154 



HYMENOPTERA. 



pubescence. Front not much depressed beyond the central furrow, which becomes wider 

 and deeper beyond the middle. Ocelli in shallow pits, separated from each other by 

 about the length of the third, and from the eyes by the length of the second and 

 third antennal joints united, and forming a triangle. The fovea at the eyes opposite 

 the ocelli straight, narrow. Clypeus projecting in the middle, not sharply carinate ; the 

 apex of the projecting part protruding beyond the rest, and ending in a rounded point. 

 Antennae covered with a pale pubescence; the third joint a little longer than the 

 fourth. Pronotum roundly convex, the sides rounded. Mesothorax shining, obscurely 

 shagreened, covered with a short pale fulvous pubescence, which is longest on the 

 sternum. A shallow central furrow on the mesonotum. Median segment with a 

 gradually rounded slope, obscurely aciculate, the centre furrowed, the sides keeled, 

 the apex with some stout transverse striae. Metapleurse covered with a fulvous 

 pubescence, finely rugulose. Petiole narrow, the apex nodose, longer than the second 

 and third segments united. The second segment a little longer than the third. The 

 petiole and the apex of the second segment piceous-red ; the sides of the segments 

 covered with a fulvous pubescence. Pygidial area wide, a little, longer than broad, 

 bearing large punctures ; the apex depressed, im punctate, reddish. Legs covered 

 with a pale pubescence, brownish-testaceous; the coxae, the trochanters above, the 

 anterior femora above and beneath, the middle femora almost entirely, and the hinder 

 tibiae behind, blackish ; the long spur of the hind tibiae three-fourths the length of the 

 metatarsus, stout; the metatarsus slightly longer than the following two joints united. 

 Transverse cubital nervure received distinctly before the middle of the radial cellule. 



18. Crabro maculitarsis. (Tab. IX. fig. 18, $ .) d^^^^^^v^^^^vvr^^*^^) 



Niger, apice petioli brunneo, tibiis subtus basique tibiarum flavis. $ . JjUv£bt ^»^_,<,V>-v-*6 (ji£^^J(^^^-x^^^^u^ 

 Long. 8-9 millim. J^SK$ AJ^ H,V.1^^*P,W 



Hob. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



Head aciculate, covered closely with a blackish pubescence ; the cheeks and clypeus 

 with silvery pubescence ; the frontal depression glabrous, shining, impunctate ; ocelli 

 in a triangle, situated in pits ; a narrow furrow in their centre ; the frontal furrow 

 narrow and shallow; there is a shallow semicrescentic fovea opposite them almost 

 touching the eyes; hinder ocelli placed slightly behind the eyes, separated from 

 each other by a less distance than they are from the eyes, the latter being fully 

 the length of the third antennal joint; clypeus moderately projecting, carinate down 

 the middle ; cheeks normal. Antennae covered with a pale microscopic pile ; the 

 second and third joints as long as the fourth and fifth united. Prothorax transverse, 

 the sides rounded ; the angles with an oblique wide furrow on the lower side. Meso- 

 notum coarsely aciculate, opaque, indistinctly and shallowly furrowed down the centre • 

 the mesopleurae more shining, less strongly longitudinally aciculate ; the furrow below 

 the tegulae is wide and deep, and bears short stout keels. Triangular area of the 



