II 
SUB-FAMILY TOXORHYNCHITIN^, Theobald 
Toxorhynchites marshallii, Theobald 
FEMALE. Head. scales bronzy-blue at the sides and between tin- 
eyes; bronzy-green on occiput, black along the nape. Palpi of four 
segments; sub-apical and apical segments minute; clothed with 
brilliant azure blue scales. Antennae black; first segment black it 
the base dorsally, grey at the apex with a patch of dull white scales 
pubescence grey ; hairs black. Proboscis azure blue. Thora i Pr< 
thoracic lobes dull azure blue, with bronzy-green reflections; me-o 
thorax black with brilliant bronzy-green scales; scutellar scales rich 
bronzy-yellow ; and there are patches of the same coloured scales near 
the base of the wings; pleurae almost covered with dull white scales 
Abdomen azure blue with rich violet reflections ; penultimate segment 
with brilliant ruby reflections ; anterior half of anal tuft black, the re-a 
rich orange ; there are white lateral spots to the first, second, third and 
fifth segments; venter blue with white scales on the fifth segment 
Legs dark violet; coxae with some white scales ; mid and hind femora 
dull bronzy-yellow beneath with white reflections, in some lights, and 
in the hind tibiae this colour extends to the upper surface on the 
inside; first segment of mid and hind tarsi with a dusky white band , 
second segment almost entirely white forming a distinct broad band ; 
second tarsal segment to fore legs with an inconspicuous basal band 
of dusky white scales; fore, mid and hind ungues equal and simple 
Length 9 to 10 mm., exclusive of the proboscis. 
A description of the ? has been given as it has not, 
apparently, been hitherto described.* Of the 22 specimens collected, 
only one is a male, the rest are all females. 
Localities: — Tshumbiri and Coquilhatville. 
Circumstances of capture: — Our thanks are due to the Rev and 
Mrs. Billington, members of the American Baptist Missionary Union 
stationed at Tshumbiri, for a series of these mosquitoes collected in 
March, April, June and November. They have also supplied the 
following notes on the bionomics of these mosquitoes. “ The adults 
fly with a characteristic loud humming; they were frequently caught 
in a European's house. The larvae were found in a metal water tank 
Mono. Culicid., vol. 3, p, 121, 1903. 
