On the Hymenoptera of the Georgetown Museum. 319 
posteriorily at the base and apex ; the antenne are placed high up, close to the 
frontal depression ; the upper tooth of the mandibles is longer and sharper than 
the lower. The 2nd transverse cubital nervure is faint except in front and 
behind. The basal 2 abdominal segments are faintly keeled down the middle, 
the abdomen is as long as the head and thorax united. 
Tam unable to classify this genus to my satisfaction. In the arrangement of 
Szepligeti (Gen. Ins. Braconidz, 5) it comes nearest to the Diopsiline. When 
the female has been discovered it probably will be found to form the type of 
a new tribe. Certainly the structure of the tarsi is very peculiar. The obliquely 
depressed apex of the c!ypeus and the projecting mandibles when closed gives 
the mouth the appearance of what it is in the Cyclostomz. 
Rhopalotoma crassitarsis, sp.n. 
Rufo-testaceous, the apex of the apical joint of the tarsi, the apex of the hind 
tibie and the basal 3 <oints of the hind tarsi, the stemmaticum, mandibular 
teeth and the antenne, black ; wings fuscous, the stigma and nervures biack, 
inclining to fuscous. The head and thorax are covered with short, the apical 
abdominal segments with longer pale pubescence. Middle of the front with 
stout curved striz on either side of the centre, the vertex almost smooth. 
Face strongly, closely punctured, more strongly in the centre than on the sides ; 
there is a broad, smooth keel down the centre of the top of the face. Pro-and 
mesothorax closely punctured ; the metanotum at the base finely rugose ; down 
the centre are 2 diverging keels running to the top of the apical slope and having 
about 5 transverse keels between them, the apical slope is less strongly keeled 
round the top and sides and is of a pale yellow colour, the metapleure being 
also of a paler yellow and more strongly and irregularly punctured than the 
mesopleure. Propleure stoutly striated down the central depression, the 
apex crenulated. Basal 2 abdominal segments closely, longitudinally striated, 
keeled down the centre ; the others closely punctured, the punctures becoming 
gradually weaker ; the last segment is fuscous. Male. Length > m.m. 
SIGALPIN. 
Fornicia cla'thrata, Bé. 
Brullé, Hist. Nat. d. Ins. Hymén. IV, 512, Pi. 44, f. 3. Bred from the Lima- 
codid moth Sidine bimacu'a The species was originally described from Bahia, 
Brazil. 
CHELONIN 2. 
Phanerotoma pallida, sp.n. 
Pallid yellow, the mesanotum slightly tinged with testaceous, the sides of the 
back of the abdomen with a narrow dark line ; the legs paler coloured than the 
body, the antenne darker coloured, the apical hal! infuscated ; wings hyaline, 
the stigma and nervures pallid yellow, almost white. Stemmaticum black. 
Female. Length 2.5; terebra -5 m.m. 
Bred from the caterpillar of a Pyralid. 
