484 GNATS OR MOSQUITOES — CHAPTER XIV 



with white scales ; forceps of the $ , small, yellow. Legs deep brown, 

 the femora, and in a less degree the tibiae, showing the yellow ground 

 colour on the under side. Wings nearly hyaline ; veins uniformly brown 

 scaled. Length. — 3 mm. 



" Habitat. — The coast of St. Vincent, West Indies, and on the hills 

 at 1,000 ft." 



9. iEDES PERTURBANS, Williston. 



Abdomen varying from yellow to brown, unbanded. Thorax 

 generally yellow, unadorned. Tarsi unbanded (?) brown ; general 

 colouration yellowish. 



Description from Williston, "Trans. Ent. Soc. Lond." 1896, p. 271: 

 " (J and $ . — Head black ; antennae brown ; plumosity of the <? , long, 

 abundant and black ; terminal joint as long as the seven or eight pre- 

 ceding it together, and clothed with short hair ; in the ? , the joints are 

 slenderer, and the end one is no longer tlum the two preceding ones com- 

 bined ; the verticil;^ of moderate length ; proboscis black, as long as the 

 abdomen ; palpi brown. Thorax yellow ; inesonotum a little darker, 

 and clothed with brown scales. Abdomen yellowish, j-ellowish-brown, or 

 brown ; the terminal segment and the hypopygium brown or blackish, and 

 clothed above with brown scales. Legs brown or blackish ; the femora 

 for the most part yellow, with grey or purplish reflections in some lights. 

 In some specimens, the tibiae largely yellowish beneath the tomentum. 

 Veins of wings uniformly brown scaled. Length. — 4'5 mm. 

 ''Habitat. — The island of St. Vincent, West Indies." 

 Some specimens sent me by Dr. Lutz from San Paola, South America, 

 labelled " wood mosquito, probably sp. n. of group ^•Edes," corresponded 

 entirely to Williston's description, but the specimens, unfoi-tunately, 

 arrived in a terribly damaged condition. The body was clothed with 

 mixed brown and yellow scales. Mr. Theobald believes the species to be 

 identical with his Wi/eomyia Grayii, in which case the latter would stand 

 as W. per turban 8 (Williston). We have not seen the type. 



10. ^DES NIGER, Theobald (Monog. 11, p. 237). 



Abdomen uniformly black. Thorax nearly black, paler on the 

 pleursB and at the roots of the wings. Anterior fork-cell barely 

 longer than the posterior, its stem two-thirds as long as its 

 cell. 



J . — Head and appendages dark brown, the former clothed with dusky 

 Hat scales, with three dark bristles projecting forwards and inwards on 

 each side. Legs dark brown, except on the coxte which are pallid, A\dth 

 very small simple tarsal claws. Halteres, with white stem and black 

 knob. Length. — 2 mm. 



Habitat. — Old Calabar, West Africa. 



