I7O ASHMEAD 



TABLE OF SPECIES. 



Species not mostly black, the clypeus pale yellow or the abdomen 

 is more or less red or banded with red 7 



Species mostly black or the head, thorax and abdomen are black. 



Antennae 2O-jointed or less 4 



Antennae more than 2O-jointed 2 



2. Antennas less than 24-jointed.. 3 



Antennas 24-jointed. 



Legs mostly black, the sutures of trochanters, knees, tibiae sometimes 

 beneath, tibial spurs, and apices of tarsal joints testaceous. Male. 



E. perplexus. 



3. Antennae 2i-jointed; legs more or less black, all coxae always 



black. 



Antennal joints 19 to 20, not longer than thick ; tips of anterior and 

 middle femora, their tibiae and tarsi and the hind tibiae testaceous ; 

 hind tarsi fuscous. Male E. popofensis, 



Antennal joints 12 to 20, about equal, all a little longer than thick; 

 anterior and middle legs (except more or less of middle femora 

 basally, rarely the anterior femora basally), and hind tibiae testa- 

 ceous E. niger. 



4. Antennae i9-jointed 6 



Antennas 2O-jointed. 



Front and middle coxae, except the middle sometimes at 



base, pale ferruginous or yellowish 5 



All coxae black. 



Legs mostly black, the sutures of trochanters, the knees, tibial spurs 

 and apices of tarsal joints testaceous ; sometimes most of the front 

 femora, apices of middle femora, all tibiae and the anterior and middle 

 tarsi are testaceous ; antennal joints 13 to 19, a little longer than 

 thick. Male E. sanctipauli. 



5. Legs mostly pale ferruginous, with the hind pair, except their tibiae 



basally, black, the front and middle tarsi subfuscous ; antennal 



joints 16 to 19 very little longer than thick. Female E. ungce. 



Legs ferruginous, with the first joint of hind trochanters and basal 

 two or three joints of hind tarsi, subfuscous ; antennal joints 16 

 to 19 about twice as long as thick. Female E. alaskensis. 



6. Legs mostly black, with the sutures of trochanters, knees, hind tibiae, 



except apically, and the extreme apices of tarsal joints, testaceous ; 

 antennae black, shorter than in previous species, joints 6 and 7 & 

 little longer than thick, joints 8 to 18 quadrate, not longer than thick. 



Female E. kincaidi. 



Legs mostly black, with the sutures of trochanters, knees and all 

 tibiae, flavo-ferruginous, the tarsi more or less fuscous ; antennal 

 joints 6 to 9 more than twice longer than thick, joints 10 to 18 all 

 longer than thick. Female E. insttlaris. 



