542 LIST OF D1PTERA. 



Chrysotoxum hortense, Meig. Dipt. iii. 173, 8. Loew, Ent. Zeit. 



Stettin, ii. 160. 

 a. ? From Mr. Children's collection. 



Chrysotoxum Baphyrus, n. s., mas. Flavum, thoracis vittis tribus 

 viridiceneis, abdomine fulvo, dorso ad apicem piceo, antennis 

 fulvis apice piceis, pedibus fulvis, tibiis anticis fiavis, alis lim- 

 pidis. 



Head white, clothed behind with short tawny hairs, bright 

 yellow with a tawny stripe in front : mouth pitchy ; feelers tawny, 

 pitchy towards the tips : eyes brassy red ; their facets nearly alike 

 in size : chest and breast yellow, the former adorned with three 

 brassy green stripes ; disk of the scutcheon tawny : abdomen 

 tawny, slightly ferruginous on the disk, which has a pitchy band ; 

 the hind half of the abdomen is also mostly pitchy : legs tawny ; 

 fore shanks yellow: wings colourless; wing-ribs and poisers tawpy ; 

 veins brown, tawny towards the base and along the fore borders. 

 Length of the body 5 lines ; of the wings 10 lines. 



a. North Bengal. From Miss Campbell's collection. 



Chrysotoxum derivatum, n. s., mas. Nigrum, capite flavo vittis 



duabus nigris, thoracis lateribus flavo variis, scutello fusco basi 



flavo, abdominis vittis tribus interruptis duabusque integris 



flavis, apice maculis tribus flavis ornato, pedibus jiavis femori- 



y v bus nigris, alis subcinereis ad costamfuscis. 



Body black : head yellow, as broad as the chest, clothed be- 

 neath with tawny hairs, adorned with a black stripe in front : eyes 

 dark reddish bronze, downy ; facets very small : mouth and feelers 

 black : v chest clothed with black hairs, adorned with an interrupted 

 yellow stripe on each side ; sides of the breast also varied with yel- 

 low : scutcheon brown, with a yellow band on the fore border : ab- 

 domen nearly oval, a little longer and broader than the chest, 

 adorued with five yellow arched bands, of which the first, the second 

 and the fourth are slightly interrupted, the third and the fifth are 

 whole ; there are also three large yellow spots at the tip of the ab- 

 domen : legs yellow, clothed with short tawny hairs ; hips and 

 thighs black, the latter yellow towards the tips : wings slightly 

 gray, brown along the fore borders ; wing-ribs and veins piceous ; 

 poisers tawny. Length of the body 3i lines ; of the wings 8 

 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnston, Esq. 



