466 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 53. 



Described from one specimen from each sex reared by Mr. E. J. 

 Newcomer, the type, May 22, 1915, u»der Quaintance No. 11422 and 

 the allotype May 25, 1916, under Quaintance No. 14018. 



SCAMBUS EPHIALTOIDES, new species. 



In its long, slender form and remarkably long ovipositor this 

 species is suggestive of the genus Ichneumon ( = Ephialtes). It also 

 resembles more closely than does any described North American 

 species the genotype, Scambus sagax Haitig. 



Female. — Length, 9 mm.; antennae, 5 mm. (the antennae of the 

 type are broken, the antennal measurement being taken from a para- 

 type female of the same size) ; ovipositor, 9 mm. 



Head polished, impunctate, very thick antero-posteriorly, with the 

 temples nearly as broad as the eyes and very strongly rounded to the 

 weak occipital carina; eyes large, slightly converging toward the 

 clypeus and very slightly emarginate opposite the antennae; post- 

 ocellar and ocell-ocular hues equal and shghtly greater than the diam- 

 eter of a lateral ocellus ; face short, elevated medially ; clypeus short> 

 medially impressed, and with a deep triangular emargination, malar 

 space very short, cheeks strongly convex. Thorax slender, sub- 

 cyUndrical, pohshed, weakly punctate, pronotum and mesopleura im- 

 punctate; notauli strong anteriorly but soon obliterated, prescutum 

 gibbous; propodeum with sparse suberased punctures, the carinae 

 extending nearly to the apex; radius originating before middle of 

 stigma, nervellus broken close to brachiella and very strongly ante- 

 f ureal; legs slender, the hind coxae in their greatest width barely 

 two-thirds as wide as long. Abdomen slender, more than one and a 

 half times as long as head and thorax together; first tergite very 

 small, at its apex scarcely half as wide as apex of second ; tergites 2-5 

 strongly punctured except for their polished apices, others obscurely 

 roughened; ovipositor slender, compressed, as long as body. 



Black; clypeus entirely and mandibles toward then* apices piceous ; 

 palpi pale fuscous; antennae black, scape at apex and pedicel out" 

 wardly piceous; wings hyaline with brownish stain, veins and stigma 

 brown, except costa and metacarpus, which are whitish, tegulae white, 

 stramineous at apices; hind legs with coxae black, basal joint of 

 trochanter piceous at base, second joint and apex of first whitish, 

 femur reddish testaceous, tibia fuscous with a paler basal annulus and 

 elongate spot above at midd'e, tarsus fuscous with an obscure paler 

 annulus at base of first joint; other legs with same color pattern, but 

 with the colors paler and less contrasting, especially in the front legs, 

 where the black becomes piceous and the fuscous pale testaceous to 

 stramineous, 



Male. — Length, 7 mm.; antennae, 4 mm. 



Differs from female principally as follows: Head even longer 

 antero-posteriorly, malar space nearly obliterated; front femu^ 



