176 HYMENOPTEKA. 



It is doubtful if the specimens described are really referable to S. velox (Smith), which 

 has only "a fuscous fascia and the tips fuscous;" but in other respects they agree 

 closely with it. The species is probably a variable one, as the specimen from Omilteme 

 wants the black on the pleurae, apex of median segment, and legs, and only the five 

 apical joints of the antennae are black. 



^ 6. Salius omiltemius. (Tab. X. fig. 22, wing.) 



Niger, basi antennarum, tibiis tarsisque rufo-testaceis, capite aureo-piloso ; alis flavis, fusco-fcrifasciatis. J . 

 Long, fere 12 millim. l 



Sab. Mexico, Omilteme in Guerrero 8000 feet (S. S. Smith). 



Head, except on the clypeus, densely covered with a golden pubescence; eyes 

 almost parallel ; the ocelli in a triangle, the hinder ones separated from the eyes by 

 nearly twice the distance they are from each other; clypeus punctured, the apex 

 broadly rounded ; the mandibles broadly red in the middle, the extreme apex black ; 

 the occiput transverse. Antennae stout ; the basal two joints reddish, the third joint 

 distinctly longer than the fourth. Pronotum shorter than the head, the sides rounded, 

 narrowing towards the base ; the apex arcuated ; the apex and base, and the pleurae, 

 with golden pubescence, that on the pleurae long. Mesonotum aciculate ; the scutel- 

 lum broad, finely punctured, flattish, hardly narrowed towards the apex ; the basal 

 half of the median segment with an oblique rounded slope, the apical half straight, 

 oblique ; the surface transversely aciculate, covered with a short fulvous pile. The 

 mesopleurae impunctate, shining, the oblique furrow complete; the metapleurae 

 strongly aciculate. Abdomen longer than the head and thorax united; a broad 

 brownish-red transverse mark on the second segment ; the pygidium apparently 

 coarsely rugose, thickly covered with long dull rufous hairs; the apical ventral 

 segments brownish-rufous at the apex and covered with long fuscous hairs. Tibiae 

 thickly and stoutly serrate, the long spur of the hind pair reaching a little beyond 

 the middle of the metatarsus ; the apices of the tarsal joints black ; the claws with 

 one straight spine before the curved apex. Wings : the first cloud is along the basal 

 nervure ; the second (and broader) cloud is along the second cubital cellule, and extends 

 the entire breadth of the wing ; the apical (and narrowest) cloud commences at the end 

 of the stigma ; the second cubital cellule at the top is longer, at the bottom shorter, 

 than the third; at the bottom the second cellule is shorter than at the top, owing to 

 the second transverse cubital nervure being elbowed obliquely at the bottom, and it is 

 angled before the middle, where the recurrent nervure is received ; the first transverse 

 cubital nervure is obliquely curved, the third straight at the bottom, obliquely rounded 

 at the top ; the second recurrent nervure is roundly elbowed above the middle. 



