HENRY J. FRANKLIN. 163 



and on the occiput. Malar space much shorter than its width at apex, 

 nearly one-seventh as long as eye. Clypeus rather coarsely and densely 

 punctate, largely clothed with reddish pile. Ocelli rather large, 

 placed somewhat below supra-orbital line and slightly above nar- 

 rowest part of vertex, the lateral ones somewhat nearer to the mar- 

 gins of the eyes than to each other (transitional Bombias in this 

 respect). Third antennal segment longer than fifth, the fifth longer 

 than the fourth. 



Thorax. — Clothing of dorsum, mesopleura, metapleura and sides of 

 median segment all rufo-ferruginous. 



Abdomen. — Dorsum: segment one entirely rufo-ferruginous; seg- 

 ments two and three usually entirely rufo-ferruginous, but sometimes 

 darkened considerably by a strong admixture of black hairs ; segment 

 four entirely rufo-ferruginous ; segment five usually entirely rufo- 

 ferruginous, but sometimes with considerable dark fuliginous pile on 

 sides ; segment six sometimes rather strongly rufo-ferruginous, but 

 usually mostly dark fuliginous or black. Venter dark, its pile some- 

 times mostly reddish and sometimes mostly dark. Hypopygium with- 

 out a median carina. 



Wings. — Only moderately dark, with very slight violaceous reflec- 

 tions. 



Legs. — Coxae, trochanters and femora all with much rufo-ferrugin- 

 ous pile, at least on their lower sides. Tibia, including the corbicular 

 fringes, all black. Metatarsi with no long fringes. 



Worker. Head. — Face bearing a mixture of ferruginous and black 

 pile, the former being predominant. Occiput with a strong admixture 

 of ferruginous pile with the black. Ventro-lateral sides of head dark, 

 with ferruginous pile admixed and rather predominant. Structural 

 characters as in queen, but with ocelli practically on supra-orbital line. 



Thorax. — Coloration of pile like that of queen. 



Abdomen. — Dorsum : segment one rufo-ferruginous ; segments two 

 and three with pile appearing mostly dark fuliginous (the basal por- 

 tions of the hairs that make up this pile are really rufo-ferruginous 

 while their apical portions are very dark brown); segment four mostly 

 rufo-ferruginous ; segments five and six mostly dark, but with consi- 

 derable cinereous hair. Venter dark, with the apical fringes of the 

 segments mostly rufo-fuliginous. 



Whigs. — Slightly lighter than those of queen. 



Legs. — Much as in queen, but the femora as a rule with less reddish 

 pile, being mostly dark except the lower sides of their basal portions. 



Male. Head. — Face bearing a mixture of tawny and dark brown 

 pile, that covering the greater part of the clypeus being almost entirely 

 tawny. Occiput and sides of head entirely dark brown or with an ad- 

 mixture of tawny pile. Malar space about half as long as its width at 

 apex. Third antennal segment somewhat longer than fifth, the fourth 



TRANS. AM. ENT. SOC, XXXIX. 



