4'24 GNATS OR MOSQUITOES — CHAPTER XIII 



band on the tibio-tarsal articulaMon of all the legs, though the 

 fore and raid pair are otherwise unhanded. Thorax unadorned, 

 clothed with dark bronzy scales. Abdomen, with the last seg- 

 ments yellowish, deep golden-brown in front, with creamy, lunate 

 basal bands, and with lateral spots on the second to seventh 

 segments (vide Plate xvi, fig. 16a). 



(?. — Head deep brown with linear curved, and erect forked scales, 

 alike of a golden tint, yellow orbits, and flat-scaled lateral patches ; 

 palpi brown, with the last joint clubbed, and the apex of the next joint, 

 and a band half way down yellow (Mr. Theobald can only detect two 

 joints in the appendage) ; antenme and proboscis, golden-brown. Pleurae 

 dark grey and rich ochreous, with a patch of creamy scales. Ventral 

 segments, golden, with narrow black hinder borders. Legs yellowish- 

 brown ; tarsal claws of fore and mid legs unequal with an accessory 

 tooth (Plate vi, fig. 16). Halteres pale with fuscous knobs. Length, — 

 6 mm. 



Habitat. — Bonny, West Africa ; July. 



61. CULEX DORSALIS, Meigen. 



(Syst. Beschr. iv, 242, 18, et i, 2, 3, Meigen ; Dipt. Scand. ix, 3464, Zetter- 

 stedt ; Isis (1831), 1203, 50, Ruthe ; Fn. Austr. ii, G27, Schiuer ; Dipt. 

 Near. 325, Van der Wulp ; Bull. Soc. Ent. Ital. p. 246 (1896), Ficalbi ; 

 Ent. Mo. Mag. p. 228 (1895), Austen.) 



Tarsi dark brown, with rather broad yellow bands on the 

 tibio-tarsal and tarsal articulations, except the last tarsals, which 

 are dark. Thorax brown, with bright tawny-red and pale creamy, 

 curved scales forming two lines on the mesothorax, and 

 also forming a line in front, and a patch before the scutellum. 

 Abdomen brown, with a few scattered pale scales, and creamy 

 basal bands, a central line of pale yellow scales and pui*e white 

 lateral spots. Ungues equal and simple in the ? . Wings with 

 numerous white scales, intermixed with the darker ones, especially 

 along the costa. 



$ . — Head brown, with pale yellowish curved, in the middle, upright 

 pale forked, and ochreous flat scales at the sides ; antennie brown, 

 basal joint bright ferruginous, basal and next few following joints with 

 creamy scales ; palpi yellowish-brown, with brown and dull creamy 

 scales, especially numerous at the apex ; proboscis brown, darker towards 

 the tip. Pleurae brown, with numerous whitish scales. Legs clothed 

 with mixed yellow and black scales, the latter most numerous towai-ds 

 the apices of the long joints, and with white knee-spots. Venter, witli 

 scattered white scales. Length. — 5 to 5'5 nnn. 



Habitat. — Northern Europe, including East Coast of England, where 



