202 MOSQUITOES OF NORTH AMERICA 



Obioinai. Descbiption of Deinocbbites canceb: 



Thorax blackish, brown towards the scutellum, with scattered bronzy-black 

 scales. Abdomen blackish-brown, with deep umber-brown scales; venter paler. 

 Legs brown with bronzy reflections; coxae pallid; femora yellowish at the base and 

 underneath. Ungues of the female equal and simple. 



?. Head blackish-brown, with greyish flat curved scales, somewhat creamy 

 coloured towards the front, with scattered brown forked upright scales; antennae 

 bright brown, basal joint yellowish, base of the second joint the same, fourteen 

 jointed, second joint very long; palpi covered with chocolate-brown scales; clypeus 

 bright chestnut-brown; proboscis blackish-brown, darkened and expanding towards 

 the tip, paler at the base; eyes deep purplish-black. 



Thorax black, brown towards the scutellum in some specimens, with scattered 

 curved flat bronzy-black scales, with deep chestnut-brown to black bristles; two 

 rows of bristles down the dorsum of the mesonotum; scutellum brown, with dark 

 scales and chestnut-brown to black bristles; metanotum deep purplish-black; pleurae 

 chestnut-brown. 



Abdomen steely-black, entirely covered with umber-brown and dark brown scales, 

 the posterior borders of the segments with small golden-brown bristles; venter 

 brown, thickly clothed with paler scales. When held in some lights the abdomen 

 has an ochraceous tinge in parts. 



Legs covered with brown scales, which give them bronzy-yellow reflections in 

 some lights; coxae pale, with a row of long bristles above each; femora beneath deep 

 yellowish-brown; hind metatarsi a little shorter than hind tibiae. Ungues equal and 

 simple, fore and mid rather long, hind small. 



Wings with brown scales, those on the second long vein and its fork clavate, those 

 on the remainder rather more truncated and with lateral long club-shaped ones in 

 addition, except on the stem of the fourth and base of the fifth veins; first sub- 

 marginal cell longer but about the same width as the second posterior cell, the cell 

 two and a half times the length of the stem, its base nearer the base of wing than 

 that of the second posterior cell; stem of the second posterior cell much longer than 

 that of the former cell, about two-thirds the length of the cell; posterior cross-vein 

 longer than the mid cross-vein, about one and a fourth times its own length distant 

 from it 



Halteres with deep ochraceous stem and blackish knob. 



Length. — 3.5 to 4.2 mm. 



HaMtat. — Jamaica (Dr. Grabham, 8. 2. 1900, 24. 11. 1899) ; St. Lucia (Otto Galgey, 

 21. 12. and St. George Gray, 19. 7. 1899). (O & Gl.) 



Time of capture. — St. Lucia in July and November; Jamaica In October. 



Observations. — Dr. Grabham sends a few 5's of this species from Jamaica, with the 

 following note. " Crab-hole form along the sea-coast; the water in the holes is 

 brackish." 



A rather obscure species which seems to be abundant in the West Indies, evidently 

 appearing at dusk, as Mr. Galgey places the time of capture 7 p. m. on his labels. Dr. 

 Grabham bred this species from larvae from pools along the Spanish Town Road 

 and crab-holes near the seashore. It is the prevalent form during the rainy season, 

 and is very abundant at Kingston, Jamaica. 



The structural peculiarity of the antennae in having the greatly elongated second 

 joint is taken as the distinguishing feature of the new genus, in which I propose to 

 place this species. 



Obiginai, Descbiption of Bbachiomyia magna: 



Brown; thorax rather shiny; abdomen unhanded, paler beneath; legs rather long 

 and thick, unhanded; antennae considerably longer than the body. 



$. Head brown with narrow, grey, curved scales, all pointing forwards, with 

 numerous upright, ochraceous, forked scales, rather broad and crenulated at the 

 summit; two black bristles projecting between the eyes and several overhanging 

 them; eyes deep purplish black; clypeus fawn-coloured, nude; proboscis brown, mod- 

 erately long, prominently curved downwards; antennae very long and filiform, longer 

 than the whole body, brown, basal joint bright ochraceous, second to fifth joints 

 covered with small brown scales, especially thick towards their base, the second joint 

 long, the following gradually becoming shorter towards the apex. Palpi short, 

 4-]olnted, covered with brown scales, the basal joints the smallest, a few black hairs 

 also on the joints. 



Thorax shiny brown, with sparse, narrow, curved, small, greyish-brown scales and 

 short deep-brown bristles; scutellum chestnut-brown with narrow, curved, greyish- 

 brown scales; metanotum nude, deep brown, except at the base, where It Is chestnut- 

 brown; pleurae pale ochraceous, with pale brown mottling and black bristles. 



