560 Mr. Cameron’S™otes on Hymenoptera, 
Monolexis ? palliatus, n. s. 
Head cubital, shaped as in Spathius. Antenne 32- 
jointed, the joints of almost equal thickness throughout, 
the first joint of flagellum one fourth longer than second. 
Wings with two cubital cellules. Anterior discoidal cellule 
petiolate, hinder discoidal cellule open, recurrent nervure 
interstitiate. Neuration of posterior wings as in Spathius. 
Fore and hinder tarsi much longer than their tibie ; 
middle tarsi scarcely longer than tibie. Abdomen sub- 
sessile ; first and second segments separated by a deep 
transverse furrow, widest in the middle, where it projects 
behind ; second segment shorter than first; the rest 
shorter, subequal. Ovipositor a little shorter than the 
abdomen. Pallid testaceous, a longish spot on vertex, 
one behind the eyes; the greater part of the lateral 
lobes of mesonotum and of pleure and abdomen fuscous ; 
the metanotum, metapleure, and basal third of abdomen 
dark testaceous. Legs white, a line on hinder femora, 
base of hinder tibiz, a broad linein middle and base of tarsi 
fuscous. Wings hyaline, costa testaceous ; stigma fus- 
cous, paler at base. Antenne longer than body, fuscous 
at apex, and the other jomts have a small fuscous ring 
at the apex. Head and mesonotum smooth, shining, 
impunctate ; the head with a few longish scattered hairs ; 
metanotum with an indistinct central carina, which 
bifurcates towards the middle of metanotum in two 
branches, which turn to the side; hinder half of meta- 
notum slightly rugose, and sparsely covered with white 
hairs. The first and second abdominal segments are 
coarsely constricted longitudinally ; on the extreme edge 
of first is a distinct keel, and from the base there run 
two central keels, which get lost in the striations in the 
middle of the segment; the basal half of the space 
enclosed by these keels is smooth, shining, not striated. 
The rest of the abdomen is smooth, shining, impunctate. 
The male has the antenne longer (distinctly longer than 
the body), the metanotum and base of abdomen darker ; 
the fuscous ring on hinder tibie is shorter, and the tarsi 
have only the apical joints fuscous. Length 2 lin. 
Expanse of wings, 34 lin. 
In the form of the head, antennx, and thorax, and in 
coloration, this species agrees with Spathius, but it differs 
from it in having only two cubital cellules, in the abdo- 
