2 PROCEEDINGS OF THE NATIONAL. MUSEUM. vol.61. 



tured like the head, its posterior middle depressed and rugose, parap- 

 sidal grooves well developed ; scutellum sculptured like mesoscutum ; 

 propodeum rugose with a distinct median carina ; propleura rugose ; 

 mesopleura rugose above, granularly rugulose below with a smooth 

 area at the posterior middle ; mesosternum sculptured like the lower 

 part of mesopleura; metapleura finely rugulose; middle and hind 

 coxae granularly punctate, fore coxae polished; first abscissa of 

 radius about equal to first intercubitus, a little shorter than second 

 radial abscissa; abscissa of cubitus between recurrent nervure and 

 first intercubitus only a little shorter than first intercubitus ; nervulus 

 postfurcal by a little more than its own length; first abscissa of 

 discoideus not over half the length of second abscissa; abdomen 

 longer than head and thorax, laterally compressed at extreme apex ; 

 first, second, and third tergites rather finely rugulose, with scarcely 

 any indications of longitudinal striation, the median longitudinal 

 carina delicate and fading out before attaining apex of third tergite; 

 fourth tergite opaquely sculptured or nearly so, the sculpture similar 

 to that of the third but not quite so strong; tergites beyond the fourth 

 more weakly sculptured and mostly shining ; ovipositor sheaths about 

 as long as the exposed part of fourth tergite. Head and thorax 

 black; orbits before and behind, malar space more or less, mandibles, 

 sutures of mesoscutum, axillae, sides of scutellum, place of attach- 

 ment of wings and a line on mesopleura below middle, fusco-ferru- 

 ginous; antennae black; tegulae, all legs, and three basal segments 

 of abdomen ferruginous, the hind femora above toward apex and 

 their tibiae somewhat infuscated and the third tergite at apex black- 

 ish ; tergites beyond the third and ovipositor sheaths black. The fe- 

 male paratype has the fourth tergite ferruginous on basal half. 



Male.— iSimilar to the female in size and sculpture but the head and 

 thorax entirely black, the third tergite black except narrow base and 

 an incomplete median stripe. 



Type locality. — Fredericton, New Brunswick, Canada. 



Type.— Cat. No. 24971, U.S.N.M. 



Host. — Hyphantria, species. 



Two females and a male reared by A. G. Dustan, September 4, 

 1917, and bearing his number 11166. 



MICROBRACON CAULICOI^, new species. 



Resembles cephi Gahan but differs by having the antennae usually 

 29-jointed in the female, the ovipositor distinctly more than half the 

 length of abdomen, and the tergites less strongly sculptured. Differs 

 from xa.nthostigma (Cresson) by the less strongly sculptured tergites, 

 the slightly shorter ovipositor and the nearly uniformly reddish tes- 

 taceous color. Also resembles ar gut at or (Say) but may be distin- 

 guished by the less strongly sculptured tergites, the more strongly 



