1120 LIST OF DIPTEEA. 



tawny ; veins pitchy ; longitudinal veins straight ; lower cross-vein 

 oblique, straight, parted by less than twice its length from the mid- 

 dle cross-vein, by five times its length from the tip of the fourth lon- 

 gitudinal vein, and by twice its length from the tip of the fifth lon- 

 gitudinal vein ; poisers white. Length of the body l£ line; of the 

 wings 2\ lines. 



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

 G. Barnston, Esq. 



Chlorops perflava, Barnstorms MSS. Flava, verticis macula picea, 

 thorace nigra trivittato, abdomine supra antennisque fulvis, palpis 

 pedibusgue Jlavis, alis limpidis. 

 Body bright yellow : a triangular pitchy spot on the crown : eyes 

 pitchy : sucker and palpi yellow : feelers tawny, much shorter than 

 the face; third joint conical, much longer than the second, pitchy 

 above and on the outer side ; bristle black : chest adorned with three 

 broad black stripes ; the side pair shortened in front: abdomen oval, 

 not longer than the chest, somewhat tawny above : legs yellow, 

 thinly clothed with short pale hairs : wings colourless ; wing-ribs 

 tawny ; veins pitchy, tawny towards the base ; longitudinal veins 

 straight ; lower cross-vein straight, upright, parted by thrice its 

 length from the middle cross-vein, by ten times its length from the 

 end of the fourth longitudinal vein, and by four times its length 

 from the end of the fifth longitudinal vein ; poisers yellow. Length 

 of the body 1 line ; of the wings 2 lines. 



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

 G. Barnston, Esq. 



Chlorops vicaria, n. s., fem. Fulva, verticis macula thoracisque 

 vittis tribus nigris, scutello flavo, pectoris maculis nigris, abdo- 

 minis disco piceo, palpis antennisque nigris, pedibus fulvis, alis 



Body tawny, shining : a large black spot on the crown : eyes 

 pitchy : palpi black : feelers black, shorter than the face: third joint 

 nearly triangular, hardly longer than the second ; bristle about 

 twice the length of the third joint : chest adorned with three broad 

 black stripes; side pair interrupted ; some black marks on the breast ; 

 scutcheon pale yellow : abdomen obconical, shorter than the chest, 

 its disk mostly pitchy: legs tawny: wings colourless; wing-ribs 

 tawny ; veins black, tawny towards the base ; lower cross-vein very 

 oblique, curved outward at the upper end; parted by twice its 

 length from the middle cross-vein, by more than eight times its 

 length from the end of the fourth longitudinal vein, and by more 



