612 LIST OF DIPTERA. 



with short tawny hairs ; two large dull tawny spots occupying the 

 sides of the base and almost meeting on the back: legs tawny, 

 clothed with short tawny hairs ; hind thighs and hind shanks pitchy ; 

 claws and foot-cushions tawny ; tips of claws black : wings colour- 

 less; wing-ribs pitchy ; veins tawny, pitchy towards the tips ; poi- 

 sers pale tawny. Length of the body 6J — 7 lines ; of the wings 

 13— 14 lines. 



Var. /3. Thighs and hind feet pitchy. 

 a. Sierra Leone. Presented by the Eev. D. F. Morgan. 



Eristalis Androclus, n. s., fem. Niger, thoracis vittis qualuor canis, 

 scutello ceneo margine fulvo, abdomine angulis duabus marginis 

 lateralibus fulvis, antennis pedibusque nigris, tibiis basi fiavis, 

 alis subcinereis fusco-fulvo venosis. 



Body black : head clothed with dark tawny hairs ; front pro- 

 minent, covered on each side with tawny down : mouth black : feel- 

 ers black ; bristle tawny, with a black tip : eyes red ; their disks 

 partly black ; all the facets very small : chest and breast covered 

 with gray bloom, clothed with short tawny hairs ; chest adorned 

 with four dull hoary stripes ; scutcheon slightly bronzed, its border 

 tawny : abdomen nearly oval, clothed with short tawny hairs, 

 broader and a little longer than the chest, adorned with a large an- 

 gular tawny spot on each side towards the base : legs black, clothed 

 with short tawny hairs; thighs clothed with short black hairs; 

 shanks yellow towards the base ; foot-cushions and claws tawny ; 

 tips of claws black : wings slightly gray, brownish tawny along the 

 veins, with the exception of the tips and of the hind borders ; 

 a small brown spot on the middle of the fore border ; wing-ribs and 

 veins ferruginous ; veins black towards the tips ; poisers yellow. 

 Length of the body 6 lines ; of the wings 12 lines. 



Var. /3. Veins of the wings not clouded. 



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

 G. Barns ton, Esq. 



Eristalis torridus, n. s., fem. Niger, thorace pube fulva subvittato, 

 scutello fulvo, abdomine fulvo, segmentorum marginibus posticis 

 apiceque nigris, oculis fasciatis, antennis piceis subtus ferrugi- 

 neis, pedibus fulvis, femoribus nigris, tibiis posticis tarsisque an- 

 terioribus piceis, alis limpidis. 



Body black: head covered with hoary bloom, clothed with taw- 

 ny hairs ; front clothed with pale yellow hairs : mouth black : feel- 

 ers pitchy, ferruginous beneath ; bristle tawny, black towards the 

 tip : eyes red, adorned with six black bands ; all the facets very 



