376 Dr. A. S. Packard; Jr's Revision of the 



at extreme tip, and at base; antenna? with scape either entirely yel- 

 low beneath and brown above, or yellow on the basal third beneath ; 

 basal joint of flagellum shorter, more spherical and darker than in B. 

 impressifrons; terminal joints sub-fuscous, where in B. impressifrons 

 tbey are dark; joints somewhat slenderer. Thorax and wings as in B. 

 impressifrons, tubercle not yellow; prothorax and scutellum yellow. 

 Propodeum with a sublimate enclosure bounded by a punctured line ; 

 posterior region smooth above, rugose on the sides, which are exteriorly 

 cariuated. Fore trochanters fuscous, femora fuscous, yellow at tip and 

 beneath; tibiae and tarsi yellow; middle femora brown, with a poste- 

 rior reddish stripe, tipped broadly with yellow; hind femora entirely 

 brown, tibiaj yellow, with an apical brown spot; tarsi pale testaceous 

 brown, with pale testaceous tips. Abdomen sub-pedunculate, thicken- 

 ing to just before tip; tarsal joint narrowing rapidly towards its inser- 

 tion into the thorax ; posterior third of each ring slightly contracted 

 and smoother than the rest of the ring. 



Mass., (Coll. Norton). New York, (Norton). 



Its black abdomen, yellow and reddish fore-legs, and fuscous poste- 

 rior stripe on the middle femora, will separate this species from B. im- 

 pressi/rons, besides the transverse line on the enclosure being deeply 

 punctured by minute fossae. Having no female, and the two males 

 above described being without the yellow spot on the tubercle, there is 

 yet a doubt whether this be the scutellatus of Say or not, though other- 

 wise agreeing with his description. 



Blepharipus Harrisii. Pack. 



Crabro jmsillus, Harris, Cat. Ins. Mass. p. 68, (1835). 



% . Head as described in B. impressifrons, the impressed line in 

 front of the ocelli being present, the front narrow, depressed ; ocelli in 

 an equilateral triangle, but the head is shorter and more transverse. 

 Orbits and clypeal region silvery, the latter narrower than in the pre- 

 ceding species, proportionally longer and more strongly carinated than 

 in B. impressifrons. Mandibles slender, bidentate, tip deeply grooved be- 

 neath the teeth, black, tip rufo-testaceous. Joints of palpi slender, cy- 

 lindrical, testaceous. Scape of antennae long and slender, clavate, an- 

 gular, dark brown above, beneath obscurely yellow, basal joint of the 

 flagellum brown, not black, filiform, slender, and longer than in B. im- 

 pressifrons. 



Prothorax narrower than in B. impressifrons, with a yellow stripe 

 slightly interrupted by a mesial notch. Mesothorax quite smooth, 

 polished, slightly and sparsely puuetured, with long hairs arising from 

 them ; entirely black. Propodeum with a distinct semi-ovate enclosure. 



