AEDE8 NIGER 673 



lateral flat-scaled areas with a black spot behind the eyes enclosed in a loop of 

 white. Palpi brown, with white tips. Scutellum with yellowish falciform scales; 

 pleurae and coxae with some whitish bars and specks. Halteres entirely pale yellow, 

 densely scaled. 



This species closely resembles 0. impeltens, Walker, in ornament, but differs in 

 having snowy apical lateral spots on all but the last abdominal segment; 0. im- 

 pellens having simply basal bands, besides which, of course, the dense scaly armature 

 of the wing, though the scales are rather narrow for the genus, is alone sufficient to 

 distinguish them. Rather over medium size. 



Haiitat. — Antigua. July 21st, 1901, from a collection sent by Dr. Forrest. 



The following is an abstract of the table : 

 I. Species whose proboscides exhibit a paler band. 



C. The scales of the wings uniformly of one colour, or at any rate not brindled. 

 a. With the abdominal segments basally pale banded. 

 i. With the tarsi basally pale banded. 



9. T. niger, sp. n. Wing black. Band of proboscis sharply de- 

 fined, rather narrow, placed at the middle. Abdominal 

 segments sooty, with narrow white bands of uniform width. 

 Tarsal banding extremely minute, especially on distal 

 joints. Thorax sooty-grounded, with deep golden-brown 

 curved scales, rather paler at the sides behind. A very 

 sombre species, with apical lateral spots to the abdominal 

 segments, not visible from above, and the venter impure 

 white, with narrow black bands across the apices of the 

 segments. 



Obiginai. Description or Culex poktoeicensis : 



$. Head dark, with a narrow median line of ochraceous curved scales, light forked 

 scales upon the occiput, and reaching well up toward the vertex; the median curved 

 scales followed by light flat scales and a narrow stripe of dark flat scales on the 

 side; antennae dark brown, vertlcels and pubescence brown, basal joint brown, with 

 a few flat lighter brown scales; palpi dark brown, a few white scales at the tips; 

 proboscis very long, dark brown, with a minute white band, at times merely a trace, 

 near the middle; clypeus dark brown; eyes brown and garnet. 



Thorax dark brown; prothoracic lobes with light spindle-shaped scales; meso- 

 notum sparsely covered with small, slender curved golden brown scales on the sides, 

 the median portion partly denuded, but some dark brown spindle-shaped scales 

 remaining; scutellum dark, with light, slender curved scales; pleura dark brown, 

 with numerous small patches of flat, white scales; metanotum dark brown. 



Abdomen dark, covered with dark brown scales; very narrow basal white bands, 

 and small basal white lateral spots; venter mostly white scaled. 



Legs. Coxae and trochanters dark, with light scales; femora dark brown dorsally, 

 almost white ventrally, more markedly so on the hind legs; tibiae brown, as are all 

 the remaining joints, but on the hind legs the metatarsi, the first, second, third and 

 sometimes the fourth tarsal joints have minute white basal spots, not amounting to 

 bands; on the mid legs the spots appear on the metatarsi, first and second tarsal 

 joints, and on the fore legs there are minute yellowish spots at the tips of the tibiae, 

 and base and apex of the metatarsi, the remaining joints being brown. Fore and 

 mid ungues uniserrate. 



Wings brown, with brown scales; cells rather short; the first submarginal a little 

 longer and narrower than the 2nd posterior cell, the stem of each about two-thirds 

 as long as the cells, the bases nearly in a line; the cross veins are all nearly the 

 same length, mid and supernumerary meet, and the posterior cross-vein Is distant 

 about its own length from the mid; halteres have light stem and fuscous knob. 



The male greatly resembles the female; the palpi are long, with golden brown 

 plumes, and four narrow white bands; fore and mid ungues biserrate. 



Length, 3.5-4 mm. Taken Aug. 15, 1905. Habitat, San Juan, Porto Rico. 



Described from several specimens sent by Dr. L. G. de Queveda, Cent. Surg. 

 U. S. A., which were taken at the Quarantine Station, Yellow Fever Hospital and 

 Quarters; it at first glance suggests C. twniorhynchus minus the hind legs, and 

 probably lies near that, but is evidently distinct. 



Descbiption of Femaxe, Mam!, and Labva of Aedes nioeb: 



Female. — Proboscis rather long, slender, cylindrical, the labellse conically 

 tapered ; vestiture black, a narrow white ring before the middle ; setae minute, 

 black, those on the labellse more prominently outstanding. Palpi short, rather 



