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



some other points of structure, noted elsewhere, in which this species diverges 

 from typical OcliJerotatus. 



S. Nigeria ; Camerun ; Togo. 



2. 0. wellmani, Theo. (Danielsia), Entomologist, XXXVIII, p. 103 (1905). 

 Angola; Sierra Leone (Daru, I)v. J. C. Murphy, I Q taken June 1911); 



British East Africa (Mumias, T. J. Anderson, I Q taken 29. iv. 1911). 



3. 0. apieoannulatus, nom. n. 



Aedimorphus alboannulatus, Theo., Entomologist, XXXVIII, p. 154 (1905), 

 nee Culex {Ochlerotatus) alboannulatus, Macq., Dipt. Ex. Sup. IV, p. 10 

 (1850). 

 This forms, with the two following, a group of very closely allied species, dis- 

 tinguished collectively from all the rest of the genus, and in fact from all other 

 Culicini, by the peculiar leg-markings {vide key). It is hardly worth while to 

 point out that the fact that these three species have till now been placed in three 

 different genera, affords one more proof of the absolute impracticability of a 

 classification based mainly on scale characters. 

 Sierra Leone. 



Fig. 3. — Ochlerotatus longipalpis, Griinb. Head and thorax, and apex of abdomen ( £ ), 



ov. protruded ovipositor. 



4. 0. marshalli, Theo. {Stegomyia\ Mon. Cul. I, p. 310 (1901). 



Scutomyia marshalli, Theo., Gen. Ins. Culicidae, p. 19 (1905). 



S. Rhodesia. 



5. 0. simulans, Newstead & Carter (Reedomyia), Ann. Trop. Med. V, p. 240 



(1911). 



Seems only to differ from O. marshalli by the characters given in the key. 

 One specimen (paratype) has the white spot on the hind femora only, not on the 

 others, and Mr. Carter informs me that " the spots on the fore and mid femora 

 of the type are simply due to small patches of scales being rubbed off." 



Ashanti. 



