* 



r 



North American Hymenoptera. 393 



Length over one fifth of an inch. . 



$ Head beneath the insertion of the antennae, pale 

 yellow : antennce beneath dull ochreous ; basal joint be- 

 neath, pale yellow : collar ^ immaculate : iibice and tarsi 

 pale yellowish, the former with a black spot near its tip. 



Length about one fifth of an inch. 



The spots on the head of the female, are like those of 

 H. variegdtiLs, F., but it is a very different species. 



t 



AndrexA; Fabr. Klug. 



I 



A. vaJidd* 9 Entirely black, immaculate ; hair very 

 short, dense, giving to the thorax and head a velvet-like 

 appearance : head with the hair of the cheelcs, tip of the 

 nasus and outer inferior edge of the mandibles longer : 

 mandihles with a rather strong tooth before the tip : wing- 

 scale glabrous : wings purplish-fuliginous, the darkest 



w 



portion at tip ; stigma honey-yellow : metathorax, surface 

 not concealed by hairs, with separate punctures and 

 except at base, canaliculate in the middle ; at base is a 

 transverse space of much larger, confluent punctures, 

 behind which space is a narrow glabrous space at the 

 origin of the groove ; lateral margin hairy : iergum with 

 very short hairs not concealing the surface ; first segment 

 concave and deeply canaliculate on the anterior face j 

 segments "with a transverse, impressed, submarglnal, pos- 

 terior line ; on the first and second are two : venter, seg- 

 ments with long, rather dense hairs. 



Length seven tenths of an Inch. 



A large and fine species. 



VOL. I. PART IV. 51 



1 rt 



