224 [March, 



Face, and sides of the thorax partially, aciculated. Abdomen nigro- 

 piceous ; of the ? , often reddish beneath. Wings hyaline, nervures 

 reddish-brown. (^ $ . Long. I — l^ ; alar, exp. 3| — 4i lin. 



Tar. a. With a fulvous patch on each side of the thorax, before the 

 tegulse. 



Var. h. With a fulvous patch as in var. a, and with the disc of the 

 mesothorax and scutellum variegated with fulvous or testa- 

 ceous. An extreme example of this variety is described, by 

 mistake, on p. 101, as Andricus Hartigii. That name must 

 be suppressed, and the description considered as referring to 

 this place. 



Not to be confounded with Cynips ruhi, Schrank, Ins. Austr., p. 

 320, No. 646, which is a Callimome, probably parasitic in the bramble- 

 gall. Another parasite is Eurytoma hahrotani. 



D. ruhi forms the strumous enlargements frequently seen on the 

 stems of Muhus cossius. These galls are figm-ed by Keaumur, Ins., t. 3, 

 pi. 36, f. 1 — 5. rig. 4 represents the larva magnified ; it has two oval 

 brown spots on the last segment but one. 



Beside the preceding, two other species of Diastroplms have been 

 described ; D. aceris (Forst), Kaltenbach, Ver. nat. Ver. d. pr. Rheiul., 

 1856, p. 171 ; and B. scahiosce, Giraud, Verb. Zool. bot. Gesellsch. 

 Wien, 1859, p. 308, — which are both likely to be found in this country. 



Genus Spathegastee, Hartig. 

 Antennae ^ 15 -jointed, longer than the body, slender, filiform ; 

 3rd joint nearly twice as long as the 4th ; 4 — 14 gradually decreasing 

 in length, 14 and 15 equal, the latter acuminated ; of the $ 13-jointed, 

 hardly longer than the head and thorax ; 3rd joint as in the ^ , 4th 

 longer than the 5th, 6 — 13 much shorter, and gradually incrassated to 

 the apex. Mesothorax convex, gibbous, hardly shining, sub -coriaceous, 

 with three obsolete longitudinal sutures ; at each hinder angle is a 

 foveola. Scutellum separated from the mesothorax by a wide, sinuated 

 depression ; oblong, sub-coriaceous, faintly margined, hardly shining. 

 Metathorax nearly perpendicular. Petiole of the (^ one-third as long 

 as the hind coxse ; of the ? very short. Abdomen of the $ much 

 compressed, the dorsal ridge rising above the scutellum; viewed 

 laterally, sub-orbicular, truncated behind ; ovipositor hardly exserted. 

 Abdomen of the (^ , viewed from above, linear, compressed, much smaller 

 than that of the ? , its dorsal ridge not rising nearly as high as the 

 scutellum ; viewed laterally, spathuliform, its upper edge convex, the 

 lower edge straight. Wings as in Neuroterus. 



