tégripes is widely distributed over Africa. 
8. C. theileri, Theo., Mon. Cul. III, p. 187 (1903). 
C. pettigrewi, Theo., Rec. Ind. Mus. IV, p. 15 (1910). 
A species very easily recognised by means of the striped femora. The co-type 
of C. pettigrewi in the British Museum exactly resembles C. theiler?. 
Transvaal; Madeira; India. 
9. C. univittatus, Theo., Mon. Cul. II, p. 29 (1901). 
Heptaphlebomyia simplex, Theo., Mon. Cul. ILI, p. 337 (1903). 
Heptaphlebomyia montforti, Ventrillon, Arch. Parasit. IX, p. 448 (1905). 
A rather obscure species, until the striped tibiae are noticed. Some specimens 
recall C. duttoni, but they can always be distinguished by the unbanded proboscis 
and legs. The British Museum series of HH. simplex consisted of 3 Q and 1 d 
C. univittatus (including type Q of H. simplex) and one 3 C. decens (labelled as 
type of HH. simplex, and figured in Mon. Cul. IV, p. 533). The co-types of 
H. montforti from Madagascar, which are in the British Museum collection, are 
certainly also C. univittatus. I do not believe the species is separable generically 
from Culex, The whitish spot on the apex of the tibiae is not more conspicuous 
in this species than in other members of the genus. 
N. Nigeria; Angola; S. Rhodesia ; Madagascar. 
10. C, pipiens, Linn., Syst. Nat. Ed. X, p. 602 (1758). 
Included here as varieties are : 
i. C. fatigans, Wied., Auss. Zweif. Ins. p. 10 (1828). The stem of the first 
fork-cell is a little longer than in C. pipiens. 
EK. Africa ; common almost everywhere in other parts of the tropics. 
C. fatigans is said by Grinberg (Zool. Anz. xxix, 1905, p. 390) to 
be, with Stegomyia fasciata, F., the commonest Culicine in Kamerun 
and Togo. It seems as though some mistake must have been 
made, as C. fatigans is unrepresented in any of the large collections 
of mosquitos which have been received in England from West 
A frica.* 
ii. C. pallidocephala, Theo., First Rept. Welle. Lab. p. 73 (1904). The 
scales of the head are paler and the thorax is dark brown instead of 
reddish brown. The costal margin is darker. 
Sudan; British East Africa. 
~ * Since the above was written I have seen three specimens from Sokoto, N. Nigeria 
(Dr. J. M. Dalziel). 
