1S65.] 103 



those on the first much the smallest ; the three following segments 

 with a broad, continuous bright yellow, apical band, more or less nar- 

 rowed ill the middle anteriorly; apical segment dusky yellow; beneath, 

 the second and three following segments are yellow, the apical middle 

 more or less dusky and the second with the basal corners black ; apical 

 segment dusky. Length 5J lines; expanse of wings 9^ lines. 



Hah. — Rocky Mountains, Colorado Territory. (Ridings.) Coll. 

 Ent. Soc. Philad. 



Two $ specimens; % unknown. This lovely and very distinct spe- 

 cies is readily distinguished from the preceding, by the yellow face, 

 the long continuous line on the cheeks, the two large spots on metatho- 

 rax and the yellow venter. 



The following species are unknown to me : — 



1 7. Philanthus solivagus, Say. 



Philanthus solivagus, Say, Bost. Journ. Nat. Hist, i, p. 383. 



" Black, with small punctures ; tergum fasciate on each segment. 



•' Inhabits Indiana. 



'' % Body black ; punctures numerous, small : hypostoma, anterior 

 orbits, to the emargination, and large spot above the insertion of the 

 antennae yelloAv: collar, margin yellow, slightly interrupted in the mid- 

 dle : stethidium immaculate : wing-scale yellow : wings veiy slightly 

 tinged with dusky ; nervures fuscous, towards the base and stigma 

 honey -yellow : tergum, segments having each a greenish-yellow band 

 on the posterior submargin, that of the first segment largest, the others 

 .subequal ; sixth segment immaculate : pleura, pectus and venter im- 

 maculate : knees, tibiae and tarsi yellow; posterior pair of tibiae with a 

 spot on the posterior tip, and their tarsi above tinged with ferruginous. 



" Ijcngth two-fifths of an inch." 



IS. Philanthus barbatus, Smith. • 



Philanthus barbatus, Smith, Brit. Mus. Cat. Hym. iv, p. 473. 



" Male. Length 5 lines. — Black : closely and rather finely punc- 

 tured on the face ; the vertex shining, the punctures scattered ; the 

 anterior ocellus placed in a fossulet ; the clypeus, anterior margin of 

 the face, inner orbit of the eyes not quite so high as their emargina- 

 tion. and a large ovate spot above the antennae, yellow ; the face fur- 

 nished with a long dark beard on each side of the clypeus or its ante- 

 rior margin. Thorax shining, sparingly punctured ; a spot beneath 

 the wings and the postscutellum yellow ; wings fulvo-hyaline, the ner- 

 vures pale ferruginous. Abdomen shining, the first segment with a 



