174 WILLIAM J. FOX. 



'J, . — Sculptured like the 9 • '^"t the middle segment on sides striated, and the 

 episternal suture of mesopleuTW less strongly foveolate ; space between hind ocelli 

 slightly less than that between them and the nearest eye-margin ; the markings 

 are substantially the same as in the 9 those -on the abdomen, however, touching 

 within, there are small lateral spots on the second and third ventral segments and 

 the clypeus has two white spots; fore femora black, except tips and a short line 

 on outer side at apex ; fore trochanters triangular, in length not more than lialf 

 that of their femora ; tibial shield a little longer than broad, its outer and poste- 

 rior margins strongly rounded, the anterior margin scarcely rounded, in color 

 greenish white, streaked with paler throaghout ; first joint of medial tarsi about 

 as long as the remaining joints united. Length 7 mm. 



Illinoi.-J ; Colorado. Distinguished by the color of its markings, 

 sculpture, long pubescence of head and thorax, etc. There is no 

 suture between the epirtierum mesopleuralis and the raesosternum in 

 this species. 



52. Crabro virgatus n. sp. 



•J, . — Front and vertex coarsely striated, cheeks and occiput coarsely and closely 

 punctured ; antennte long, slender, the flagellum decidedly longer than twice the 

 length of the scape ; space between hind ocelli distinctly less than that between 

 them and the nearest eye-margin ; pronotum at each side behind the strong lat- 

 eral tooth with a strong pit or fovea ; dorsulum coarsely and closely punctured ; 

 scutellum and mesopleurse coarsely striated, with punctures between the stripe ; 

 middle segment above and on posterior face rugose, at the base with a transverse 

 row of large fovese, the channel which divides the upper surface broad, deep and 

 transversely ridged so as to appear foveolated, sides of middle segment striated, 

 less strongly so in the middle : tibial shield broader than long, in shape somewhat 

 triangular, broadly margined anteriorly with black, otherwise, except a black 

 spot near apex of tibiae grayish, dotted with yellow marks. Black, including the 

 mandibles, clypeus and thorax entirely; scape with a narrow yellow stripe: fore 

 femora beneath, tibiae more or less, the fore tarsi and the first joint of the other 

 pairs, spot on each side of first abdominal segment emarginate posteriorly near 

 inner end, a wedge-shaped spot on each side of segment 2, linear markings on 

 segments 3-5, spots or lines on segment 6 and a small spot at each side of ventral 

 segment 2, yellow; silvery pubescence scarcely evident on the cheeks, though 

 present in the other usual situations ; wings except base subfuscons, nervures and 

 stigma black. Length 8 mm. 



Nevada. Easily distinguished l)y the sculpture. In the single 

 specimen before me dorsal abdominal segments 3-5 have bas^dly a 

 chitinous covering, the apical margin of which is deeply bowed. 

 Whether this is an anomalistic or an ordinary character of the spe- 

 cies is difficult to decide without other specimens. I am inclined to 

 regard it as an anomaly. 



53. Crabpo incertns n. sp. 



9 . — Head closely punctured ; lateral impressions of vertex broad and not deep ; 

 space between eyes beneath at base of clypeus less than in tenuiglosstis, but greater 

 than in ti(midm, somewhat less than the length of the pedicellum and basal joint 



