556 Mr. Cameroyg notes on Hymenoptera, 
SIEROLA, Nn. g. 
Antenne 13-jointed, not much longer than the head ; 
the scape thicker than the other joints, and as long as 
the following, the third and fourth slightly longer than 
the succeeding, and produced beneath on the lower 
side; remaining joints not much longer than broad, 
distinctly separated from each other. Wings with a 
stigma and prostigma, the two being separated by a 
hyaline space, costa thickened in front “of stigma ; radial 
cellule completely closed, the nervure being united to 
the costa, broader, and more rounded at the apex than 
base; two humeral cellules unequal, and closed; from 
the end of the lower (and smaller) cellule there proceeds 
from the upper end a small oval cellule, which is united 
to the prostigma by a short thick nervure, so that the 
upper humeral cellule is thus completely closed. From 
the end of the radial cellule runs, to the edge of the 
wing, a white spurious vein; another runs in the same 
direction from the small oval cellule above mentioned, 
the two being united by a cross nervure half-way between 
the radial cellule and the apex of tbe wing; another 
spurious vein runs from the lower humeral cellule to 
the bottom of the wing. Head, legs and body formed as 
in Perisemus, Scleroderma, &e. Abdomen longer than 
head and thorax, the third and fourth segments con- 
tracted in the middle at their junction; in length sub- 
equal; the last is acuminated. 
This genus differs from all the genera of Bethyloide 
in having the radial cellule completely closed, and in 
the presence of the small oval cellule uniting the 
humeral cellules. It comes nearest to Goniozus, 
Forster. In the shape of the prostigma it more 
resembles Perisemus. 
Sierola testaceipes, n. s. 
Black. Head and mesonotum faintly alutaceous ; 
abdomen smooth, shining; three basal joints of antenne 
and legs testaceous ; abdominal segments at their junc- 
tion dull testaceous. Wings deeply fringed, shorter 
than thorax and abdomen, hyaline; stigma and pro- 
stigma fuscous; other nervures pale. Head and thorax 
covered with a scattered pubescence. Female. Length 
scarcely 1} lin. 
