NO. 2284. ]^TE^v NORTH AMERICAN ICHNEUMON-FLIES— CU8HM AN. 525 



the abdomen largely or entirely red, the ovipositor relatively shorter, 

 and in having the apical carina of the propodeum practically miitic. 



Female. — Length, 4.75 mm. ; antennae, 3 mm. ; ovipositor, 1.5 mm. 

 Differs from nigrosoma Ciishman otherwise principally as follows: 

 Head not distinctly swollen ; malar space about as long as basal width 

 of mandible; antennae two-thirds as long as body, 25-jointed; propo- 

 deum transversely striate only behind, irregularly roughened above, 

 the areola smooth, broader than long, hexagonal, petiolar area stri- 

 ato-granulate ; inner spur of hind tibia more than a third as long as 

 basitarsus; abdomen but slightly longer than head and thorax, two 

 basal segments and third (basally) granular, otherwise polished; 

 first tergite with dorsal carinae gradually weaker beyond middle and 

 not reaching nearly to apex; ovipositor two-thirds as long as ab- 

 domen. 



Black, with abdomen largely or wholly red; antennae reddish fus- 

 cous, usually paler at base; legs entirely rufo-testaceous, the hind 

 tibiae and tarsi very slightly darkened; wings hyaline; tegulae 

 stramineous; abdomen red, the petiole at extreme apex, and com- 

 pressed portion laterally usually black. The type female has the 

 abdomen and antennae entirely red. 



Male. — Length, 4.75 mm. ; antennae, 3.75 mm. Very like female, but 

 with sculpture of thorax, propodeum, and abdomen stronger, first and 

 second tergites distinctly striate, areola relatively narrower ; abdomen 

 with a greater extent of black both basally and apically, hind tibiae at 

 apex, and their tarsi distinctly infuscate; antennae black, scape pale 

 beneath. 



(HEMITELES) AENOPLEX COMP ACTUS (Ashmead). 



LTndcr the name Hemiteles compactus Cresson, Ashmead ^ included 

 this species in a key to new species of the genus Hemiteles. This is the 

 only published reference to the species except that in Dalla Torre's 

 Catalcgus Hymenopterorum, where it is accredited to Ashmead. The 

 specimen on which Ashmead undoubtedly based his characterization 

 of the species is in the United States National Museum. It is labeled 

 in Cresson's hand " com,'paeta Gr?'' and in Ashmead's hand " Hemiteles 

 comf actus Cr.''^ This specimen, although not so labeled by Ashmead, 

 must be considered the type of compactus Ashmead. The only de- 

 scription of the species consists in those characters in the key which 

 apply to it. These are as follows: "Wings hyaline, body entirely 

 black, antennae 24-jointed," the last undoubtedly variable. 



The species should be referred to the genus Aenoplex rather than to 

 Hemiteles. 



The following description is based on the type and two other 

 specimens : 



1 Proc. U. S. Nat. Mus., vol. 12, 1890, p. 398. 



