MACLURIAN LYCEUM. 373 



[Prom Contributions of the Maclurian Lyceum to the Arts and Sciences. 

 Vol.1., Philadelphia, pp. 67—83.] 



A Description of some new species of Hymenoptera of the United States. 



Read March 3, 1828. 



AULACUS Jurine. 



A. FASCiATUS. — Wings violaceous with hyaline band. 



Inhabits Ohio. 



Body black; thorax confluently punctured in transverse 

 grooves ; wings violaceous with a hyaline band on the middle, 

 hardly reaching the anal margin ; abdomen much compressed ; 

 oviducts longer than the abdomen, much incurved at tip. 



Length half an inch. [68] 



ICHNEUMON Linn. Fabr. 



1. I. PARATA. — Antennae black with a whitish annulation ; 

 iergum yellow, with five or six blackish bands. 



Inhabits Indiana. 



Head yellow j disk of the vertex and the occiput black j an- 

 tcunge black; basal and second joint beneath and 15, IG, 17, 18, 

 19 and 20 joints pale yellowish: thorax black; band on the 

 collar, line on each side extending to the wings, and interupted 

 before, and a small quadrate spot on the disk, yellow ; scutel and 

 a small spot behind it, yellow : metathorax, posterior disk, yellow ; 

 wings somewhat dusky with fuscous nervures ; stigmata pale 

 brownish ; central cellule pentangular and transverse, not at all 

 oblique, the superior side very short ; tergum, basal segment 

 with the basal incisure, and spot on the disk near the tip, black ; 

 remaining segments with a blackish band at their bases more or 

 less emarginated in their middles; beneath yellow; pectus and 

 postpectus with the transverse incisure, black ; posterior feet, 

 coxae above, excepting at tip, thighs, excepting at base, tibiae at 

 tip and first and second joints of tarsi, black; venter with paler 

 and less perfect bands than those of the tergum. 



Var. o. Intermediate thighs black on their middle above. 



Length two-fifths of an inch. 



