196 G. R. Osten Sacken: Diptera 



by the enormous development of the thorax in front of the fore-coxae 

 and the unusual position of the prothoracic stigma, dependent on it. 

 He ad not much developed behind the eyes; antennae: basal 

 joints short, of the ordinary structure, third Joint oblong; arista short- 

 plumose; labella rather small. — Thorax unusually extended in front 

 of the root of the wings and of the fore-coxae, so that its anterior 

 portion is nearly twice as long as the posterior; the prothorax has a 

 large development on the underside of that anterior portion, so that 

 the prothoracic stigma is placed midway between the front coxae and 

 the anterior end of the thorax. The scutellum is rather large, tri- 

 angulär, and bears four strong bristles; the metanotum is raised in the 

 shape of a hump; the portion of the mesothorax in front of the scu- 

 tellum and round the roots of the wings bears a number of strong 

 bristles^). The legs are comparatively short (much shorter than in 

 Nerius fuscus); the fore coxae are close by the middle coxae and in 

 a vertical line unders the root of the wings. — Wings, auxiliary and 

 first veins as in Calobataj the second is more distant from the costa, 

 and its tip in very near the apex, far beyond the posterior crossvein; 

 the third and fourth veins are somewhat diverging; the third ends in 

 the apex, the fourth exactly opposite the tip of the second; second 

 basal cell closed; anterior crossvein not oblique. — Abdomen com- 

 paratively short, the male genitals must be small and hidden, because 

 I cüuld not perceive the usual appendages of the Microspezidae. (I 

 suppose the specimens to be males; Mr. Bondani does not mention 

 the sex). 



Grammicomyia Bigot (Rev. et Mag. de Zool. 1859, No, 7; 

 Ceylon). Although closely allied to Calobata (Subg. Taeniaptera) it 

 shows some well-marked plastic characters of its own, and may at 

 once be accepted as a good genus. It is represented by a single 

 species, G. testacea, a small yellow fly with a brown spot on each 

 side of the front. I received it in two specimens through the kindness 

 of Dr. C. A. Dohrn in Stettin. — It diflFers from the Taeniapterae of 

 Southern Asia in its more slender shape, in the form of its head, which 

 is comparatively large, more detached from the thorax, oblong, flattened 

 from above, its vertical diameter being much shorter than the longitu- 

 dinal; the head projects strongly in front of tbe eyes, in consequence 



') At the time when I took this note in Genoa, I had not worked 

 out my Chaetotaxy, and for this reason I cannot describe these 

 bristles with more accuracy. 



