618 LIST OF DIPTERA. 



short tawny and black hairs ; shanks pale yellow for half the length 

 from the base ; foot-cushions and claws tawny ; tips of claws 

 black : wings colourless, tinged with brown in the disk ; wing-ribs 

 and veins pitchy, the latter partly ferruginous, black along the fore 

 border; poisers pale yellow. Fern. — Head clothed on the crown 

 with black hairs, covered with tawny down between the crown and 

 the feelers. Length of the body 5^ — 6 lines ; of the wings 11 — 12 

 lines. 



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



G. Barnston, Esq. 



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



Eristalis pervagus, Harris, Cat. Ins. Massachusetts. Fem. — 

 Niger, scutello cyaneo, abdominis segmentorum seeundi et quarti 

 marginibus posticis flavis, antennis pedibusque pieeis, femoribus 

 posticis tibiisque basifulvis, alis limpidis basi discoque fuscis. 



» Body black, shining : head covered with white bloom, clothed 

 with white down ; a black stripe along the front : mouth black : 

 feelers pitchy ; bristle tawny, hairy : eyes nearly black ; their facets 

 very small : chest thickly, but partially clothed with short pale taw- 

 ny hairs; scutcheon blue: abdomen obconical, clothed with pale 

 tawny down, a little broader but not longer than the chest ; hind 

 borders of the second aud of the fourth segments pale yellow : legs 

 pitchy; shanks and hind thighs tawny towards the base; feet 

 clothed beneath with tawny down ; foot-cushions and claws tawny ; 

 tips of the claws black : wings colourless, brown at the base ; a 

 large irregular brown spot extends from the fore border more than 

 half across the wing, and includes the cross-veins ; wing-ribs and 

 veins pitchy ; veins tawny towards the base ; poisers tawny. Length 

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



a. United States. Presented by the Entomological Club. 



b. ? 



Eristalis dimidiatus, Wied. Auss. Zweif. ii. 180, 41. 

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

 G. Barnston, Esq. 



Eristalis transversus, Wied. Auss. Zweif. ii. 188, 51. Macq. 

 Dipt. Exot. ii. 33, 4, pi. 9,/. 12. 



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



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



G. Barnston, Esq. 

 c Ohio. Presented by the Entomological Club. 



