246 T. W. EDWARDS — THE AFEICAJf 



Genus MuciDus, Theo. 

 Mon. Cul. I, p. 268 (1901). 



1. M. seatophagoides, Theo., Mon. Cul. I, p. 277 (1901). 



31. sudanensis, Theo., Third Eep. Welle. Lab. p. 252 (1908). 



Tibiae with pale bands at the base, middle and apex, all of about equal 

 breadth. All tarsi with pale basal bands, most marked on the hind pair. 

 Wing-fringe with eight pale spots. 



The proboscis of M. sudanensis is said by Theobald to have a white band at 

 .the tip ; this is an error, and the statement was evidently intended to apply to 

 the palpi, the last joint of which is white. The species is closely related to the 

 Australian M. alternans, Westw., which differs in having the tibiae dark at the 

 apex, with two narrow white bands. 



Sudan ; Gold Coast ; India. 



2. M. mucidus, Karsch, Ent. Nachr. 1887, p. 25.^ 



M. africanus, Theo., Mon. Cul. I, p. 274 (1901). 

 M. grahami, Theo., Mon. Cul. V, p. 127 (1910). . ,, , 



Fore and mid tibiae narrowly white at base, broadly white at apex. Hind. 

 tibiae narrowly white at base and apex and with a very narrow indistinct while 

 band in the middle. Fore and mid tarsi all yellowish. Wing-fringe usually with 

 seven pale spots. 



The type of M. grahami is a dark specimen, in which the pale fringe spots 

 are indistinct, only four being clearly visible, and traces of two others. Apart 

 from this it does not differ from M. mucidus. The type of M. africanus has seven 

 pale fringe-spots, not five as stated by Theobald. 



M. alternans does not occur in Africa ; the Natal specimen included by 

 Walker in his series of Culex commovens { = M. alternans) is apparently a variety 

 of M. mucidus. 



Sierra Leone ; Ashanti ; S. Nigeria ; N. Nigeria ; Nyasaland Protectorate ; 

 Delagoa Bay. 



Genus Ochi^erotatus, Arrib. 

 Kev. Mus. La Plata, II, p. 143 (1891). 

 CuUcada, Felt, N.Y. State Mus. Bull. No. 79, p. 391 b (1904). 

 Culicelsa, Felt, I.e. 



Mimeteculex, Theo., Third Eep. Welle. Lab. p. 258 (1908). 

 Grabhamia, Theo., part. 

 Coquillett (Science, vol. 23, p. 314, 1906) sinks both CuUcada and Culicelsa 

 under Ochlerotatus, and though Theobald (Mon. Cul. IV, p. 14) regards this as 

 a retrograde step, it seems to be inevitable. The present writer is in entire 

 agreement with Coquillett as to the taxonomic value of toothed or simple claws 

 in the female, as all other characters seem to support divisions based on this. 

 A more detailed study may reveal satisfactory characters by which to separate 

 Culicelsa and Ochlerotatus (CuUcada), but at present such have not been dis- 

 covered. Dyar, using the male genitalia as a basis of classification, doubts 

 whether the two genera can be kept separate. The chief structural difference 

 appears to be that in Culicelsa the hind ungues are simple, while in CuUcada 

 they are toothed ; but O. caliginosus and O. ochraceus have the hind ungues 

 simple in the male, but toothed in the female, so that this character cannot be of 

 veiy great importance. 



