LIST OF DIPTERA. " 607 



Helophilus Latro, Barnstorms MSS., fern. Niger, thoracis vittis 

 duabus dorsalibus canis totidemque lateralibus fidvis, scutello 

 fusco margine postico fulvo, abdominis maculis utrinque tribus 

 cano-fulvis, anteiinis piceis, pedibus nigris, tibiis basifulvis, alis 

 cinereis. 



Body black : head clothed with pale tawny down and hairs ; 

 crown beset with black hairs : mouth black : feelers pitchy : eyes 

 dark red, partly black ; the facets on the fore part of the crown ra- 

 ther larger than those elsewhere : chest and breast clothed with 

 short tawny hairs ; chest adorned with tw r o hoary stripes, and on 

 each side with a tawny stripe ; scutcheon shining, pale brown, taw- 

 ny along the hind border: abdomen nearly oval, shining, rather 

 longer and broader than the chest, thinly clothed with short tawny 

 hairs, adorned with three tawny spots on each side ; first pair of 

 spots triangular, very large, their tips on the back hoary ; second 

 pair of spots much smaller, partly occupied by ferruginous marks 

 hoary on the back ; third pair still smaller, tawny on the sides of the 

 abdomen, hoary on the back : legs black, clothed with short black 

 hairs ; shanks tawny at the base ; feet clothed beneath with tawny 

 down ; claws ferruginous, with black tips ; foot-cushions tawny ; 

 hind thighs rather thick ; hind shanks slightly curved ; wings gray ; 

 wing-ribs pitchy ; veins black, ferruginous towards the base ; poisers 

 pale yellow. Length of the body 5 — 5^ lines; of the wings 9 — 18 

 lines. 



Var. j3. Second pair of abdominal spots without ferruginous 

 marks. 



Var. y. Shanks tawny for two-thirds of the length from the 

 base ; middle shanks tawny for two-thirds of their length from 

 the base. 



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



G. Barnston, Esq. 



b. Nova Scotia. From Lieut. Redman's collection. 



Helophilus trilineatus. Eristalis trilineatus, Wied. Auss. Zweif. 

 ii. 168. Syrphus trilineatus, Fabr. SysL Ent. 766, 16. Ent. 

 Syst. iv. 289, 39. SysL Anil. 238, 27. 



a. Port Nicholson, New Zealand. From Mr. Earl's collection. 



b. New Zealand. Presented by Dr. Sinclair. 



c. New Zealand. From Mr. Pelerine's collection. 



d. New Zealand. From Sir J. Bank's collection. 



3H2 



