242 On the Hymenoptera of the Genus 



basal membrane yellow, forming a band over first segment 

 of abdomen ; legs yellow ; base of posterior coxae, apex of 

 femora, and tibia?, black; feet in some cases black ; wings 

 faintly clouded ; nervures piceous ; stigma and costa at tip 

 lighter. 



^ Resembles female, but the rufous band is wanting. 



Hab. Connecticut, Massachusetts (Mr. Scudder), New 

 York, Pennsylvania (Dr. Clemens). Maryland (Mr. Uhler), 

 Florida. 



Twenty specimens examined. This is allied to A. bifas- 

 ciatus of Say. But the marks on that are white ; the V 

 spot and the marks on the pleura are not mentioned, nor 

 the yellow basal joint of antennae, and he places the rufous 

 band on the fourth segment of the abdomen only. 



Sp. 12. A. intermedius. Nov. spec. Black ; basal joint 

 of antennae yellow ; spot on pleura before anterior coxae, 

 scutellum, and basal membrane, yellow ; and a rufous 

 band on fourth segment of abdomen. (Long. 0.30 in. to 

 0.35 in. Ex. alar. 0.60 in. to 0.70 in.) 



9 Body black ; antennae about tv/o thirds the length of 

 those of A. bicincfus, and more slender ; basal joint of 

 antennae beneath, disk of clypeus, basal half of labrum, a 

 spot at base of mandibles, and the palpi, pale yellow ; 

 clypeus dotted with red, deeply emarginate; head, protho- 

 rax, and pleura, roughly punctured, and shining with fine, 

 close hair ; wing-scale, edge of collar, a small round dot 

 on pleura, before the anterior coxae, the scutellum, two 

 dots behind, and basal membrane, yellow ; fourth segment 

 of abdomen dark rufous ; legs yellow ; the apical half of 

 posterior femora, tips of tibia?, and feet, black ; wings 

 faintly smoky ; base of stigma pale. 



S Resembles female, except that the antennae are much 

 stouter, the two basal joints yellow ; clypeus and labrum 

 yellow ; rufous band on abdomen wanting, and all the 

 coxae black at base. 



