164 HYMENOPTEEA. 



segment opaque, alutaceous, obscurely transversely striated; a broad shallow furrow 

 down the middle ; it has a gradually rounded slope to the apex. Legs of moderate 

 length ; the fore coxse black ; the long spur of the hind tibiae reaching a little beyond 

 the middle of the metatarsus; the tarsi slightly spined, the apical joint blackish. 



P. incognita may be known from P. mexicana by the trochanters not being black, 

 by the wings not being hyaline, and by the body being deep black, without any purple 

 reflections. 



9. Pseudagenia calcarata. 



Pompilus (Agenia) calcaratus, Cresson, Trans. Am. Ent. Soc. i. p. 128 \ 



Pompilus calcaratus, var. accolens, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 374 2 . 



Hab. United States, Connecticut to Illinois 1 . — Mexico, Orizaba (Sumichrast 2 ). 



J 10. Pseudagenia montivaga. (Tab. X. fig. 9, wing.) 



■Caerulea, geniculis late, tibiis tarsisque flavis ; alis fere hyalinis. 

 Long. 12 millim. 



Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 7000 feet (H. H. Smith). 



Eyes with a distinct curve, converging a little at the bottom. The hinder ocelli 

 separated from the eyes by a distinctly greater distance than they are from each other. 

 Clypeus broadly convex, the apex rounded. Occiput transverse. The eyes reaching 

 to the extreme back of the head. The head opaque, very closely and finely rugose, the 

 cheeks and clypeus densely covered with silvery pubescence ; the vertex and outer 

 orbits more sparsely pubescent, and with long pale fuscous hairs. Pronotum very 

 short, broadly arcuate in front, concave behind, the middle with a rather sharp angle. 

 Median segment at the base closely punctured, the rest irregularly transversely striolate. 

 Pro- and mesothorax finely and closely punctured, and covered with a whitish pubes- 

 cence ; the median segment also with a whitish pile, and with rather long pale fuscous 

 hairs. Abdomen shining, almost impunctate, irregularly pruinose ; the apical segment 

 shining, impunctate, and with long fuscous hairs ; petiole at the base narrowed into a 

 neck, from which it becomes gradually dilated to the apex. Antennae rather long, 

 moderately stout, not tapering much to the apex, pruinose. Wings : second and third 

 cubital cellules subequal at the top, the third at the bottom a little longer than the 

 second ; the first transverse cubital nervure obliquely curved, the second also curved, 

 but not so obliquely, the third roundly elbowed near the bottom ; the first recurrent 

 nervure received in the middle, the second in the basal third of the cellule. The coxee 

 and trochanters bluish ; the femora, except at the apex, and the apical joint of the 

 tarsi, black; the spurs blackish, yellowish at the base, not reaching the middle of 

 the metatarsus. 



