LIST OF DIPTERA. 613 



small : chest and breast covered with tawny down, clothed with 

 short tawny hairs ; the down on the chest arranged in indistinct 

 stripes ; scutcheon tawny : abdomen obconical, longer and a little 

 narrower than the chest, tawny for half the length from the base, 

 with the exception of the hind borders, which, like the rest of the 

 abdomen are black : legs clothed with short yellow hairs ; hips 

 and thighs black ; tips of thighs yellow ; tips of hind thighs red, 

 clothed beneath with short black hairs ; shanks tawny, yellow 

 towards the base ; hind shanks pitchy, clothed with short black hairs, 

 tawny at the base ; feet pitchy ; hind feet tawny, with pitchy tips ; 

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

 less ; a very small brown spot on the middle of the fore border ; 

 wing-ribs tawny ; veins black, tawny towards the base ; poisers yel- 

 low. Length of the body 6 lines; of the wings 11 lines. 



a. ? 



Eristalis calidus, n. s., fern. Niger, scutello abdomineque fulvis 

 hujus apice vittaque dilatata nigris, antennis piceis, pedibus fla- 

 vo-fulvis, femoribus nigris, alis limpidis ad cos tarn fulvis. 



Body black : head covered with yellow down, clothed with yel- 

 low hairs ; crown beset with a few black hairs ; a broad brown 

 shining stripe between the feelers and the mouth, which is pitchy : 

 feelers pitchy ; bristle tawny, downy : eyes pitchy ; facets very 

 small : chest and breast thickly covered with short tawny hairs ; 

 scutcheon tawny : abdomen nearly oval, tawny, longer and a little 

 broader than the chest, clothed with short tawny hairs, black at the 

 tip, and having on the back a black interrupted stripe, which during 

 its course is widened into two short bands : legs clothed with short 

 tawny hairs ; hips black ; thighs black, with yellow tips ; hind 

 thighs pitchy, tawny towards the base ; shanks tawny, yellow at the 

 base ; feet pitchy, tawny towards the base ; claws and foot-cushions 

 tawny ; tips of claws black : wings colourless, tawny along the fore 

 border for more than half the length, where there is a small brown 

 spot ; wing-ribs tawny ; veins black, tawny towards the base ; poi- 

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



Eristalis frater, n. s., fern. Niger, thoracis vittis quatuor scutel- 

 loque fulvis, abdominis fasciis duabus fulvis utrinque connexis, 

 antennis piceis, pedibus nigris t tibiis basi fulvis, alis cinereis. 



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

 crown beset with black hairs : mouth black : feelers pitchy ; bristle 

 tawny: eyes black; all the facets very small: chest and breast 



