152 E. T. CRESSON. 



punctured more sparsely so toward apex, gastrocoeli shallow and longitudi- 

 nally striated; third and following segments sparsely punctured or smooth 

 and shining. Length .40 — .45 inch. 



Hah. — Can., (Pettit); Mass., (Ridings). Closely allied to sngus 

 and pilosuhis ; from the former it differs by the posterior coxae be- 

 neath being destitute of the pubescent patch, and from pilosulits by 

 the much stouter legs, and from both by the shorter and stouter basal 

 joints of the flagellum. 



46. sagus, Cress. Trans. Am. Ent. Soc. i, p. 294, 9 . 



Hub. — Illinois. A shining black species, with annulus on an- 

 tennae, line on posterior orbits 9 j ^'^ beneath antennae, orbits and 

 scape beneath % , dot or line before tegulce, spot on scutellura, and 

 line on all the tibiae, white j wings clear or faintly dusky; coxal scopa 

 9 very large, covering nearly the entire under surface. Length S 9 

 .45 — .55 inch. 



The % described with 9 of this species, proves to belong to a new 

 species next described (prompfus), and differs from the true % of 

 sacjus principally by the scape being entirely black and the posterior 

 tibiae having an entire white annulus. 



47. promptus, n. sp. 



9- — Black, iiiesolhorax, scutelluni and apex of abdomen shining; annulus 

 on antennse, scutellum and rather broad annulus on all the tibiis interrupted 

 on two anterior pairs, white ; upper anterior orbits sometimes narrowly reddish ; 

 cheeks swollen ; antennte short, robust, with short, thick joints, third joint about 

 one and a half times longer than broad and subequal with the fourth, the joints 

 beyond annulus thickened; mesothorax sparsely punctured; scutellum broad, 

 flat, with a few scattered punctures, broadly truncate at tip, metathorax strongly 

 punctured, posterior face broadly not deeply excavated, lateral angles promi- 

 nent, central area nearly quadrate; wings tinged with fuscous, rather darker 

 at tips; legs robust, femora short, swollen, tips of anterior tibiaj and their tarsi 

 brown, apex of {)osterior coxjb beneath with a patch of short dense brown pubes- 

 cence; abdomen oblong ovate, second segment closely an(i finely punctured, 

 sparsely so at tip, third indistinctly punctured and remaining segments smooth 

 and shining; first segment broadly dilated at apex and sparsely punctured; 

 gastrocoeli subobsolete. Length .46 inch. 



^. — Face entirely, clypeus, spot on mandibles, palpi, orbits interrupted 

 anteriorly below ocelli and more or less on the cheeks, a narrow annulus on 

 antennfe, collar, upper margin of prothorax, short line beneath tegulte, scu- 

 tellum, four anterior tibiae more or less and a broad annulus on posterior tibise, 

 all white; scutellum rather convex; elevated lines on metathorax sharply 

 defined, the central area rounded anteriorly; wings darker at apex than in 

 female; abdomen more densely punctured, apex of first segment narrow, base 

 of second rugose, the gastrocoeli large, not deep but coarsely rugose; body, 

 antennae and legs much more slender than in female. Length .55 inch. 



Hab. — Mass., (Ridings); White Mts., N. H., (Morrison)- Sepa- 

 rated at once from sar/us by the white annulus on posterior tibiae 



