56 HYMENOPTERA. 
the apex, and on each side an obtuse tooth near its base; the 
abdomen is strongly punctured and shining. 
Hab. Vera Cruz. 
276. MurTILLA CRUX. 
Female. Length 4 lines.—Black, head a little wider than the 
thorax, rounded behind; the face and vertex adorned with 
golden pubescence , the scape, two basal jomts of the flagellum 
and the mandibles pale ferruginons, the latter black at their tips. 
Thorax elongate, narrow and unarmed at the sides, having a 
central longitudinal stripe of golden pubescence ; the legs ferru- 
ginous. Abdomen clothed with very short black pubescence ; 
a central longitudinal line of golden pubescence extends from 
the base to the apex, crossed by a similar line towards the apex 
of the second segment. 
Hab. Columbia. (Coll. W. W. Saunders, Esq.) 
277. MuTILUA INSIGNIS. B.M. 
Female. Length 8-9 lines.—Black, clothed with short black 
pubescence; head as wide as the thorax, quadrate, the posterior 
angles rounded ; the face clothed with golden pubescence, having 
a narrow line of black down the centre not extending to the in- 
sertion of the antennz; the antenne pale rufo-testaceous; the 
mandibles dark rufo-piceous. Thorax scarcely as wide as the 
head anteriorly, posteriorly narrowed beyond the middle; at the 
anterior angle of the contraction, on each side, a stout sharp 
tooth ; at the anterior angles of the metathorax laterally an obtuse 
tubercle ; the mesothorax having a transverse broad band, angu- 
larly emarginate anteriorly, of pale golden pubescence ; the meta- 
thorax has a broad stripe of the same on each side; the legs 
clothed with pale golden, or inclining to an ochraceous pubes- 
cence. Abdomen: the basal segment clothed with pale golden 
pubescence, and having a black rounded spot in the middle; the 
second segment has on each side a large subovate spot clothed 
with very short dense pale golden pubescence; the four apical 
segments are clothed with a similar pubescence, and have a line 
of black pubescence down their centre, narrowest towards the 
apex ; the segments beneath have their margins fringed with pale 
glittering pubescence; the black pubescence of the entire insect 
sprinkled with long erect black hairs, and the yellow pubescence 
with erect yellow ones. 
Hab. Columbia. (Coll. W. W. Saunders, Esq.) 
