182 CRABRONIDA. 
and all the articulations of the legs ferruginous ; the margins of 
the segments of the abdomen frequently piceous. 
¢ 9 in my own Cabinet. 
+4+ This species has been taken at Coombe ; Mr. Walker 
takes it upon lime-trees and in windows near London; 
and I have found it this year in Battersea Fields upon a 
red-currant bush infested by an Aphis. 
Genus XXHEII.—Ceunra. Shuck. 
Heap transverse, of about the width of the thorax; the stem- 
mata placed in an equilateral triangle, far back upon the 
vertex ; eyes lateral, oval; antenne inserted on each side at 
the base of the clypeus, geniculated; labrum concealed; man- 
dibles simple, arcuate, in ?, bidentate at the apex in the ¢. 
Tuorax oval, gibbulous; collar transverse, angles acute; 
scutellum transverse ; metathorax elongate, truncated, its su- 
perficies having a cordate enclosed space ; superior wings with 
a very large ovate stigma, the marginal cell of the usual form, 
the first submarginal cell nearly twice as large as the second, 
which is square, the recurrent nervure anastomoses, mith the first 
transverso-cubital; legs slender, simple. AxBpomeEn subsessile, 
ovato-conic. 
Type, C. troglodytes. V.d. Lind. 
+4-+ The name of this genus is derived from xyAls, which 
is synonymous with stigma. I have separated it from the 
preceding, both on account of the different neuration of 
the wings and its general difference of habit. 
Sp. 1. troctopytes. V. d. Lind. 
niger, pedibus piceis, tarsis posticis ferrugineis. 
¢ naso, clypeo et mandibulis flavis. 
length 1—1$ lines. 
Stigmus troglodytes. V.d. Lind. pt. 2. 74. 2. 
Head black, delicately punctured ; antennz black, with the 
