204 WILLIAM J. FOX. 



more so tliaii in the species iibov'e mentioned. Length of body, .26; head and 

 thorax tofiether, .13; al)domea, 13 inch. 



" Differs from the species with whicli it lias been compared in tlie 

 description given above, in its shorter more transverse head and 

 slenderer body, in its fore femora being entirely yellow above; in 

 the sculi)turing of the propodeum, where in B. impressifrons it is 

 entirely smooth. The hind tibi?e are much smoother, scarcely spinu- 

 lated. It will also be readily distinguished by the want of tlie pale 

 testaceous posterior margin of the alxlominal segments. 



"Cambridge, Mass. (coll. Hai'ris). 'June and August 15, on 

 flowers.' Harr. MS." 



95. Crabro inaciilattis Fabr. 



Crahro iinicidiitiis Faliricius, Ent. Syst. ii, p. 295. 

 "C. tliorace maculato, abdomine atro : maculis utrinque quatuor flavis, tibiis 

 flavis. 



" Habitat in America boreali Mus. Dom. Banks. 



"Medi'is. AntenniB nigra? prime articnlo flavo. Caput nigrum labio argenteo. 

 Thoi-ax niger striga antica, puncto sub alis .scutelloque flavis. Abdomen atrum, 

 nitidum maculis utrique quatuor transvei'sis, flavis. Femora nigra. Tibife flavae." 



9<i. Crabro obloiigii!^ Pack. 



Ci-iiliro ohloiKjas Packard. 1. c, ]i. 88, 9 • 

 " 9 • Closely allied to C. dngnlarls, head of much the same proportions, but 

 narrows a little behind and is throughout narrower as the entire body is. Eyes 

 a little nearer together; the convexity of the vertex and the grooving of the 

 front the same as in C mnjidariH. Antennal groove well marked, polished, on 

 each side a narrow edging of silken pubescence ; clypeus golden as in C. shuiidaris, 

 but the hairs are much finer, the lateral lobes are more triangular and silvery; 

 mandibles black, with the middle wedge-shaped area twice grooved towards the 

 base, where in C dngidaris it is smooth ; palpi slender, joints much longer and 

 slenderer by one-third than in the other species above named. Antennse as in C. 

 simjnlaris, scape entirely yellow, hardly as stout, joints of flagellum a little stouter. 

 Two square, yellow spots on the prothorax ; lateral tubercle yellow; mesothorax 

 entirely black above with no yellow markings ; surface of the scutum finely 

 striated ; scutellum and meta-scutellum highly i)olished. Propodeum much as in 

 C. sing hI aria, but the mesial furrow widens at the base, with similar lateral and 

 transverse rugse ; legs colored much the same ; within the hind tibia" a dark 

 stripe. Abdomen long, sides unusually parallel, giving it an oblong slope [shape ?] ; 

 with ten yellow fascife, those on the basal joint being simply dots, those on the 

 second ring much larger than the succeeding ones, not. wedge shaped, but ellip- 

 tical ; beneath very convex ; tip one-half as long as in C. singnkiris, the enclosed 

 triangular upper surface much longer and narrower than in the allied species. 

 Length of body, 64; head and thorax, .33; abdomen, .31 inch. 



"Gmn. (Norton). * 



" Dittersfrom C. dnguhiru in its much nari-ower and slender body, 



