64 PROCEEDINGS OF THE ACADEMY OF [1899. 



4. First dorsal segment not densely pubescent; (front broader, if 



anything, than the distance between the anterior ocellus and 

 apex of clypeus; the latter as well as the labrum, mandibles 

 except apex, and inner orbits narrowly beneath, orange; legs 

 black, with black pubescence), .... ccesalpinice Ckll. 

 First dorsal segment more or less densely pubescent, ... 5 



5. Clypeus and labrum pale, 6 



Clypeus and labrum black, the former with a carina extend- 

 ing from base almost to apex; mandibles and scape black; 

 (labrum acuminate at tip; first joint of flagellum a little 

 shorter than the united length of the four following joints; 

 pubescence of four hind legs entirely black), subhyalina n. sp. 



6. Width of front, if anything, greater than the distance between 



the anterior ocellus and apex of clypeus; greater part of legs 

 red, their pubescence black, except on anterior femora and 

 tibife; apical margins of dorsal abdominal segments 2 and 3 

 laterally with pale pubescence; (clypeus, labrum, inner 

 orbits beneath and mandibles, except apex, orange), 



rhodopus Ckll. 



Width of front less than the distance between the anterior 



ocellus and apex of clypeus; legs black, or dark brown, . 7 



7. Width of clypeus anteriorly scarcely greater than its length in 



the middle; labrum comparatively small, subtriangular, sub- 

 acuminate at tip; pubescence on thorax beneath pale, 



Cockerellii n. n. {=:Hoffmannseg(jice CW\. 9.) 

 Width of clypeus anteriorly greater than its length in the mid- 

 dle; labrum larger, semilunate, its apex broadly and roundly 

 slightly emarginate; pubescence on thorax beneath dark 



brown or blackish, atriventris n. sp. 



MALE 3. 



1. Apex of dorsal segments broadly margined with testaceous. 2 

 Abdomen deep black, margins of segments not at all testaceous, 3 



2. First and second segments broadly fasciate with pale reddish- 



yellow, which color also marks the sides of abdomen ; segments 

 3-5 pale testaceous at apex; pubescence very dense, com- 

 pletely concealing sculpture of thorax. Length 21 mm.. 



Morsel Ckll. 



