150 HYMENOPTERA. 



150. POMPILUS CYANEUS. 



Calicurgus cyaneus, St. Farg. Hym. iii. 405. 10. 

 Hab. Brazil. 



151. POMPILUS DUMOSUS. 



Pompilus dumosus, Spiii. Gay's Chili, vi. 376. 1. 

 Hab. Chili ; Brazil, 



152. Pompilus erraticus. 



Pompilus erraticus, Dahlb. Hym. Europ. i. 60. 

 Hab. Brazil. 



153. Pompilus familiaris. B.M. 



Female. Length 6 lines. — Head black : the hinder margin of 

 the vertex has a narrow yellow line, slightly interrupted in the 

 middle, the line continued along the outer orbits of the eyes ; 

 the clypeus yellow, with a triangular black spot in the middle of 

 its base, a yellow stripe on each side of the face, and a third be- 

 tween the antennae running up half-way towards the anterior 

 ocellus ; the antennae black above and fulvous beneath, the scape 

 yellow in front ; the thorax varied with yellow markings as in 

 P. Polistoides ; the legs red, the femora having a dark stripe 

 above, and the intermediate tibise a dark stripe behind, the 

 posterior pair are fuscous above ; wings as in the preceding 

 species. Abdomen dark fuscous, with two yellow spots at the 

 base above ; the base beneath yellow, the apical margins of the 

 segments obscurely so. 



Hab. Brazil. (Coll. W. W. Saunders, Esq.) 



The form and general aspect of this insect induce me to think 

 it possible that it may be only a differently-coloured form of the 

 preceding species. 



154. Pompilus gracillimus. B.M. 



Male. Length 4 lines. — Black : head wider than the thorax ; 

 the clypeus, mandibles and palpi white, the face covered with 

 short silvery pile ; the coxae, trochanters and femora red, the 

 tibiae and tarsi black, the anterior tibiae in front and the tarsi 

 pale rufo testaceous, a white spot at the base of the inter- 

 mediate and posterior tibiae, the calcaria white, the legs much 

 elongated; wings hyaline, the nervures black, a fuscous cloud 

 occupies the marginal, a portion of the second and the whole of 



