248 F. W. EDWARDS—THE AFRICAN 
11. Abdominal segments with complete basal bands... 10. quasiunivittatus. 
: 2 basal lateral white spots ; thorax whitish at 
sides ... ach ; sn w» Ll. lateralis. 
12. Smaller blackish species ; hind ungues in 3 exist 12. caliginosus. 
Larger yellowish aie ; hind ungues in ¢ unequal Sede 
Theo.)... is n ..13. ochraceus, 
Species incertae sedis; a re Toot etiiek badd ats ee of hind 
tibiae ; scutellum with golden-yellow scales ... tee 14, lencarthrius. 
1. O. cumminsi, Theo. (Culex), Mon. Cul. III, p. 214 (1903). 
Culicada mediopunctata, Theo., Mon, Cul. V, p. 304 (1910). 
o fuscopalpalis, Theo., Mon. Cul. V, p. 307 (1910). 
The type of C. mediopunctata is only a variety of O. cumminsi with unusually 
large abdominal spots, traces of which can almost always be seen. The male 
genitalia of C. fuscopalpalis do not differ from those of O. eumminsi. 
Nyassaland Protectorate ; Uganda; Ashanti. 
2. O. dentatus, Theo. (Culex), First Rep. Welle. Lab., p. 75 (1905). 
Evidently closely allied to O. cummins, but differs in the banded abdomen. 
The male is at present unknown. 
Abyssinia ; Transvaal. 
3. O. nemorosus, Meg., Syst. Beschr. I, p. 4 (1818). 
(2?) Grabhamia maculosa, Theo., Ann Mus. Nat. Hung, III, p. 105 (1905), 
Culicada nemorosa, Theo., Mon, Cul. LV, p. 370 (1907). 
Several specimens from Algeria (Rev. &. A. Laton) in the British Museum seem 
to belong to this species. Some are very much paler than others, one having 
the iors and abdomen almost entirely buff-coloured, yet I feel sure it is only a 
variety. This specimen agrees very well with Theobald’s description of 
G. maculosa, which makes it seem possible that the latter is only an extreme 
form of O. nemorosus. The corresponding pale variety of Stegomyia fasciata 
(described by Mr. G. A. K. Marshall in the last number of this Bulletin) is 
common in Algeria, as is an ochreous form of C. pipiens. 
Algeria. 
4. O. dorsalis, Mg., Syst. Beschr. IV, p. 242 (1818). 
Grabhamia dorsalis, Theo., Mon. Cul. IIT, p. 251 (1903). 
Grabhamia subtilis, Ed. & Et. Serg., Bul. Mus. Paris XI, p. 240 (1905), 
ie willeocksii, Theo., Mon. Cul. IV, p. 294 (1907). 
The forms described as G. subtilis and G. willcocksti only differ in having the 
pale markings of the abdomen rather more extended than in typical C. dorsalis, 
and are evidently merely pale varieties of Meigen’s species. 
The ungual formula in all the specimens I have seen (including British 
specimens fletommined by Mr. Theobald as G. dorsalis and as G. puleripalpis, 
and African specimens of G. subtilis and G. willeochsii) is: SG 2.1—1.1—1.1, 
OQ 1.1—1.1—1.1, and it is most probable that errors of observation were made 
in compiling the table on p. 285 of vol. IV of the Monograph of the Culicidae. 
I am not quite certain whether the species at present under consideration is 
really C. dorsalis or C. pulcripalpis, Rond., or whether these two names are 
synonymous. Whichever may be the case, it is certainly the same as our British 
species, which has always been known as C. dorsalis, It is curious, however, that 
