﻿AFKICAN CULICIDAE, OTHER THAN ANOPHELES. 13 



this to be a group specialised off from Aedes, the tarsal claws of the female having 

 lost the tooth. The small end joint of the [female] palpus is retained, which 

 differentiates the genus from Culex" Haemagogus differs in having the 

 prothoracic lobes large and approximated. 



1. H. unilineata, Theo. (Quasistegomyia), Second Eept. Welle. Lab, p. 70 



(1906). 



Stegomyia gebeleinensis, Theo., Mon. Cul. V, p. 157 (1910). 



„ gelebeinensis, Theo. (error), Mon. Cul. V, p. 151 (1910). 



Both the types are very much broken, but the thorax of each remains in fairly 

 good preservation. Both show two small areas of black flat scales on the 

 mesonotum immediately preceding the scutellum, which is clothed with flat 

 white scales. On this character Theobald founded his genus Quasistegomyia. 



H. unilineata is easily differentiated from other African Culicidae by the 

 white line down the middle of the mesonotum. It resembles Stegomyia in general 

 appearance, and the tarsal banding is similar to that of S, fasciata and 

 S. sugens. The species is represented in the Oriental Region by the common 

 H. (" Stegomyia ") scutellaris. This resembles H. unilineata in most respects, 

 but lacks the pair of small round white spots on the posterior half of the 

 mesonotum and the spots on the distal half of the front of the mid femora. 

 These two characters will also distinguish H. unilineata from H. pseudoscutellaris, 

 Theo., recently described from Fiji. H. grantii, Theo., from Sokotra, is not so 

 closely allied. It has distinct white lines on the femora and tibiae, and different 

 thoracic markings. 



Sudan ; N. Nigeria (Baro, 2 Q, Dr. Ingram)-, British E. Africa (Dolo, 1 Q, 

 Dr. R. E. Drake- Br ochnan). 



2. H. (?) pembaensis, Theo. (Aedes), Mon. Cul. II, p. 235 (1901). 



Verrallina pembaensis, Theo., Mon. Cul. V, p. 495 (1910). 



This was described from a single female in bad condition, and must remain of 

 doubtful position until more material can be obtained. The eighth segment of 

 the abdomen seems to be broken off, so that I am not quite sure that it belongs 

 to the Aedes group. What scales are left on the head are flat, and, except for a 

 row round the eye-margins, black. The thoracic scales seem to have been 

 blackish, from the few that are left, and there are a few flat white scales on the 

 scutellum. Abdomen blackish, with small basal lateral white spots. Legs 

 brownish, unhanded. 



Pemba Island. 



3. H. (?) lineata, Theo. {Pseudohncardina), Entomologist, XLY, p. 92 (1912). 

 " cf and Q . Head deep brown, with a median white line and a thin white 



line around the eyes ; proboscis deep brown, with a line of white scales on the 

 basal half. Thorax deep brown, with three thin pale yellow lines, the median 

 one forked around the bare space in front of the scutellum, a thin white line on 

 each side ; two broken white lines on the pleurae and spots. Abdomen deep 

 brown, with traces of apical white bands and apical spots. Legs deep brown, 

 unhanded, femora with a white line beneath, and in certain lights the tibiae pale 

 yellow. Male palpi acuminate, no hair tufts, brown. Length, Q 3*5-4*5, 

 d 4 mm/' 



