Genus Nyssorhynchus. 
O 
59 
Nyssorhynchus pretoriensis. Theobald (1903). 
Mono. Culicid., III., 99 (1903). 
Pretoria; Natal. 
Additional locality Leysdorp, Transvaal (Dr. Copland). 
Type in the British Museum. 
Nyssorhynchus tjbani. Patton (1905.) 
Anopheles ( Nyssorhynchus ) tihani , Patton (1905). 
Journ. Bombay Nat. Hist. Soc., Nov. 2, 629 (1905). 
Palpi, three white bands, sometimes four, remainder black. 
Thorax black with silvery mottling with many light curved 
scales. Legs banded, hind leg has 2J-2J segments pure white. 
“ 9 . Head black with silvery dots here and there ; occiput and 
nape are covered with black, upright 
forked scales. Scattered about are 
many white spindle-shaped scales. A 
tuft of light hairs spread over the 
clypeus. Palpi are black, with three 
white bands, including the apex, the 
bands are arranged as follows:—A 
narrow white band is situated towards 
the 1 base, a broader band about the 
centre and an equally broad band at 
apex. There is sometimes a narrow 
black band dividing the apical band 
into two. Proboscis dark brown and 
longer than the palpi, clypeus is black. 
Antennae dark with light and dark 
hairs, basal segments are globular and 
have a few white scales on its inner side. 
Thorax : prothoracic lobes are black 
with long light curved hairs, dorsum of 
thorax is covered with light and dark 
scales, with many spindle-shaped scales. 
The dorsum has a general silvery appearance. Scutellum is dark 
with a row of black bristles and scales. Metanotum is dark, 
halteres dark with a few minute flat scales. 
Abdomen is covered with black hairs, there are a few scales 
on the last abdominal segment.* 
Fig. 21. 
Anopheles tibani . Patton. 
S and 9 palp (after Patton). 
