CRABRO CAPITOSUS. 137 



15. Crabro capitosus. 

 C. niger ; capite quadrato ; abdomine clavato ; metathorace 

 laevi ; tibiis posticis valde incrassatis. 



Crahro capitosus, Shuck. Foss. Hym. 159. 20. 



Dahlb. Hym. Enrop. i. 317. 198. 



Wesm. Hym. Foss. Fe'g. 129. 3. 

 Crabro lEevipes, Herr. Schdff. Faun. Germ. 181. 63. 



Female. Length 3% lines. — Black ; head subqnadrate, wider 

 than the thorax, smooth and shining ; a slightly impressed line 

 between the antennae passing a little beyond them, a deeper 

 line in front extending to the face, which is canaliculated ; the 

 base and apex of the scape, and the apical joints of the flagellum, 

 rufo-piceous beneath ; the inner orbit of the eyes and the cly- 

 peus covered with silvery pubescence, the latter produced in 

 the centre in front into a tooth ; the mandibles rufo-piceous at 

 their apex. Thorax shining ; the mesothorax and scutellum with 

 a few delicate scattered punctures, the former with two central 

 parallel impressed lines at the base, extending to the disk ; the 

 metathorax smooth and shining, consute at the base, with a faint 

 longitudinal line which deepens beyond the middle, the anterior 

 portion not distinctly enclosed; the tegulae rufo-piceous, the 

 wings hyaline and iridescent, the nervures piceous ; the anterior 

 tibiae yellow in front, the intermediate pair fuscous at their base 

 and apex ; the posterior coxa; pale testaceous at their apex, 

 their tibiae subclavate and with a pale yellow ring at the base ; 

 the anterior and intermediate tarsi pale yellow at the base and 

 rufo-piceous at their apex, the posterior pair entirely rufo- 

 piceous ; the legs simple, covered with fine hoary pile. Abdo- 

 men clavate, smooth and shining, the first segment much nar- 

 rowed at the base ; the apical segment concave above, its apex 

 rufescent. 



This species has been taken in the London district, and also 

 in Yorkshire ; but it is apparently rare. 



16. Crabro bimaculatus. 

 C. niger ; clypeo flavo-maculato ; metathorace laevi. 



Crossocerus bimaculatus, St. Farg. Ann. Soc. Ent. Fr. iii. 788. 25 ; 



Hym. iii. 191. 25 ^ . 

 Crabro geniculatus, Shuck. Foss. Hym. 169. 28 $ . 

 Crabro bimaculatus, Dahlb. Hym. Europ. i. 310. 190^ ? . 



Female. Length 3| lines. — Black ; the head punctured and 



