NORTH AMERICAN IIYMENOPTERA. 169 



surface, sides coarsely striated ; fore femora remarkably shaped, being fully three 

 times broader than long, flattened ; tibial shield large leaf-like, decidedly longer 

 tlian broad, obtusely pointed apically, the outer margin bilobate, or in other words 

 strongly emarginate medially, in color brownish, closely dotted with pale basally, 

 sparsely so on remaining portion ; first joint of fore tarsi scarcely longer than the 

 remaining joints. Black, including the scape, except extreme apex, and scutel- 

 lum and postscutellum ; spot on mandibles medially, clypeus more or less, two 

 sinuous spots on pronotum, tubercles, fore femora, medial femora apically, tibiie 

 except a spot within, basal joint of tarsi, two sinuous spots (ui alidominal segment 

 1, two broader spots on segment 2, long narrow spots on 3, and a band on seg- 

 ments 4 6, emarginate anteriorly and sometimes separated medially, yellow; sil- 

 very pubescence in the usual situations; wings subhyaline, slightly darker 

 apically. Length 10-11 mm. 



Canada ( Harringtou ) ; Maine and Massachusetts (Packard); 

 Long Island, New York (Ashniead); Illinois. Having one of 

 Packard's types before me I must take exception to his description 

 of the fore femora, he says, " (fore) femora twice as long as broad 

 ....," while in the specimen before me the femora are as described 

 above. 



46. Crabro latipes Sm. 



Crubro gryphas Harris, Cat. Ids. Mass.. p. 68 (teste Packard). 



Crabro latvpes Smith, Cat. Hym. Brit. Mus., iv, p. 396, % . 



Crabro latipes Cresson, 1. c, p. 477. 



Thyreopus latipes Packard, 1. c, p. 355, % . 



Thyreopus coloradensis Packard, ibid., p. 356, % . 



Crabro latipes Kohl, 1. c, p. 584. 



Crabro coloradensis Kohl, ibid., p. 585. 

 % —Head closely punctured, most coarsely so anteriorly, where it has the ap- 

 pearance of being striato-punctate ; space between hind ocelli but little less than 

 that between them and the nearest eye-margin, the space between the eyes beneath 

 at base of clypeus, fully equal to or slightly greater than the length of the clypeus 

 in the middle ; flagellum broadest by far towards the base, and narrowed to apex 

 from second joint, the first joint without a bunch of white hairs beneath ; cheeks 

 keeled beneath near the eye-margin, depressed, but not produced posteriorly ; 

 pronotum with a small tooth laterally, but not ridged anteriorly; dorsulum with 

 rather coarse, well-separated punctures, closest anteriorly ; mesopleurte more finely 

 punctured, the episterual suture not very strongly foveolated, furrow separating 

 the epimerum mesopleuralis from mesosternum present, but feebly developed ; 

 middle segment above and posteriorly rugose, most coarsely above, the basal series 

 of fovese. more prominent than usual, lateral ridges of posterior face strong, ex- 

 tending somewhat beyond the middle though not reaching the upper surface ; 

 first joint of medial tarsi nearly twice as long as the remaining joints united ; 

 tibial shield large, leaf-like, nuxch longer than broad, acuminate apically, its outer 

 margin trilobate, in color : apically yellow, with thi-ee broad, dark streaks, basally 

 black with several pale, narrow streaks ; first joint of fore tarsi more than twice 

 longer than the remaining joints united. Black ; mandibles, except apex, clypeus 

 more or less, scape anteriorly, fore trochanters, femora and tibiae in part, medial 



TRANS. AM. ENT. SOC. XXII. (22) JUNE, 1895. 



