1938] 
The Genus Lithurgus 
155 
nearer edge of vertex than to eyes, cheeks narrower than 
eyes, all the tarsi very slender, hind femora short and 
rather robust, about equalling the combined coxa and tro- 
chanter in length, pulvillae absent on all the legs, the claws 
deeply cleft, seventh tergum forming a nearly equilateral 
triangle, the apex sharply pointed. 
Puncturation: Fine and densely crowded over face, 
clypeus, and median portion of vertex, more distinctly 
separated on vertex laterally, very fine and close, but not 
crowded, on cheeks; deep, close and distinct over most of 
thorax, but with evident shining spaces between, moderate- 
ly coarse, becoming quite fine and crowded on sternum; 
very minute and crowded on median abdominal terga, be- 
coming yet more fine and obscure toward the base, but quite 
coarse and distinct toward the apex. 
Color: Black; mandibular teeth reddened; apical tarsal 
joints pale ferruginous; spurs pale yellow; tegulae ferru- 
ginous; wings subhyaline, the nervures fuscous. 
Pubescence: White on head and thorax, but vertex and 
mesonotum with some very short and inconspicuous red- 
dish pubescence, hind margin of prothorax above with a 
narrow but distinct white fascia and tubercles fringed with 
white; second to fourth abdominal terga with white apical 
fasciae broadly interrupted medially, the fifth and sixth terga 
with entire white fasciae, pubescence of the discs black, 
sterna with longer thin, white pubescence, black on the 
sixth and on the fifth laterally, no ventral fasciae evident. 
1 $ , Corumba, Brazil, April. (H. H. Smith) [A. N. S. P.] 
Lithurgus albofimbriatus Sichel 
6 9, Nukahiva, Marquessas Islands, Aug. 1923 (Simeon 
Delmar) . 
Lithurgus rubricatus Smith 
1 9 , Bilode, Queensland, Australia, 9. V. 25 (F. G. Holli- 
day). [Univ. Minn.]. 1 $, Queensland (Smith coll. pres, 
by Mrs. Farren White, 99-303) [Brit. Mus.]. 
