152 



CRABRO PALMIPES. 



above, the apical joint proceed within into a compressed plate, 

 the apex below obsoletely bidentate, within emarginate, and 

 above having a long curved spine ; the trochanters and femora 

 yellow, the latter black in front ; the tibia& yellow in front, with 

 a black stripe behind ; their plate slate-coloured behind, where 

 it has some abbreviated transverse pale striae and maculae, in 

 front piceous ; their tarsi testaceous ; the intermediate coxae 

 and trochanters yellow ; the femora yellow before and behind ; 

 the posterior legs as in the other sex. 



This species is equally abundant with the foregoing, and is 

 found in most sandy situations; it provisions its nest with 

 Diptera, and, like the preceding species, burrows in the ground. 



** Antennce of the males simple. Anterior tibice simple, their 

 tarsi dilated. 



29. Crabro palmipes. 



C. niger ; tarsis anticis palmatis ; metathoracis basi oblique 

 striato. Mas. 



Sphex palmipes, Linn. Syst. Nat. i. 944. 20 $ . 



Gmelin, ed. Syst. Nat. i. 



nil. Ent. iii. 231. 31. 

 Crabro palnripes, Van d. Lind. Obs. ii. 47. 8. 



St. Farg. Ann. Soc. Ent. Fr. iii. 765. 2 ; Hym. iii. 169. 2. 



Dahlb. Hym. Europ. i. 332. 217. 



Wesm. Hym. Foss. Belg. 135. 14. 

 Crabro tarsatus, Shuck. Foss. Hym. 133. 6< . 

 Crabro pusillus, Herr. Schdff. Faun. Germ. 181. 55. t. 23 & 24. 



Male. Length 2J lines. Black ; head smooth and shining, 

 with a few minute scattered punctures, a deep longitudinal 

 impression extending from the base of the antennae to the ante- 

 rior stemma, behind which it passes a little beyond the posterior 

 ones; the scape yellow outside, the flagellum fimbriated beneath; 

 the inner orbit of the eyes, the cheeks, and the clypeus covered 

 with silvery silky pubescence, the latter carinated in the middle. 

 Thorax shining and punctured; the mesothorax with three 

 abbreviated, slightly elevated, longitudinal lines at its base; 

 the metathorax with a cruciform consute impression, dilating 

 at the base of the metathorax into an impressed triangle, which 

 is longitudinally striate, the enclosed subcordiform space convex 

 on each side and obliquely striated; the truncated portion 

 with the lateral margins raised and transversely striated ; the 

 wings hyaline, their extreme base yellowish, their apical margins 



