North American Hymenopt 



383 



more or less varied with bright yellow : venter w ith inter- 

 rupted bands. 



Length over half an inch. 



This was given to me by Nuttall. With the exception 

 of frontata and bidentdiOy Nob. this is the la 

 American species I have seen, and the much more dilated 

 bands of the tergum are distinctive. 



PhilanthuSj Fabr. Latr. 



r 



P. soJivagus. Black, with small punctures ; tergum 

 fasciate on each segment. 



Inhab. Indiana. 



$ Body black ; punctures numerous, small : hypos- 

 toma^ anterior orbits , to the emargination, and large spot 

 above the insertion of the antennee yellow : collar ^ margin 

 yellow, slightly interrupted in the middle : siethidium 



wings very slightly 



immaculate : 



wing-scale yellow : 



tinged with dusky ; nervures fuscous, towards the base 

 and stigma honey-yellow : tergum^ segments having each 

 a greenish yellow band on the posterior submargin, that 

 of the first segment largest, the others subequal ; sixth 

 segment immaculate ; pleura^ pectus and venter immacu- 



'hi(t 



and tarsi yellow : posterior pair of 

 tibiae with a spot on the posterior tip and their tarsi above 

 tinned with ferru£rinous- 



an 



I 



Rygchium, Spinola. 



1. R. baltedtum. $ Black, thorax and head varied 

 with ferruginous ; tergum with a yellow band. 

 Inhab. Indiana. 





