N0.14S7. NOnrir AMEllTf'AN l>T(iriER WASJ'S—FERNALD. 837 



emarg'inate; posterior half of the terminal plate with noticeable punc- 

 tur(\s and black hairs. 



Whigs. — Dark fuliji-inous with violet or even greenish reflection in 

 some lights; fore wing; end of radial cell rounded; end of third 

 cubital cell extending as far as the end of the radial; second recurrent 

 vein joining the cubital near the second transverse cubital; hind wing; 

 transverse median vein nearly straight, at right angles with the 

 median; the discoidal vein not interstitial; cubital vein with onl}" a 

 short stub l)eyond the transverse cubital which joins both the cubital 

 and radial nearly at right angles and is but slightl}' curved; the radial 

 vein well developed beyond the transverse cubital; tegula? black, 

 slightly whitish pubescent in the center. 



Legs. — Long, ])lack; fore coxfe and trochanters coarsely punctured 

 and bearing quite stout, black hairs; fore femora glistening, with a 

 row of stout hairs in a longitudinal internal groove and shorter ones 

 on the opposite side and above; fore tibiic with stout spines and with 

 long hairs on the inner surface; fore tarsi with stout spines, particu- 

 larly at the tips of the segments; fore metatarsus with eight comb 

 teeth; tarsus whitish sericeous above; middle and hind tarsi coarsely 

 punctured (but less so than the fore tarsi); with black hairs; sparsely 

 whitish sericeous; trochanters the same; middle and hind femora 

 sparsely, linely punctured, with scattered, black hairs; glistening; 

 middle and hind tibije glistening, with scattered, rather short, stout 

 spines and a few fine hairs; the hind tibife heavily brownish sericeous 

 tiehind; liind tibial spine with coarse, blunt, spaced teeth; claws with 

 five teeth, the two outer and the outer part of the claw with a slight 

 ferruginous tinge. (Plate IX, fig. 19.) 



In some cases there is no dark shade on the abdomen; the pubescence 

 on the clypeus and frons is more golden; there is a trace of whitish 

 pubescence on the prothoracic lobe near the fringe; the anterior tooth 

 of the mandil)le is not sharply separated from the middle one; the 

 mesonotal stri;e nearest the sides of the plate are nearly parallel to 

 the edge of the plate, leaving an unstriated triangle in front; the 

 wings may be strongly fuliginous and the abdomen a deeper ferru- 

 ginous; and two punctures between and behind the eyes and ocelli 

 may be quite strongly marked. 



Male. — Diflers from the female as follows: Clypeus and frons more 

 evidently pubescent; with a broader depression above the notch; the 

 large puncture behind the line from the posterior ocelli to the eyes less 

 marked; cheeks narrower in proportion to the width of the eye; more 

 rapidly tapering I )elow; relative lengths of filament segments ^^g, ^%, ^%, 

 sSi i\\ occasionally a black spot may be seen on the dorsal surface of 

 the abdomen; sixth ventral abdominal plate with its hind corners 

 rounded, its hinder margin broadly, slightly emarginate; both sur- 

 faces of the abdomen rather coarsely whitish sericeous; the first trans- 



