392 HYMENOPTERA. 



covered with silvery pubescence ; the mandibles and scape yel- 

 low, the tips of the former ferruginous ; the vertex with an im- 

 jn-essed oblique channel running from each of the posterior ocelli ; 

 the cheeks covered with silvery down. Thorax delicately ])unc- 

 tured on the disk ; the collar, tubercles, two minute spots on 

 the scutellum and the post-scutellum, yellow ; au enclosed shining 

 subcordate space at the base of the metathorax, which has a 

 longitudinal impressed line from the base to the apex ; wings 

 hyaline, faintly coloured towards their apical margins, the ner- 

 vures black ; the legs have the tips of the coxa;, trochanters and 

 femora, the anterior and intermediate tibiae and the base and 

 apex of the posterior ])air, yellow ; the anterior and intermediate 

 tibijE have a dark stain behind; the tai'si of a reddish-yellow, 

 with the apical joint rufo-fuscous. Abdomen : the basal petio- 

 lated segment yellow, with a longitudinal dark stripe ; the second 

 and two following segments have on each side an irregular sub- 

 ovate macula, the apical margin of the fifth yellow, the sixth of 

 a reddish-yellow ; beneath, the second and three following seg- 

 ments have an obscure testaceous-yellow waved line at their 

 apical margins. 



Hab. Northern India. 



5. Crabro bipunctatus. B.M. 



Dasyproctus bipunctatus, St. Farg. Ann. Soc. Ent. Fr. iii. 802. 1 

 (1834); Hym. iii. 203. 1. 

 Dahlb. Hym. Europ. i. 294. Gl. 

 Megapodium Westermanni, DaJilh. Hym. Europ. i. 295. 1 (var.?). 



Hab. Cape of Good Hope. 



Having several specimeiis of this insect for examination, it is 

 found to vary in colouring as follows ; — 



Var. /3. The scape, collar, tubercles, a spot on the scutellum, 

 two on the second segment of the abdomen, and a transverse 

 line on the fifth segment, pale yellow ; the posterior tibia; black. 

 This is C. bipunctatus. 



Var. y. The scajje, collar, tubercles, two spots on the second 

 segment of the abdomen, and a transverse line on the fifth, pale 

 yellow ; the posterior tibiae ferruginous ; the scutellum immacu- 

 late. This appears to be the Megapodium Westermanni f 

 Dahlbom. 



6. Crabro Westermanni. 



Crabro Westermanni, Dahlb. Hym. Europ. i. 296. 



Hab. Cape of Good Hope. 



