80 Dr. A. S. Packard, Jr's Revision of the 



Length of body, .56; head and thorax, .30; abdomen, .26 inch. 



Mass., (Coll. Harris); West Farms, N. Y., (Norton, Angus); Dela- 

 ware, (Coll-. Ent. Soc. Phil.) 



This species is thicker and stouter, with heavier bands, more coarsely 

 punctured and less striated than in C. arcuatus, and the two terminal 

 bands of the abdomen become separated; the golden pubescence ascends 

 much nearer the ocelli than in that species. It will also be distin- 

 guished by the antennae being yellow on the three basal joints, the legs 

 being nearly entirely yellow and the head more cubical. 



One specimen from New York has a distinct large ferruginous patch 

 on the base of the abdomen. 



Dr. Harris captured this species on the sands near Mt. Auburn, Cam- 

 bridge. He also found, July 27, 1836, a nest of this species made in 

 a rotten stump, which was " abundantly provisioned with Tabanus lineola 

 Fabr. and T. divisus Harris." MSS. 



Crabro aurifrons, Smith. 



C. aurifrons, Smith, Cat. Hym. Br. Mus. iv. p. 420. (1856.) 



9 . Head large cubical, vertex broadly convex, ocelli placed in a low 

 triangle, antennal groove shallow. Orbits and clypeus covered with a 

 silvery golden pvtbescence, which extends from the orbits into the mid- 

 dle of the groove, clypeus large, prominent, well carinated, longer than 

 in C. 10-macidahis. Mandibles stout, equally bidentate, rufous-yellow, 

 terminal third black. Antennae stout, filiform, not thickening towards 

 the tips, scape entirely yellow, including first aud basal half of the 

 second joint of flagellum, remainder black, sutures well defined. 



Prothorax narrow, smooth and rounded on the sides, slightly cari- 

 nated on each side of the mesial notch, yellow. Body minutely punc- 

 tured, with a minute gray pubescence, meso-scutum thickly punctured, 

 not striated ; a rufous yellow stripe on front edge of scutellurn ; meta- 

 scutellum concolorous. Propodeum uniformly finely striated, enclo- 

 sure lunate, nearly obsolete, mesial furrow narrow, tubercle yellow; 

 three rufous indistinct stains on flanks below the insertion of the secon- 

 daries. Tegulse testaceous, wings slightly clouded, nervures rufous. 

 Coxae tipped with rufous, femora all rufous. Legs stout, hirsute, tibire 

 and tarsi entirely yellow, apical joints of hind tarsi tipped with rufous. 

 Two basal joints of abdomen rufous broadly edged with black, with five 

 pairs of sinuate fasciae, tips mucronate, very compressed, deeply chan- 

 nelled with a dense stiff yellow hirsuties. The fasciae are more remote 

 above than in C. 10-maculatus. 



Length of body, .64 ; head and thorax together, .34; abdomen .30 inch. 



Florida, (Norton); " Georgia," (Smith). 



