150 HYMENOPTERA. 
150. PompriLus CYANEUS. 
Calicurgus cyaneus, St. Farg. Hym. iu. 405. 10. 
Hab. Brazil. 
151. PoMpiILUS DUMOSUS. 
Pompilus dumosus, Spin. Gay’s Chili, vi. 376. 1. 
Hab. Chili; Brazil. 
152. PomMpiILUS ERRATICUS. 
Pompilus erraticus, Dahlb. Hym. Europ. 1. 60. 
Hab. Brazil. 
153. PoMPILUS FAMILIARIS. B.M. 
Female. Length 6 lmes.—Head black : the hinder margin of 
the vertex has a narrow yellow line, slightly interrupted m 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 antennz running up half-way towards the anterior 
ocellus ; the antennz black above and fulvous beneath, the scape 
yellow in front; the thorax varied with yellow markings as in 
P. Pelistoides ; the legs red, the femora having a dark stripe 
above, and the intermediate tibiz a dark stripe behind, the 
posterior pair are fuscous above ; wings as in the preceding 
species. Abdomen dark fuscius, 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 coxe, trochanters and femora red, the 
tibie and tarsi black, the anterior tibize im front and the tarsi 
pale rufo testaceous, a white spot at the base of the inter- 
mediate and posterior tibie, 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 
