582 MOSQUITOES OF NORTH AMERICA 



with the creamy patches of scales broken in the middle, on the fourth and fifth seg- 

 ments the patches forming two quite separate lateral spots; last segment mostly 

 black; ventrally covered with pale yellow and brown scales with a few black marks. 



Wings with the veins covered with black and white scales; a distinctive character 

 is that the base of the third longitudinal where it meets the cross-veins forms a very 

 small deep black spot. Halteres pale testaceous. 



Legs banded and speckled with yellow scales; fore femora black, with a pale ring 

 near the apex and with scattered yellow scales, pale underneath; knee white; tibiae 

 black, spotted with yellow scales; metatarsus with a basal and median band of 

 yellow; first two tarsi basally white banded, remainder black; in the mid legs the 

 markings are the same, but there is a trace of banding on the third tarsus, and the 

 femora are whitish beneath except at the apex; in the hind legs all the tarsal joints 

 are basally banded and the ring of the femora Is more distinct, whilst ventrally they 

 are like those of the mid legs. Mid and hind ungues equal and simple. 



Length. — 5.5 mm. 



Habitat. — ^Jamaica (Grabham) (8. 2. 1900). 



Time of capture. — December. 



Observations. — A very distinct species, easily recognized by the black speck on the 

 wing, the curious banding and mottling of the legs and the adornment of the abdo- 

 men. 



It was bred by Dr. Grabham from larvae collected along Spanish Road, Kingston. 



Obiqinal Description or T^nioehynchtjs walsinghamii: 



Head brown with grey and brown scales; proboscis banded; palpi brown white at 

 apex. Thorax brown with golden brown scales showing some ornamentation. Abdo- 

 men deep brown with median single and double pale scaled areas on the segments 

 and lateral pale areas. Legs brown with narrow basal white bands to the tarsal seg- 

 ments, tibiae with spots and the femora with a white ring towards the apex. Wings 

 with mottled scales. 



?. Head brown with narrow-curved grey scales, brown and pale brown upright 

 forked ones, a border around the eyes of small pale narrow-curved scales, flat black, 

 then creamy lateral scales. Proboscis deep brown with a pale creamy median area 

 not extending completely around the proboscis to make a band; palpi deep brown, 

 with black chaetae and pale scales apically; antennae pale brown; clypeus deep 

 brown. 



Thorax deep brown, with narrow-curved golden scales, showing traces of orna- 

 mentation and becoming paler in front of the scutellum and over the roots of the 

 wings; chaetae blackish; scutellum pale brown with narrow-curved pale scales; 

 metanotum brown; pleurae brown with dense flat white scales. 



Abdomen brown with median pale creamy scaled areas, on some segments divided 

 into two pale spots, and extending the whole length of the segments, with lateral 

 white lines of scales extending all down the segments; border-bristles brown; venter 

 pale scaled. 



Legs brown with the femora yellowish at the base, a white apex and a white ring 

 towards the apex; tibiae deep brown with white spots, flrst three fore and mid tarsal 

 segments with narrow basal white bands; in the hind legs all the tarsals have narrow 

 basal white bands; fore and mid ungues equal, simple, rather large; hind equal, 

 simple and small. 



Wings mottled with creamy and brown scales, the scales somewhat denser at the 

 base of the third vein; first sub-marginal cell slightly longer and much narrower than 

 the second posterior cell, its stem very nearly half as long as the cell. Its base nearer 

 the apex of the wing; stem of the second posterior, which is broad and long, about 

 half the length of the cell; posterior cross-vein rather more than twice its own length 

 distant from the mid. 



Length. — 4.5 mm. 



Habitat. — Runaway Bay, Jamaica (Lord Walsingham). 



Time of capture. — April. 



Observations. — Described from a perfect female taken by Lord Walsingham. It 

 bears a very strong resemblance to T. fasciolatus, Arribalzaga, but can be told by the 

 mottled wings on which the scales are narrower, by the different venation, especially 

 In the much larger size of the second posterior cell and by its stem being much 

 shorter than in fasciolatus, also by the abdominal adornment. 



Description of Female, Male, and Larva of Psorophora jamaicensis : 



Female. — Proboscis moderate, cylindrical, uniform, labellse conically tapered ; 

 vestiture of flat black scales, a broad band of yellowish white ones in the middle 

 irregularly limited, with a few black scales intermixed; setae minute, curved, 

 black, those on labellse more prominently outstanding. Palpi short and thick, 



