North American Hymenoptera. 221 



m 



hardly longest: mouth dull piceous : wing-scale dull 



piceous : win^g-s luliginous, with a violaceous iinge : feet 

 white ; thighs in the middle and coxae black. 



Length less than three twentieths o/ an inch. 



The 'joints of the antennae are shorter and more com- 

 pressed than those of any other species I have seen. 



4. E. recms. Antennas, basal joint white; pectus 



and feet white. 



Inhabits Indiana. 



^Head black; basal joint of the antennae, nasus, 

 labrum and mouth white : thorax black, with a white 

 collar and wing-scale : wings hyaline, ner^-ures fliscous : 

 tergum, on the basal half white, with three dilated black 

 bands slightly interrupted in the middle ; terminal half 

 somewhat fulvous, with about two marginal black spots 

 and a larger double one each side near the tip ; lateral 

 processes °at tip obvious : pectus white : :plmra with a 

 dilated black line : feet white ; inteimediate tibiae and 

 tarsi with a black line ; posterior thighs tinged with 

 honey-yellow ; their tibi^ and tarsi dusky or blackish. 



Length one fifth of an inch. 



'o 



XiPHYDRiA, Latr. 



1 . X. maculata. Abdomen black with seven lateral 



white spots. 



Inhabits Indiana. , r ^ • u 



^Body black: head punctured on the frorrt; with 



two small spots above the antenna, anterior and inferior 



orbits extending in a line behind the eye, base of the 



oraoc 



about 



pot before the wings : tvings immacu 



