1868.1 223 



faintly as my words reflect that which I would describe, they will 

 awaken in many minds kindred memories of happy days in the past. 

 And if, in addition to this, they afford to any one a useful hint for 

 future work, or suggest a fruitful thought, their object will have been 

 attained. 



London : Becemher, 1867. 



ON SOME BRITISH CYNIPID^. 

 BY THE BEV. T. A. MAESHALL, M.A. 

 (Gontinued from page 174.) 

 Genus Diasteophus, Hartig. 

 Maxillary palpi 5-, labial 3-jointed, the two last joints appendicu- 

 lated. Antenna) of the (^ 14-jointed, somewhat thickened towards the 

 apex, the 3rd joint half as long again as the 4th ; of the $ 13-jointed, 

 the 3rd joint only a quarter as long again as the 4th ; the joints from 

 the 4th to the penultimate, in both sexes, decreasing gradually in 

 length ; the last joint longer than the preceding, lanceolate. Body 

 glabrous in D. rM^i (pubescent in D. scabiosce). Mesothorax large, ele- 

 vated, gibbous, with two deep longitudinal sutures, hardly converging 

 posteriorly, and a medial suture abbreviated in front ; all the sutures 

 punctulate ; interstices shining, but with very minute and shallow 

 punctures. Scutellum separated from the mesothorax by a transverse 

 suture, rugose, pubescent, nearly hemispherical as seen from above, 

 with two small basal foveola3. Metathorax rugose, perpendicular. 

 Abdomen of the $ compressed, the first segment occupying one-half 

 of its length, the following gradually shorter; ovipositor directed 

 upwards and outwards, shorter than half the height of the abdomen ; 

 in the $ the abdomen is smaller, less compressed, and the 3rd and 

 following segments are retracted within the 2nd, except the apical one, 

 which projects in a short cone. "Wings ample ; nervures as in Gynips ; 

 areolet small, basal ; the sub-costal beyond the middle, the base of the 

 radial cell, and the two complete sides of the triangular areolet, in- 

 crassated. 



Diastrophus, Hart., in Germ. Zeits., 2, 194 ; 4, 410 ; Tasch. 

 Hym., 123. 



Diastrophus ruhi, Hart. 

 Black ; parts of the mouth, antennae at the base, squamulse, and 

 legs, ferruginous ; extreme base of the coxae and apex of the tarsi, black. 



