CECIDOMYIA. 195 



black and red transverse bands, the latter less distinct in the 

 male ; hairs of the abdomen blackish with a lighter reflection. 

 Antennae of the male with 20 or 21 brown flagellar joints with 

 rather long peduncles, the uppermost being much smaller than 

 the preceding ; the verticillate hairs very long and rather light. 

 The female has generally some flagellar joints less, and its joints 

 are round, with shorter hairs and without any peduncle. The 

 female ovipositor has a very moderate length and is little pointed. 

 Legs of the female black without white reflection. Legs of the 

 male much longer and more slender than those of the female ; hind 

 tibiae and tarsi everywhere with a white reflection, which, on the 

 fore and middle tibiae and tarsi, is chiefly seen on the under 

 side. Poisers black. Wings blackish on account of their close 

 and long hairs ; between the first and second longitudinal veins no 

 transverse vein is visible ; the second longitudinal vein towards its 

 end is very little curved exteriorly ; the anterior branch of the 

 third longitudinal vein is distinct and nearly straight." (Descrip- 

 tion drawn from dry specimens.) 



10. C. hirtipes 0. S. Rounded gall at the tip of stunted stalks 

 of Solidago, sometimes nearly an inch in diameter, smooth, brown- 

 ish on the outside, solid inside, containing several larvae in different 

 compartments. I found them in August, and obtained the fly on 

 the 11th of September. 



C. liirtipes 0. S. ?. — Antennae reddish-black, 22-jointed, 

 joints short, subcylindrical, almost subglobular, gradually decreasing 

 in size towards the tip, separated by pedicels which are shorter than 

 the joints, verticillate-pilose ; head dark reddish with black hairs 

 on the vertex; eyes contiguous on the front; thorax blood-red, its 

 back blackish, the usual three stripes being almost coalescent and 

 separated by rows of erect black hairs ; collare blackish above ; 

 pleurae blood-red, with indistinct black dots ; scutellum and meta- 

 thorax red, the first with black hairs; halteres reddish at base, the 

 club deep black ; abdomen red, upper side of the segments with a 

 blackish, apressed, rather sparse pubescence ; coxae reddish, feet 

 deep black; wings with a dense, blackish pubescence; costa black, 

 especially along its middle portion ; second longitudinal vein reaches 

 the margin at or close by the tip of the wing ; cross- vein indistinct. 

 (Description drawn from a fresh specimen.) 



11. C. carbonifera, n. sp. Pale, circular spots, surrounded by 



