480 [Jink 



behind at base, pale yellow ; clypeus silvery. Thorax minutely punc- 

 tured, more distinct and sparse on the scutellum ; immaculate, except 

 occasionally a whitish spot on the tubercles and an obscure interrupted 

 whitish line on the collar; metathorax deeply and irregularly striated 

 at base above; tegulae black. Wings dusky-hyaline, fuliginous at tips; 

 nervures fuscous. Legs simple, black ; tibiae and base of tarsi yellow, 

 the former more or less black within, and the posterior pair with an 

 exterior black spot at tip. Abdomen subsessile or slightly subpetiolate. 

 shining ; first segment with a central, transverse, sublunate, yellow spot 

 on each side, nearly confluent on the disk ; on each side of the second 

 segment a transverse ovate yellow spot, pointed within and sometimes 

 nearly confluent in the middle; remaining segments each with a narrow 

 transverse yellow fascia, often interrupted on the third and fourth seg- 

 ments ; apical segment conical, entirely black, subrugose with the sides 

 raised; venter black, smooth, shining and immaculate. Length 3* — 5 

 lines ; expanse of wings 6 — 8 lines. 

 Three specimens. 



7. Crabro conspicuus, n. sp. 



Black : clypeus, spot on mandibles : scape of antennae, interrupted line on 

 collar, tubercles, scutellum, tibia? and tarsi, broad band on first segment of 

 abdomen, two large spots on second, and narrow subinterrupted bands on re- 

 maining segments, yellow ; wings smoky. 



Female. — Black, minutely punctured, slightly pubescent; clypeus. 

 a line on mandibles and scape of antennae, yellow; clypeus silvery, some- 

 times with a central black line. Thorax: a line on the collar, slightly 

 interrupted in the middle, tubercles, and scutellum, yellowish, some- 

 times whitish ; metathorax with strongly developed longitudinal ele- 

 vated lines; pleura shining; tegulae black. Wings smoky-hyaline, 

 darker at tips; nervures black. Legs simple, black ; extreme tips of 

 the femora, the tibiae, except a spot or line within, and the tarsi except 

 tips, yellow. Abdomen subsessile, narrow, elongate, convex, shining : 

 first segment with a broad, continuous, subapical yellow band ; second 

 segment with a large transversely subquadrate yellow spot on each side 

 a little behind the middle; the third and fourth segments each with a 

 narrow, yellow, apical fascia interrupted in the middle and emarginate 

 on each side anteriorly; the fifth segment with a continuous yellow fascia 

 on the apical margin ; apical segment conical, entirely black, rugulose. 

 with the sides raised ; beneath black, smooth and shining, immaculate. 

 Length 5 — h\ lines; expanse of wings ~l — 8 lines. 



Three specimens. Easily recognized by the broad band and spots 

 on the two basal segments of the abdomen. 



