NO. 1102. PROCEEDIKGS OF THE XATIOXAL MUSEUM. 135 



short acute median groove between the parapsidal grooves posteriorly, 

 the scutelhir fovete are not so sharydy defined, wliile the color of legs 

 and abdomen will at once distinguish it from that species. 



In the female the legs and abdomen are reddish yellow, while the 

 abdomen in the male is black. 



Habitat. — Kirkwood, INIissouri. Miss Mary Murtfeldt. 



Type.—l!io. 3095, U.S.N.M. 



Four siiecimens, 1 female and 3 males, reared October IS, ISSl, and 

 June 13, 1882. It is unfortunate that none of the ^alls were sent with 

 the flies. 



Genus DIASTROPHUS, Hartig. 



41. DIASTROPHUS SMILACIS, new species. 



Gall. — An irregularly rounded, abrupt, smooth swelling, occurring on 

 and usually surrounding the stems of Hmilax rotundiJoUa and IS. her- 

 bacea. It is of a pithy structure, and, in general appearance, exactly 

 similar to the rose gall, Rhodites u/iiota. Osten-Sackeu, with which it 

 might easily be confounded in a collection. 



It is i>olythalamous, seldom much over an inch in length by from a 

 half to three quarters of an inch in diameter. 



Gatljiij. — Female. Length, 2.(> to 3 mm. Polished black, the anteii- 

 nse dark red, legs yellowish red. The face, collar, and metathorax 

 punctate or rugulose, pubescent. Autenn?? 13-jointed, moderately stout 

 and rather short; the third joint is narrowed at base, about one-third 

 longer than the fourth and about as long as the ternnnal joint, the 

 following joints a little longer than thick, delicately fluted. Thorax 

 and mesopleura smooth, polished, the two parapsidal grooves distinct. 

 Scutellum rugose, a little ])rolonge(l at apex and with two broad fovete 

 at base, separated by a carina. Abdomen short, compressed below, 

 and a little piceous along the venter, the ventral valve without a si)ine. 

 Wings hyaline, pubescent, veins dark, the margins of the basal vein and 

 the base of marginal cell a little clouded, areolet large, distinct, cubital 

 cell closed; the radial vein at about two-thirds its length is slightly 

 bent and extends along nearly parallel with the open margin of the 

 radial cell. 



Ti/pe.—^o. 309C, U.S.N.M. 



Thirteen females, reared during January and February, 1SS4, from 

 galls received from Mr. J. C. Arthur Chicago, Illinois. The gall has 

 also been taken by Mr. E. A. Schwar/, in Florida. 



Genus RHODITES, Hartig. 

 42. RHODITES GRACILIS, new species. 



Gall. — An irregular, inflated, rounded gall, with the top broadened 

 and somewhat flattened, the edges suriounded with short, blunt tuber- 

 cles, Avhich are probably the apices of elevated ribs. 



