34 Harry Scott Smith 
Philanthus politus Say. 
1824. Philanthus politus Say, Long’s Expedition, ii, Appendix, p. 342. 
1859. Philanthus politus Say, Leconte edition, i, pp. 113 and 232. 
1865. Philanthus politus Cresson, Proceedings of the Entomological 
Society of Philadelphia, v, p. 94. 
Warbonnet canyon, July 21, 1901, on Borage (M. Cary). 
May be distinguished from the above species by the slightly fus- 
‘cous wings. 
Philanthus albifrons Cresson. 
1865. Philanthus (Anthophilus) albifrons Cresson, Proceedings of 
the Entomological Society of Philadelphia, v, p. 101. 
1904. Philanthus albifrons Viereck & Cockerell, Journal of the New 
York Entomological Society, xii, p. 144. 
Both sexes from Warbonnet canyon and Glen, taken during the 
months of July and August. Although these specimens have the 
markings of a decided lemon yellow instead of white, the other 
characters, such as sculpture, lead me to place them here. The 
reddish femora in the female serve as a superficial character to 
separate this species from its allies. | 
Philanthus tarsatus, n. sp. 
9. Length 9 mm. Ground color black. Front above antennae finely 
and closely striato-punctate; occiput and vertex closely and finely punc- 
tured; hind ocelli about as close to each other as distance from them to 
inner eye margin; anterior margin of clypeus with four distinct lobes, the 
two central ones much the larger and the emargination between them quite 
deep; malar space about one-third as long as width of mandible at base; 
mandibles rather short and bluntly rounded. Collar of prothorax with 
corners rounded and with a strong impression centrally. Mesonotum 
finely and closely punctured and with a strong longitudinal impression 
medially; scutellum strongly convex, the disk more sparsely punctured 
and with a distinct median impression; postscutellum almost impunctate; 
mesopleura with coarse irregular punctures, the spaces between them 
being minutely punctured, punctures of upper portion of mesothoracic epi- 
sternum the most dense; metanotum and metapleura with medium punc- 
tures, the metanotum bearing an impression centrally just before the trun- 
cation, the-latter region being impunctate, forming a V-shaped enclosure; 
posteriorly the metathorax has three distinct impressions. Abdomen 
rather finely punctured, close basally and rather sparse apically, the dorsal 
surface of the pygidium impunctate; venter with medium close punctures. 
Tibiae and tarsi strongly spinose, the tarsal comb consisting of eleven or 
twelve spines. 
356 
