No. 2326. THREE TRIBES OF ICHNEUMONINAE—CVSHMAN. 23 



repetition of the color pattern of the hind legs in the middle and front 

 legs is also much stronger than in any of the other species. 



Clypeus about two-thirds as long as wide, rather more strongly 

 convex and apicaUy rounded than its closet relatives; postoceUar 

 and ocell-ocular lines and diameter of lateral ocellus nearly equal; 

 mesoscutum opaque, densely, finely pubescent; propodeum sub- 

 opaque; polished apically, median carinae distinct, parallel but 

 sharply divergent posteriorly and obscurely joining the short lateral 

 carinae, setting off a rather distinct petiolar area; metapleura weakly 

 punctate and, with the propodeum, clothed with long pubescense; 

 thorax otherwise polished, impunctate and mostly without pubes- 

 cense; mesopleural furrow wealdy foveolate. 



There is considerable variation is some cliaracters; the propodeal 

 carinae in one female are very weak, the median carinae being prac- 

 tically absent and the surface of the propodeum is subpolished; the 

 nerveUus is usally broken at about the middle and perpendicular, 

 but occasionally, notably in the single male in the United States 

 National Museam, it is broken far below the middle and is inciivous; 

 the front coxae vary from picoous through testaceous to whitish; 

 the females range in size from 7 to 9 mm. 



This species has a very wide range. Cresson's type is from Texas, 

 Davis's from Idaho, and Provancher's from Canada. The National 

 Museum specimens are from Ithaca, New York; Boulder, Colorado; 

 Plateau Creek, Colorado; Cadet, Missouri; Vienna, Virginia; Santa 

 Fe, New Mexico ; and Menlo Park, California ; with additional specimens 

 labelled simply Missouri, Colorado, and Minnesota. The only breeding 

 record is based on a specimen reared by the writer at Vienna, Vir- 

 ginia, on May 12, 1913. The host was the common spider, Steatoda 

 borealis. An account of this rearing appeared in the Proceedings of 

 the Entomological Society of Washington (vol. 15, p. 157). 



POLYSPHINCTA (POLYSPHINCTA) ALBIPES Cresson. 



Polysphinda albipes Cresson, Comstock, Kept. Ent., U. S., 1879 (1880), p. 208, 

 male. Type. — Lost. 



Careful search for the type of this species both in the Academy of 

 Natural Sciences of Philadelphia and in the United States National 

 Museum at the time Mr. Cresson was preparing the manuscript of 

 his recent paper. The Cresson Types of Hymenoptera^ failed to 

 reveal it, and it has probably been destroyed. It was, however, a 

 member of this subgenus and very closely allied to the next species 

 if not the same. 



The supposition that it was parasitic on a lepidopterous larva 

 on the orange tree on whicli it was found in Florida is obviously 

 erroneous. 



1 Mem. Amer. Ent. Soc, No. 1. ]9)6 



