328 



SPHEGJD-i;. 



abdomen bright chrome-yellow ; tlie intermediate femora at base 

 and the apical joints of the tarsi reddish bro\\n ; wings hyaline, 

 with a brownish tint along the costal margins, nervures and teguiae 

 testaceous. 



Hah. Kumaun, and probably throughout North-west India. 

 $ . Length 12 ; eocp. 20 mm. 



588. Crahro argentatus. 



Lindenius argentatus, Lepel. Ann. Soc. Ent. Ft: iii (1834), p. 792 ; 



id. Hi/m. iii, p. 194; Bahlb. Hym. Eur. i, p. 300. 

 Crabro argentatus, Smith, Cat. iv, p. 423 ; Cam. Mem,. Manch. L. 



Ph. Soc. (4) iii, 1890, p. 270. 

 Oxvbehis argenteolineatus, Cam. Mein. Manch. L. Ph. Soc. (4) iii, 



1890, pp. 275 & 282. 



2 . Head, thorax, and abdomen rather coarsely and closely 

 punctured ; clypeus narrow, transverse anteriorly, with a triple 

 incision ; a very short obscure furrow behind the anterior ocellus, 

 and a shining fovea on each side of the posterior ocelli ; the enclosed 

 space at base of median segment coarsely longitudinally striate ; 

 apical margins of segments 1-5 of the abdomen narrowly smooth 

 and shining, the bases of the 2nd to the 5th segment constricted 

 and pubescent, the apical segment densely pubescent. Black ; a 

 line on the pronotum, the tubercles, the postscutellum, the coxae 

 beneath, the apex of the anterior femora, the tibiae and tarei, and 

 the intermediate and posterior tibiae and tarsi pale yellow, all the 

 tibiae with a black elongate spot beneath ; the clypeus, sides of the 

 face, cheeks, sides of th^ median segment, and base of abdominal 

 segments 2-5 with dense short silvery pile ; the apical mai^ins of 

 segments 1-5 narrowly obscure reddish ; pygidium M'ith dense 

 reddish-brown pubescence ; wings hyaline, tJae apex obscurely 

 fuscesceut. 



Bab. India {Lepeleiier) ; Barrackpore, Bengal. $. Length 6; 

 ewj^. 12 mm. 



This and two other species, C. nitidus and O. hellus, described 

 by Mr, Camerou under the genus Oxyhelm are undoubted Crabro, 

 having no lateral squamse or mucro, and a complete cubital and 

 2nd discoidal cells, separated by a well-marked nervure. 



589. Crabro bellus. 



Oxvbehis bellus. Cam. Mem. Manch. L. Ph. Soc. (4) iii, 1890, 



pp. 276 & 280. 



6 . Head, mesonotum, scutellum, median segn)ent, and abdomen 

 coarsely punctured and rugose, the pronotum, tubercles, and post- 

 scutellum smooth, impunctate ; clypeus slightly convex, transverse, 

 arched anteriorly ; frontal hollow deep, densely pubescent ; 

 mesonotum with a short central longitudinal carina anteriorly ; 

 median segment widely reticulate, the enclosed triangular space 

 at base with a few coarse longitudinal striae. Black : the clypeus, 

 front to above the base of the autennie, and cheeks with dense 

 silvery pile ; the posterior margin of the pronotum, the tubercles, a 



