GENUS MEGAEHINA 275 



12. MEGARHINA RUTILLA, Coquillet. 



(Canadian Entomologist, p. 43 [1896]). 



Caudal adornment yellow and black. Tarsi with the second 

 joint and the base of the third of the fore and middle tarsi, with 

 the fourth joint and the base of the hind tarsi, white. Thorax 

 brown with golden and violet scales, and pale yellow lateral 

 margins. 



From original description : — 



<?. — Head black, with the occiput blue in centre, white next the eyes; 

 antennae brown, the first joint covered with blue scales on the outer side, 

 and on the side silvery-white ; proboscis and palpi black, covered with 

 blue, gold, and white scales. Humeral angles of thorax and two large 

 spots on the pleurae gold coloured ; sciitellum blue-black and golden- 

 scaled. Abdomen black, with blue scales, becoming violet at the tip, 

 that on the lateral margins golden, the venter blue-scaled mixed with a 

 few golden ones. Legs black, with mixed blue, violet and golden scales, 

 the coxae and apices of the femora entirely golden ; one claw of each of 

 the fore and middle legs toothed, the others simple. Wings hyaline, 

 costal margins and veins brown, the scales blue and violet. 



?. — As in the $, except that the 1st joint of the antennae is 

 destitute of the blue and silvery scales ; 2nd, 3rd, and base of the 4th 

 joints of the fore and mid tarsi white, claws simple. Length. — 7 to 10 

 mm. 



Habitat. — North Carolina and Georgia. 



13. MEGARHINA PORTORICENSIS, Von Eoder. 



(Ent. Zeit. Stetin, p. 337 [1885], Von Roder ; Trans. Ent. Soc, Lond., p. 271 

 [1896] Williston.) 



Caudal adornment steel-blue and white ; penultimate joint of 

 the hind tarsi silver-white. Thorax bay-brown, with green-gold 

 scales. Abdomen, legs and palpi steely brown. 



$ . — Head deep brown, with white eye borders and lateral spots, 

 blue spotted in front, and with a yellow frontal tuft ; proboscis steely- 

 black ; palpi purple. Thorax bronzy-green with an azure patch in front 

 of wings ; pleurae dark brown with a large silvery patch above the coxae. 

 Abdomen brilliant steel-blue, with creamy lateral patches. Legs steel- 

 blue, the femora golden below. Wings yellowish with violet scales at 

 the base. 



$ . — Head bronzy with blue eye borders ; palpi intense black, with 

 a few white scales, and the apices of the joints mauve. Abdomen green 

 at the base, purple-blue at the apex, with white, apical, lateral spots. 

 Wings with azure-blue scales towards the base, mauve ones on the costa 

 and on I, and II, towards the middle. Length. — 8 mm. ? , 9 mm. <?. 



Habitat. —Geovgia., St. Domingo, Para, Porto Rico, St. Vincent. 

 CoquiUett also gives Benoit, Mississippi in July. 



