CEABEO. 151 



pile ; the third and fourth joints subequal and a little longer than the second, which is 

 globular. Mandibles yellowish, black at the base and apex. Pronotum above trans- 

 verse, tbe lateral angles bluntly acute ; the slope almost perpendicular ; the prosternum 

 separated distinctly from it. Mesonotum aciculate or finely punctured in front, a broad 

 depression at the base ; the mesopleurae without punctures, shining ; the furrow below 

 the tegulee wide, crenulated ; in the centre is, below the point of insertion of the wings, 

 a large, oblique, somewhat pear-shaped depression or large fovea. Scutellum finely 

 punctured, shining. Metanotum finely rugose. Median segment finely rugose; the 

 base rounded, the apex oblique, with a large oblong fovea in the middle. Metapleurae 

 excavated, shining, almost impunctate. The pronotum (except in the centre), the 

 tubercles, a spot on either side of the scutellum at the base, and a narrow lateral line 

 beyond them, clear yellow. Abdomen shining, impunctate ; the apical segments sparsely 

 covered with whitish hair. The hypopygium almost twice longer than broad ; densely 

 covered with stiff depressed bristle-like silvery-white hair ; the apex rounded, not half 

 the width of the base. Legs covered with a silvery pubescence ; the knees, spurs, tarsi, 

 and anterior tibiae yellow ; the middle tibiae at the apex, the hinder tibiae for the greater 

 part, brownish ; the long spur of the hind tibiae reaches nearly to the apex of the 

 metatarsus. The transverse cubital nervure is received almost twice the length of 

 the curved-up part of the radial nervure from the stigma, i. e. considerably before 

 the middle of the cellule. The wings have a fuscous or smoky tinge; the stigma 

 is fuscous. 



^ 13. CrabrO montezuma. (Tab. IX. figg. 13, $ ; 13 a, <$ antenna.) ^^^^^^^^^gf^^^ 



Niger, nitidus, tarsis, tibiis anterioribus basique tibiarum posticarum flavis ; alis hyalinis. <j> et S . ^-|vM s ,r * v y 



Long, fere 5 millim. ^S-xTK^)-"^l, (t^Ol* , <?-£. "^ £ y 



Rob. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). |>» <~f ; H 90 ^ 



Antennae stout, thickened gradually towards the apex, beneath brownish ; joints 2-4 

 subequal. Head large, cubital. The ocelli in a curve; the posterior ocelli in pits, 

 separated from each other by nearly double the distance they are from the eyes, which 

 do not reach to them. Clypeus and cheeks covered closely with a silvery pubescence. 

 Thorax shining, impunctate ; the pronotum at the edges slightly curving towards the 

 head, this part being yellow and separated from the posterior and larger portion, 

 which is rounded laterally. Basal area of the median segment defined, longitudinally 

 striolated; the apical region deeply excavated, finely transversely striated. Pleurae 

 shining, impunctate, the divisions crenulate ; a large fovea in the centre of the meso- 

 pleurae. Abdomen shining, as long as the thorax; the apical segment rufous. Wings 

 hyaline, the nervures black ; the transverse cubital nervure received considerably before 

 the middle of the cellule. 



The male has the antennae thicker; the second joint projects obliquely, and becomes 

 larger towards the apex ; the third joint is shorter, and with the fourth forms an incision. 



