BV A. I.. TONNOIa 



63 



All femora and tibiae yellow with dark tip. 



Anterior veins yellow. 



Spot of the wing extendin-i- alongside r,^-cn. 



Greater robustness of hypopygium, with some of the 



parts presenting a different shape. 

 Stem of K'.j 4. :{ about equal to J^^ and not very much 



longer, as in flavicollis. 



D. TASMAXH'JXSIS, n.sp. 



Fitf. 3. Hypopyfiiiim of D. ia-'-tnanietisis from below and from the side. 



Male: Head shining black, proboscis yellow, palpi and 

 antenna? black, but the scape a little lighter on the side. 

 Mesonotum yellowish-orange with three brown-black bands, 

 confluent anteriorly, the median one divided by a very thin 

 line, and shortened behind so as to leave a huge yellow space 

 in front of the scutellum, which is also yellowish, except on 

 the sides; post-scutellum black; pleura? blackish, lighter be- 

 low the base of the wings. Front coxie brown at base, 

 yellowish at tip as well as the others, and the base of 

 femora, which are more or less testaceous on their whole 

 length, their tip being distinctly black; the middle femora 

 arc somewhat darker; tibite and tarsi brownish, the hind 

 tibia? a little lighter, chiefly at base. Base of stem of haltercs 

 yellowish, then dark, and the knob again yellowish. Abdo- 

 men l)lack, moderately shining; hyp;)pygium also black, 

 the daspers lighter; wing greyish with a moder- 

 ately marked brown spot extending from the Imse of Rs 

 towards flis and r-iii, also a slight shadow near the extremity 

 of Cu. 



The antcnme are as long as the abdomen at least, and 

 very thin t iwards the end; the iv-ints are elongated, cylin- 



