340 PROCEEDINGS OP THE NATIONAL MUSEim. vm,. xxxi. 



to the petiole is an impressed line in some cases; posterior end thickl}', 

 rather finely punctured and abundantly clothed with long- hairs; sides 

 of the median seo-ment and mctapleura oblicpioly aciculate, the acicula- 

 tions coarsest on the median segment next to the metapleura; covered 

 with quite long hairs; mesopleura also o])liquely aciculate, except the 

 portion above the anterior and middle coxjv, where it is less pronounced 

 (the amount and strength of the aciculations vary greatly in different 

 specimens); mesosternum with a median impressed line; aciculate 

 between and just in front of the coxa% with numerous rather coarse 

 punctures and short hairs; petiole shorter than the hind coxa^, straight, 

 wnth numerous tine punctures and short hairs; an impressed line runs 

 forward from above the posterior coxa nearly horizontally and below 

 the stigma. 



Abdomen. — Stout, high, sharply pointed behind, rising nearl}^ ver- 

 tically from the petiole; above, stigma of the first segment in the 

 middle or nearly so; surface smooth, slightly glistening, with a few 

 rather fine punctures, and on the last three plates with a few hairs, 

 longest on the last one; fourth and fifth plates very slightly emargi- 

 nate behind; last plate rounded acuminate behind, covered with ver}' 

 closely set, minute punctures; beneath somewhat sericeous, with scat- 

 tered punctures and short hairs; fourth and fifth plates somewhat 

 emarginate behind, the latter quite strongly so; last plate conical, very 

 convex, and with a number of long hairs. 



Wings. — Fuliginous, lighter on the margin in some cases; fore 

 wing; second cubital cell quite broad; third cubital extending almost 

 as far as the end of the radial cell; second transverse cubital and 

 second recurrent veins sometimes though not usually interstitial; hind 

 wing; transverse median vein slightly arched, making about a right 

 angle with the median vein; discoidal vein not interstitial; cubital vein 

 usually (always?) obsolete beyond the transverse cubital; teguhv black, 

 tinged with ferruginous behind, sericeous, rather glistening. 



Legs. — Coxfe rather short, stout, black, with traces of whitisli seri- 

 ceous on the two hinder pairs in some lights; with numerous coarse 

 punctures and a few hairs, stouter toward the outer end of the seg- 

 ment; trochanters black, the hinder pairs closely, minutelj^, and also 

 coarsely punctured; anterior pair quite closely, coarsely punctured; 

 <»'l bearing a few rather coarse hairs; femora stout, longer than their 

 tibiae except the hinder pair; front pair smooth, glistening, with 

 scattered punctures and hairs which are longest in a row along an 

 impressed line on the inner face; the other femora sericeous, with 

 scattered punctures and short hairs; fore tilnte glistening, with numer- 

 ous coarse spines and long hairs, the latter chiefly on the inner and 

 hinder faces; middle and hind tibise sericeous and coarsely spined; 

 hinder face of the hind tibiaj densely brown sericeous; hind tibial 

 spine with coarse, blunt, spaced teeth on its outer half; fore tarsi 



