﻿12 F. W. EDWARDS — A SYNOPSIS OF THE SPECIES OF 



mesonotum, but these lines are sometimes indistinct anteriorly or even absent 

 altogether (especially in the male). The female cerci are longer in this than in 

 any other species of the genus, equalling the eighth abdominal tergite in length. 

 I can see nothing to separate S. lilii or S. bromeliae from S. simpsoni, beyond the 

 absence of the yellow lines on the thorax. 



Sudan ; Abyssinia ; Uganda ; Nyasaland ; Transvaal ; Angola. 



10. S. metallica. nom. n. 



Quasistegomyia dubia, Theo., Mon. Cul. V, p. 133 (1910). 



The new name is proposed to avoid confusioD with Stegomyia dubia, Theo., 

 which, however, also disappears as a synonym of S. africana. The species is 

 probably valid, notwithstanding its close similarity to the preceding, owing to the 

 presence, already referred to, of a tooth on the smaller claw of the fore and mid 

 feet of the male. The thin thoracic lines noticed in S. simpsoni are not 

 observable in the single male in the British Museum collection. The patches of 

 flat silvery scales in front of the scutellum unite in front of the bare space into a 

 small patch of white narrow-curved scales. It should be mentioned that the 

 white scales in front of the scutellum in S. simpsoni are variable in width. Apart 

 from these points S. metallica appears identical with S. simpsoni. 



Sudan. 



11. S. albomarginata, Newstead, Ann. Trop. Med. I, p. 16 (1907). 



This and the following species are closely allied (possibly local races of one 

 species), but strikingly different from all other African species in markings. 

 They approach closely to the Oriental Desvoidya obturbans, and though the males 

 of the African species are unknown there is no doubt that they belong to the 

 Desvoidya group of Stegomyia. 



This species was described by Newstead from one female, with the fifth and 

 following segments of the abdomen missing. It differs from the next species, 

 apart from the characters mentioned in the table, in having very few white 

 scales on the front of the mesonotum. 



Congo. 



12. S. argenteoventralis, Theo. (Dendromyia), Mon. Cul. V, p. 588 (1910). 

 Dendromyia affinis, Theo., Mon. Cul. V, p. 589 (1910). 



As stated elsewhere this species has no bristles on the metanotum and bears no 

 relation to the Sabethini. There is a rather large white area on the front of the 

 mesonotum. This species, with S. albomarginata, differs from all other African 

 Culicidae in having the front and under surface of the hind femora entirely 

 tvhite. The venter is also strikingly white, except the last two segments, which 

 are black. In D. obturbans the femora are marked in the same way, but the 

 venter sometimes (not always) shows apical dark bands. 

 Ashanti. 



Genus Howardina, Theo. 

 Mon. Cul. Ill, p. 287 (1903). 

 ? Macleaya, Theo., Entomologist, XXXYI, p. 154 (1903). 

 Scutomyia, Theo., Entomologist, XXXVII, p. 77 (1904). 

 Quasistegomyia, Theo., Second Kept. Welle. Lab., p. 69 (1906). 

 This genus differs from Stegomyia in that the claws of the female are all simple. 

 Messrs. Dyar and Knab include Haemagogus, and say of the genus, " We take 



