364 r. W. EDWARDS.- — MOSQUITOS IN THE BRITISH MUSEUM COLLECTION. 



First longitudinal vein marked like the costa, except that the basal black spot is 

 absent, and the second (the one below the third costal) is narrowly interrupted with 

 white near the base. Second vein white about the place of origin of the third vein, 

 at the base of the fork and at the tip of the upper branch of the fork, otherwise black. 



'f'''''''f'iiiii)itiiiiii«iiittir(tttiiiiil\;."l 



Fig. 5. Wing of Anopheles domicolus, Edw., sp. n. 



Third vein white, with small black spots close to the base and tip. Fourth vein 

 black, white towards the base, about the cross- vein, at the base of the fork and at the 

 tip of each branch. Fifth vein black with a small white spot at the extreme base,, 

 a longer one before the fork, very small ones at the cross-vein and at the tip of the 

 upper branch, longer ones beyond the middle of the upper branch and near the 

 base of the lower branch. Sixth vein black with two rather small white spots, one 

 at and the other near the base. Pale fringe spots opposite the terminations of all 

 the veins except the sixth. Upper fork-cell with its base nearer the base of the 

 wing than that of the lower. 



Length of body, 3 "5 mm. ; of wing, 3 '3 mm. 



Northern Nigeria : Zungeru, Oct.-Nov. 1915, six females taken in bungalow 

 {Dr. W. B. Johnson) ; presented to the British Museum by the collector. 



This species belongs to the A. marshalli group, the members of which are closely 

 allied and difficult to separate, and in some cases of doubtful specific rank. The 

 new form differs from A. marshalli, which it resembles most closely, in having the 

 base of the costa entirely dark, no white interruption in the middle of the third black 

 spot on the first longitudinal vein ; a longer black spot near the base of the fifth 

 vein ; white rings at the bases of the last four hind tarsal joints ; and, most important, 

 shorter and slightly broader wing-scales. In none of the six specimens do.es there 

 appear to be any variation in regard to any of these points, and although A. marshalli 

 is somewhat variable, I have not seen a specimen which could be confused with 

 the present form. It therefore seems justifiable to regard these Nigerian specimens 

 as belonging to a species distinct from A. marshalli, though probably representing it 

 in this region. 



