APPENDIX 
in 
Genus Stegomyia, Theobald (1901) 
{Mono. Culicidae, Vol. I) 
Differs from Culex, in that the head and scutellum are both covered entirely with flat scales, 
that former having a few upright-forked ones as well. Palpi short in the 9 ; long in the $ , 
apparently five-jointed in the latter, and generally nude. Abdomen banded or plain, but with 
lateral spots. Fork-cells of the wing rather small. Eggs usually laid singly, not in rafts. 
V. Stegomyia fasciatus. Fabricius (1805) 
S. taeniatus. Wiedemann (1828), etc., etc. 
(Syst. Jut/. 36-13) 
This common mosquito, which occurs between latitude 30 0 N. and 30 S.,. is evidently 
abundant in West Africa, specimens in this collection coming from Old Calabar and Bonny. 
They were captured chiefly in April, May, and July. The majority are rather small specimens, 
and some of them show the abdominal banding involving both sides of the segments. This 
species occurs right into Central Africa, and is, perhaps, the commonest tropical and sub-tropical 
mosquito, biting during the day as well as at night. 
It can easily be told by the thoracic ornamentation ; the insect is very dark-brown to 
black, the bases of the abdominal segments with creamy-white bands and white lateral spots, the 
legs basally white banded, and the thorax with tawny to brown tomentum (scales), with a silver 
curved line on each side, two narrow parallel ochraceous or yellow lines in the middle and some 
silvery-white scales on the scutellum, forming a line of three spots. The majority of the specimens 
in this collection show a pure white line of scales on each side of the space in front of the 
scutellum, which I have not noticed so plainly before. 
VI. Stegomyia africanus. Theobald 
{Mono. Culicidae, Vol. I) 
Two 9 's ; one from Duke Town, one from Bonny ; taken in April and May. 
It is very like S. fasciatus Fab., but has two lateral oblique silvery side bars to the meso- 
thorax, no central ornamentation, except a silvery spot in front, and the second tarsal joint of the 
hind legs is nearly all white. Abdomen generally quite devoid of banding, but one specimen shows 
faint traces of basal fascia. Giles' S. gubernatoris, from India, is very similar but quite distinct. 
Th is mosquito occurs in Central Africa as well as on the West Coast. 
VII. Stegomyia irritans. Nov. sp. 
(Fig. 2, PI. I) 
Head black and grey, the black forming a triangular patch on each side. Thorax chest- 
nut-brown, with deep-brown, and bright scanty golden scales. Abdomen dark-brown, with 
narrow, basal, white bands. Legs dark-brown, unhanded. 
9 . Head covered with flat, creamy, grey and black scales, the black ones forming a more 
or less triangular patch on each side and a small area in the middle, a few scattered, black, upright- 
fork scales over the occiput, around the eyes a narrow line of curved, golden scales ; clypeus 
