KORTH AMERICAN HYMENOPTERA. 163 



and dotted with yellow; first joint of fore tarsi about as long as the remaining 

 joints united ; anterior trochanters beneath and femora entirely yellow; colored 

 otherwise as in 9 , the apical tarsal joints, however, testaceous, markings of ab- 

 domen narrower, a band on sixth dorsal and lateral spot on third ventral ; wings 

 somewhat darker than in 9 , the cloud at apex of marginal cell darker ; meso- 

 sternum with long, sparse, pale fuscous hair. Length 14 mm. 



Vancouver ; Washington : Seattle (O. B. John«)n) ; C'olovado. 

 The female may be distinguished from that of moiiUcola and largior 

 by its sculpture, particularly that of the head and me.sopleune ; the 

 I by the greater combined length of the four apical joints of flagel- 

 lum, the le.sser space between hind ocelli and paler markings of tibial 

 shield. 



37. Crabro nionficolHS Pack. 



Thyreopns monticoln Packard, 1. c, p. 367, 9 • 



Crabro monticola Kohl, 1. c, p. 585. 

 9 . — Head finely and closely punctured more coarsely so anteriorly ; space 

 between hind ocelli a little less than that between them and nearest eye-margin ; 

 pronotum very slightly margined anteriorly, the lateral tooth not strong ; dor- 

 sulum with rather strong iiunctures, well separated posteriorly, anteriorly close ; 

 epimerum mesopleuralis more sparsely punctured, the episterual suture strongly 

 foveolate; middle segment above with longitudinal, more or less irregular, ridges 

 or coarse strife., which swerve somewhat towards the sides, the medial furrow 

 broad, posterior face transversely rugose on apical portion, the lateral ridges but 

 tolerably developed, the sides indistinctly striated. Black, including clypeus; a 

 minute dot on mandibles near base, scape except spot posteriorly, two spots on 

 pi-onotum, tubercles, scutellum anteriorly more or less, tibise except spot within 

 and hind pair at apes, first joint of tarsi, a sinuous .spot on each side of the first 

 abdominal segment, wedge-shaped spot, pointed internally on each side of second, 

 narrower spots or lines on third and fourth also pointed within, a band on seg- 

 ment five emarginate on each side anteriorly, and irregular spots on second ven- 

 tral segment yellow ; head and thorax with a tolerably thick and long, pale fus- 

 cous pubescence : wings fusco-hyaline, paler basally, nervures and stigma dark 

 testaceous. Length 13-14 mm. 



New Hamp.shire (Packard); Canada (Provancher) ; Virginia; 

 Georgia. 



38. Crabro pallidum n. sp. 



9 . — Head finely and closely punctured, in front more strongly and in addition 

 indistinctly striated ; space between hind ocelli about equal to or slightly less than 

 that between them and nearest eye-margin ; space between eyes at base of clypeus 

 greater than the width of the clypeus in the middle, the anterior margin of the 

 latter subtruncate, slightly produced medially, the lateral angles sharp but scarcely 

 dentate; pronotum not ridged anteriorly, obtusely dentate at the sides; dorsulum 

 with strong, scattered punctures, those on mesopleurse finer and spar-ser, episterual 

 suture with the foveas not strongly marked, though present; middle segment 

 above with a somewhat triangular depression, less marked in some specimens 

 than in others, covered with strong strise curving toward the sides, posterior face 



TRANS. AM. ENT. SOC. XXII. JUNE, 1895. 



