May, 1876.] 2(55 



both shining and black. In ? all the Bcgments are shining black, but have a small white 

 spot on the lateral edge of each, which is only visible in certain lights. Wings with a smoky 

 tinge, which is especially marked along the anterior border. Costal spine large. Second 

 longitudinal vein armed with minute teeth along its anterior half. Fourth with the teeth 

 extending as far as the internal transverse vein. Legs with a few scattered long hairs on 

 the inner sides of the po.sterior tibiaj of cf . 



Not rare. I captured several ^ of tliia pretty little fly at Tinge- 

 wick, near BuckiDgham, on 2ud August, 1873, but did not Bee a single 

 ? . On the I7tli September in the following year, I took four ? in 

 the same locality, but found no (^ . 



15. Infantula, Eond. 



G-rey. ^ striped and marked as in S. dissimilis. Frontal space 

 wide. Posterior tibi» of ^ with inner sides bare. Second longitudi- 

 nal vein dentigeroua. Length, 2 lines. 



Sead : frontal space nearly equal to one-third of the width of the head in <J . 



Thorax striped in the ordinary manner, and having three posterior dorsal bristles. 



Abdomen having the second segment armed with two long erect central spines. Form 

 and design much as in S. dissimilis, but with the lateral rows of triangular spots less dis- 

 tinctly formed. Wings armed as in S. dissimilis, but less tinged with brown. Legs without 

 any long hairs upon the inner sides of the tibias of <J . 



9 unknown. 



Eare. There is one specimen in Mr. Verrall's collection, captured 

 at Eeigate, Surrey. 



16. H^^MOERHOiDALis, Zett., Eoud. 



Grey. Marked and tessellated as in S. carnaria. Four thoracic 

 bristles behind the suture. Abdomen with two central spines upon 

 the edge of the second segment. First anal segment of (J shining 

 black, second red. Costal spine of wings distinct. Second longitudi- 

 nal vein without teeth. Beard upon the posterior tibiae of ^ thin and 

 short. Length, 4| — 5 lines. 



This species closely resembles S. carnaria in all points except the following. It never 

 attains to the size of some specimens of the latter ; the terminal segment of the abdomen is 

 red ; the costal spine is larger ; and the posterior tibia) of the <J are more thinly and shortly 

 bearded, the hairs onlj' extending a short way up the leg. 



The ? closely resembles that of carnaria, but has the tip of the abdomen red. 



Eare. I received a (J of this species from the late Mr. F. Walker, 

 and captured one ? at Bowdon, Cheshire, in June, 1875. 



I have not mentioned the names of either Fallen, Meigen, Mac- 

 quart, "Walker, or Schiner, in the synonyms of this species, for their 

 descriptions of S. hcsmorrhoidnUs either apply to the next species, or 

 are so imperfect, that it is impossible to say to what species they refer. 



