1865.1 5 



towards the tip. Thorax smooth and polished, reddish-brown, convex 

 above, and having on the extreme front a transverse, compressed, deeply 

 eiuarginate elevation ; lateral sutures of the mesothorax dark brown ; 

 tegulae dull rufous; scutellum produced, reddish-brown, its dorsal sur- 

 face broadly and very deeply excavated, leaving the sides thin and sharp, 

 its posterior face subquadrate, broadly concave, with the four corners 

 tuberculate, and from the middle of the anterior margin proceeds a ra- 

 ther long, acute spine, broad at base, suddenly constricted about the 

 middle, and then gradually tapering to the tip, which is acute; meta- 

 thorax pubescent, with two longitudinal, sinuate ridges down the mid- 

 dle, between which the surface is rather deeply excavated. Wings 

 hyaline, with a very broad fuscous band down the middle of both wings, 

 occupying more than one-half the length of the wing ; principal veins 

 dark brown; radial area broad and rather short, closed; areolet obsolete, 

 Fig. 2. or merely indicated by a brown dot Legs, including 

 the coxae, rufous. Abdomen convex, smooth and po- 

 lished, rufous, viewed laterally nearly as wide as long, the 

 2nd segment occupying about half its surface ; basal segment annular, 

 and clothed with a dense pale yellowish pubescence; ovipositor stout, 

 projecting above the ventral valve. Length If line. 



Collect ion. — Ent. Soc. Philad. Two specimens. 



Belongs to the true Cynipidae, but on account of the remarkable 

 sculptui-e of the scutellum and the veining of the wings, lam uncertain 

 to what genus it belongs, and therefore I place it, for the present, under 

 the head of Cgnips. The two transverse dotted lines in the figure of 

 the wing indicate the width of the fuscous band; the other dotted lines 

 indicate subobsolete nervures. 



Genus EUCOILA. Westw. 

 Eucoila? basalis, n. sp. 



Black: antennae, legs and base of abdomen rufous: wings hyaline: scutellum 

 with a deep, broad excavation at base and an oval, slightly elevated space near 

 the tip. 



Female. — Black, polished, mouth rufous; antennae half the length 

 of the body, rufous, thickened and blackish towards the tips, pubescent, 

 13-jointed, basal joint short and thick, narrow at base, 2nd joint short 

 and globose, 3rd joint longest, 4th shorter than the 3rd and equal with 

 the three following joints, remaining joints submoniliform. gradually 

 thickened, terminal joint one-half longer than the penultimate. Thorax 

 above convex, smooth and polished; collare with a patch of yellowish 

 pubescence on each side ; tegulse honey-yellow ; scutellum somewhat 

 produced, with abroad, transverse, very deep excavation at base, behind 



