148 WILLIAM J. FOX. 



arginiis. Head in both sexes witli strong, separated punctures, ex- 

 cept in one case ; sculpture of thorax in both sexes coarser than in 

 the allied groups. 



17. Crabro stirpicolus Pack. 



Craliro utirpicohr Packard, 1. c, p. Ill, % 9 ■ 



9. — Head with tolerably strong, separated punctures, close on the front, how- 

 ever; pronotum indistinctly dentate at the sides; dorsulum rugoso-punctate ante- 

 riorly, on posterior portion the punctures well separated ; scutelUnu with large, 

 separated punctures ; niesopleurse with large, scattered punctures, interspersed 

 with coarse strife ; middle segment above and behind coarsely striated, posterior 

 face with lateral ridges scarcely developed, sides indistinctly striated. Black : 

 spot on mandibles, scape, two spots on pronotum, tubercles, episternum raeso- 

 pleuralis in part sometimes, line on scutellum and metauotum either or both of 

 which may be entirely black, tips of femora, tibise entirely, or with a dark spot 

 within, basal joint of tarsi and an elongated spot on each side of dorsal abdominal 

 segments 2, 4 and 5, yellow ; third segment sometimes spotted, and in one speci- 

 men the second segment only is spotted; apical tarsal joints testaceous; wings 

 dark sul)hyaline. paler basally. Length 5 7 mm. 



^ . — Head more strongly punctured than in the female ; pronotum indistinctly 

 dentate at the sides ; dorsulum and mesopleui-se more coarsely sculptured than in 

 the female ; middle segment above coarsely rugose, less so on posterior face, the 

 latter separated from the upper surface by a distinct ridge, and ridged indistinctly 

 at the sides, sides strongly striated ; colored and marked as in the 9 • Length 

 5-6 mm. 



Canada (Provancher) ; New York ; New Jersey in August; Illi- 

 nois; Michigan (Davis); We.st Point, Nebraska (Barber); Texas. 

 It is said to make its nests in the stems of raspberry. 



18. €rabro spiniferus n. sp. 



9 . — Head rather finely and closely puiu-tured, more so in front, very strongly 

 margined posteriorly ; pronotum armed with a long, shai-p, tooth or spine on each 

 side; dorsulum coarsely punctured, closely so on anterior portion, posteriorly the 

 punctures separated ; scutellum with large, sparse punctures ; mesopleune coarsely 

 and closely striato-punctate ; middle segment closely striato-punctate above and 

 behind, much less coarsely so than the mesopleurte, posterior face with lateral 

 ridges wanting, sides delicately striated ; abdomen closely and rather finely, 

 though distinctly punctured. Black ; large spot on mandibles, scape except a 

 spot posteriorly, pronotum, slightly interrupted medially, tubercles, line on scu- 

 tellum and metanotum, either of which or both may be wanting, tips of femora 

 more or les.s, tibise except a line within and apex of bind pair, first joint of tarsi 

 except apex, and a large spot at each side of dorsal abdominal segments 2-5, yel- 

 low: apical tarsal joints blackish ; wings sul)hyaline, paler basally. Length 7 8 

 mm. 



'I .—Head closely punctured, but a little more strongly than in the 9 ; pi'o- 

 notum strongly crested, sharply spinose laterally : middle segment with the upper 

 surface separated from the posterior face by a series of strong foVese, posterior 

 face transversely rugose, indistinctly ridged laterally, sides strongly striated ; 

 colored and marked as in the 9 < excejjt that the scutellum and metanotum are 

 rarely spotted and the abdominal markings longer and narrower. Length 6-7 mm. 



