HENRY J. FRANKLIN. 441 



Legs. — Usually all dark, but the trochanters and bases of femora 

 often with some light pile on their lower sides. 



Worker. — Much like the queen, but with lighter (subhyaline) wings; 

 a black interalar band usually present ; mesopleura usually entirely 

 covered with yellow pile ; metapleura and sides of median segment 

 usually with little other than light or yellow pile ; venter tending to 

 have rather more light pile on apical portion than in case of queen. 



Male. Head. — Broadly rounded trapeziform. Face with a patch 

 of usually strongly yellow pile running from the bases of the antennae 

 down over the clypeus, sometimes, however, with a strong admixture 

 of dark hairs ; above the bases of the antennae sometimes black and 

 sometimes with a tuft of yellow hair. Occiput yellow ; sides of head 

 behind the eyes sometimes entirely dark, but usually with more or 

 less yellow pile connecting with the yellow on the occiput. Malar 

 space not more than half as long as its v/idth at apex. Clypeus usu- 

 ally mostly covered up with pile. Eyes somewhat swollen and bulg- 

 ing out from sides of head. Ocelli placed at not more than one-fourth 

 of the distance from the supra-orbital line toward the bases of the an- 

 tennae. Each lateral ocellus separated from the margin of the eye by 

 about its own diameter. Flagellum of antennae a little less than three 

 times as long as the scape ; third antennal segment about equal to the 

 fifth, the fourth shorter than either. 



Thorax. — Front part of dorsum and scutellum covered with yellow 

 pile. A broad black interalar band usually present but often partly 

 or entirely obliterated, the whole dorsum then being yellow. Meso- 

 pleura covered with yellow pile to the bases of the legs. Metapleura 

 and sides of median segment with mostly yellow pile, but often with 

 some dark hair. 



Abdomen. — Dorsum : segments one and two covered with yellow 

 pile ; segments three and four covered with ferruginous pile ; seg- 

 ments five, six and seven yellow, but often with an admixture of black 

 or ferruginous hairs. Venter very variable, sometimes mostly black 

 and sometimes with mostly light pile, but always with the apical mar- 

 gins of the segments fringed more or less with light hairs. 



Genitalia. — Outer spatha (fig. 122) short and broad ; the anterior 

 margin deeply incurved ; anterior lateral projections rounded at their 

 ends ; side margins nearly straight ; posterior margin broadly, but not 

 deeply, incurved in the middle ; apical portion of ventral surface 

 scattered over with hairs, these being longest on the sides. Inner 

 spatha (fig. 55) with anterior margin, except median projection, 

 straight ; the lateral margins converging sharply toward each other ; 

 apex narrow and rounded and bearing rather dense hair on its ventral 

 surface ; a single median fenestra of varying shape usually present. 

 Claspers (figs. 79 and 84) with branches rather narrow toward the 

 tip and rounded at the end as viewed from dorsal side ; volsellae of nearly 

 even width throughout, but narrowing near their ends to pointed tips 



TRANS. AM. KNT. SOC, XXXVIII. (56) 



