GENUS MEGARHINA 277 



16. MEGARHINA FEROX, (Wied.). 



{Culex ferox, Wied., «' A. Z. 1.," p. 1). 



Caudal adornment showing no marked contrast of colour or 

 any very distinct tufts beyond a few yellow hairs. Last two 

 hind tarsals white in both sexes, and those of second and third 

 joints of fore legs in $ only. Thorax chestnut with azure 

 adornments. 



Head chestnut, with pale blue eye margins ; antennae brown, with 

 frosty tomentum on basal, and brown scales on second joint ; palpi 

 and proboscis deep purple to black. 



Thorax bright chestnut-brown with a median azure-blue stripe, an 

 azure-blue band laterally and a patch over each wing and on the pro- 

 thoracic lobes ; scutellum deep purple in the middle, pale azure-blue 

 and pale apple-green on the lateral lobes in the J ; no medium azure- 

 blue band in the 3' > nor is the middle of the scutellum deep purple. 

 Abdomen steel-blue, the basal segment bright bluish-green, some of the 

 apical segments with apical yellow bands ; venter and sides partly dull 

 golden yellow ; anal segment with numerous yellow hairs. Legs metallic 

 blue and purple, last two tarsi of the hind legs in $ and ^ white and 

 the first two tarsi in the fore legs, but apparently not in the ^ ; fore 

 and mid ungues of the <y unequal, the larger uniserrated ; in the ? 

 equal and simple. (" Monog.") Length, — 5 lines. 



Habitat. — Brazil; Georgia. 



17. MEGARHINA LONGIPES, Theob. (Monog., p. 241). 



Apex of abdomen armed with dense yellow hairs, but with 

 no contrasted colouration or distinct caudal tufts. 



The second, third, and fourth fore, and middle tarsal joints 

 yellowish-white ; the hind tarsi purplish-black, with the apex 

 of the fourth joint white. Thorax bronzy above, green laterally. 



? . — Head green in front, golden brown behind ; palpi metallic green ; 

 proboscis coppery. Prothoracic lobes pale blue ; scutellum pale brown, 

 blue on lateral lobes ; pleurae brown, with pale gold patches. Abdomen 

 bright olive-green, the first segment pale blue, and the apex yellow ,- 

 venter golden-scaled. Legs deep steely blue, with the bases of the 

 femora yellowish. "Wings dusky on the costa, with some purple scales 

 on some of the long veins ; halteres pale, with fuscous knob. Length. — 

 8 mm. (of mid legs 18 mm., of wings 9 mm.). 



Habitat. — Mexico. 



This species, and also Walker's M. inornata, may possibly belong to 

 Mr. Theobald's new genus Toxorhynchites, as in both it is uncertain 

 whether the palpi of the ? specimens available are short or broken. 



