LIST OF DIPTERA. 



is straight, nearly upright, far from the border of the wing, and in- 

 dicative of feeble flight, parted by nearly thrice its length from the 

 middle cross-vein, by six times its length from the end of the fourth 

 longitudinal vein, and by thrice its length from the end of the fifth 

 longitudinal vein. Length of the body 1 line ; of the wings 2 lines. 



Drosophila debilis, n. s., fern. Fulva,abdomineferrugineo,pedibus 

 fulvis, alls subcinereis. 



Body tawny, thickly clothed with black hairs ; head wanting: 

 abdomen ferruginous, obconical, a little longer than the chest: legs 

 tawny: wings slightly gray; wing-ribs and veins tawny; third 

 longitudinal vein slightly curved upward after its junction with the 

 middle cross-vein ; fifth longitudinal vein slightly curved downward 

 after its junction with the lower cross-vein, where it does not form 

 an angle ; lower cross-vein straight, nearly upright, parted by a little 

 more than twice its length from the middle cross-vein, by much 

 more than thrice its length from the end of the fourth longitudinal 

 vein, and by a little more than its length from the end of the fifth 

 longitudinal vein ; poisers tawny. Length of the body 1 line ; of the 

 wings 2\ lines. 

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



Drosophila varia, n. s., fem. Fulva, abdomine maculis octo fascia- 

 que una nigris ornato, ventre nigro, pedibus flavis, alls limpidis 

 fusco apice maculatis. 



Body tawny : head wanting : chest bright tawny, beset with a 

 few black bristles ; breast paler : abdomen obconical, darker and 

 much narrower, but not longer than the chest, adorned with six 

 black spots, three in front and three behind a black band which 

 traverses the middle ; there is also an indistinct black spot on each 

 side of the tip ; underside mostly black : legs pale yellow : wings 

 colourless, adorned with a brown spot at the tip of the second longi- 

 tudinal vein ; wing-ribs and veins tawny ; longitudinal veins 

 straight ; lower cross-vein upright, hardly inclined inward, parted 

 by much more than twice its length from the middle cross-vein, by 

 full four times its length from the end of the fourth longitudinal 

 vein, and by a little more than its length from the end of the fifth 

 longitudinal vein ; poisers tawny. Length of the body f line ; of 

 the wings Inline. 



a. Georgia. From Mr. Abbot's collection. 



5 D 



