with descriptions of new species. 559 
BRACONID. 
Chelonus carinatus, n. 8. 
Black, half-shining, covered with a close microscopic 
silky pubescence ; the greater part of the scape of the 
antenne and the four following joints reddish testaceous ; 
extreme apex of cox, trochanters, apex and base of 
anterior femora, and the posterior knees, pale red ; four 
anterior tibiz and tarsi pallid testaceous ; hinder tibize 
broadly annulated with white, the white ring being nearer 
the top than bottom ; tips of four anterior tarsi and the 
hinder pair fuscous; the greater part of the hinder ~ 
metatarsus white; spurs white; basal third of abdo- 
men white, except a blackish mark at extreme base; 
at the apex this white portion is rounded, and at its 
junction with the black colour passes into brown. Man- 
dibles reddish. Antenne about the length of the body, 
17-jointed, the seven apical joints thicker than the basal 
ones. Head finely punctured, the face covered with 
white hair. Mesonotum finely punctured. From the 
usual transverse ridge at the base of the scutellum there 
runs a central straight carina to the base of the meso- 
notum; next to this is a short carina, and outside of 
this again are two curved outwardly, but it is only the 
second which reaches the edge of the thorax ; these keels 
are united by fine cross-bars. Scutellum smooth, shining 
on basal half, apical half with longitudinal striations. 
Metathorax punctured, and with distinct coarse longi- 
tudinal striations, truncated at the apex, and with a 
minute tooth at each edge. Abdomen about the length 
of head and thorax, finely punctured, the punctures 
almost obsolete on the basal white portion. The second 
segment depressed in the centre, and produced at the 
sides into a leaf-like ridge, from the inner side of which 
runs an almost obsolete carina in the direction of the 
centre of the segment, but which is not reached. The 
union (apparent) of the second with the third segment 
is indicated by a fine transverse line. Wings hyaline, 
stigma, radial and cubital nervures fuscous; other 
nervures pale testaceous. Female. Length 1} lin. 
Various localities in the island of Oahu. Sent by 
Mr. Blackburn as No. 57. 
