AMERICAN HYMENOPTERA. 79 



C'raibro siiowii n. sp. 9- — Head with rather fine, though distinct, sepa- 

 rated punctures al)ove. on the front the strite indistinct ; space hetween eyes at 

 their nearest point of convergence about equal to half the length of clypeus in 

 the middle ; first joint of flagelluni a little shorter than the two following united ; 

 pronotnm longer than in coijttatns, strongly sulcate, the lateral tooth small, though 

 distinct; punctuation of the dorsulum rather fine and separated, that of meso- 

 pleune similar, tliough sparser, not tending to striate on episternum inesopleurale ; 

 middle segment with sparse, not very strong ridges, much fewer and feebler than 

 in cogudtiis, and scarcely forming fovese, central longitudinal channel deep, scarcely 

 broadened basally. not extending on the posterior face, the latter not coarsely 

 sculptured, but with some coarse folds or ridges apically : tibiae and tarsi strongly 

 spinose. Black ; mandibles medially, clypeus entirely, scape beneath, two spots 

 on pronotum. tubercles, scutellum anteriorly, apex of all femora, anterior and 

 medial tibiae externally, base of hind tibise. base of tarsi more or less, a spot at 

 each side of dorsal segments 1-4, and a lateral spot on ventrals 2-4, yellow ; wings 

 subhyaline, slightly darker at a])ex ; clypeus and cheeks with silvery pubescence. 

 Length 8 mm. 



% . — Scape of antennse compressed, thickest medially, narrow at base and apex ; 

 flagellum rather slender, not tliickened medially, distinctly fringed with hairs 

 beneath, the fii-st and second joints about equal in length ; pronotum strongly 

 dentate at the sides; sides of middle segment more finely striated than in cog- 

 nafits : otherwise the middle segment is very coareely sculptured, the longitudinal 

 central furrow less distinct than in the female, but is longer, not as long or as 

 distinct as in cognntns, however ; no long, white hair on mesosternum and fore 

 femora, a short, appressed, pale pubescence on mesonotum, however, the white 

 pubescence, peculiar to the fore and medial tarsi of cognatiis ( ■£ ) is wanting in 

 snowii ; spots of abdomen narrower than in the female ; no spots on thorax, ex- 

 clusive of the tubercles; coxje and trochanters entirely black. Length 7.5 mm. 



Douglas County, Kansas, 900 feet (Snow). Its general seul[)ture 

 is finer than in coguatus. May be })laced between coynatus and 

 hilavis. 



Crabro harriwii Pack. 



Belongs to group minimus, and comes near scntellatm and letitus. 



% . — Anterior margin of clypeus angularly produced in the middle ; front dis- 

 tinctly punctured, the medial furrow unusually wide; pronotum not strongly 

 crested, lateral angles not strong ; episternal suture of mesopleui-aj nearly straight ; 

 furrow at base of middle segment foveolate, as is also the furrow which bounds 

 the enclosure outwardly: between the enclosure and the sides the middle seg- 

 ment is distinctly striated, posterior face not at all rugose, the lateral ridges 

 becoming obsolete above and internally margined by a series of strong foveie ; 

 head and thorax above with rather dense long hair; scape in front, two small 

 spots on pronotum, tibiae and four anterior femora in part, yellow ; fore femora 

 entirely dark, tarsi dark testaceous. 



The foregoing description was drawn up from the type of this 

 species. 



TRANS. AM. ENT. SOC. XXIII. MARCH, 1896. 



