150 PIMPLINE ICHNEUMONIDAE 



beneath, the hind coxae are black on the lower side at the base and bear a 

 longer black mark on the apex above, on the inner side they are entirely 

 black except a small testaceous spot; the hind femora are infuscate toward 

 the apex, and more than the apical half of the hind tibiae is black, tarsi black, 

 testaceous in the middle. What appears to be the male from Panama differs 

 from the specimens from Nicaragua in having a broad white band on the 

 antennae close to the apex and the yellow on the head and legs brighter in 

 tint; there is no black on the coxae nor are the hind femora infuscate toward 

 the apex; the black on the hind is only on the outer side; and the abdomen 

 is broadly dilated laterally at the apex." 



This species was originally described by Cameron as Rhyssa 

 carinifrons but in the Genera Insectorum it is placed in Apecho- 

 neura, probably on account of the carina between the antennae 

 and its areolated propodeum. 



Genus PSEUDORHYSSA new genus 



Genotpye: Pseudorhyssa siernaia new species. 



This genus is characterized by its abdominal sterna being 

 entire instead of being separated by a median longitudinal groove. 

 It has an areolated propodeum consisting of three areas. The 

 nota of the second and third abdominal segments are laterally 

 bordered with a ridge forming a depression, which is not found in 

 the other Pimplini genera which have the transversely rugose 

 mesonotum. There is no carina between the antennae. 



Pseudorhyssa sternata new species 



Tijpe: 9 ; Toronto, Ontario, Canada. August 20, 1892. Col- 

 lection of the American Entomological Society, Type No. 4007. 



Six paratypes in same collection. 



The females of this species range from three-quarters of an inch up to an 

 inch and a quarter in length. The head is black, polished, and slightly punc- 

 tured. The clypeus varies in outline from unidentate to bidentate. Below 

 the antennae the face is brown marked by two parallel longitudinal yellow 

 bands, which extend from the base of the antennae to the clypeus. On the 

 base of each mandible is a yellow spot. The clypeus is rufous at its base and 

 darker at its tip. The palpi are yellowish-white marked with black. The 

 antennae are dark brown to black, and the scape has a yellow spot beneath. 

 The thorax is black and bears a number of short, erect, whitish hairs. The 

 pronotum is deeply excavated on both sides, highly polishetl and ahnost 

 impunctate. The first thoracic spiracle is bordered with yellow and this 

 color may extend forward for a short distance on the upper border of the 

 pronotum. The tegulae are yellow. The mesonotum is flat on top and is 

 separated from the prescutum, only by two short parallel longitudinal grooves 

 along its anterior portion. Posteriorly the prescutum is continuous with the 



