CRABKO.— OXYBELUS. 155 



median segment shining, minutely aciculate; the central furrow wide, strongly 

 aciculate, deep, but not so wide as the furrow bordering the area ; the rest of the 

 segment opaque, transversely aciculated, densely covered with white pubescence. 

 Metapleurse aciculate, the furrow keeled like the mesopleurse. Petiole shining, about 

 one-fourth longer than the second segment, becoming gradually thicker towards the 

 apex, which is not nodose*; the rest of the abdomen aciculate, opaque, the segments 

 at the apex and laterally (the last entirely) densely covered with a short golden pile. 

 Pygidial area with a raised triangular space at the base, gradually narrowed to the 

 apex, shining, impunctate, except the basal space. Legs normal. 



^ 19. Crabro jason. (Tab. IX. fig. 19, hind leg, 6 .) — w^^-^^w-o dty*-~* JUJ^^ \ } 'Xs£* 



Niger, subopacus ; alia fere hyaHnis, nervis nigris. $ . 3C<^,. £ ;; „. ^^ (<&~J2f a U^& , cR**^ JUJL* °k*J® . 



Long, fere 7 nrfllim. ^^U ^ A-^«T, #>-\ t X1& ) . 



Hal. Mexico, Xucumanatlan in Guerrero 7000 feet (II. H. Smith). 



Antennae moderately stout; the third joint distinctly longer than the fourth. Head 

 cubital, longer than wide, concave posteriorly, narrowed behind the eyes ; the occiput 

 margined ; the clypeus convex, keeled in the centre, the apex broadly rounded. 

 Ocelli in a triangle, the hinder ones separated from each other by a slightly less 

 distance than they are from the eyes. Mandibles broadly yellow, the apex piceous. 

 Thorax alutaceous; the pronotum almost transverse, the apex oblique. Basal area of 

 the median segment longitudinally striolated ; a crenulated furrow leading from its 

 apex to the excavated apical portion, which is finely transversely striated. A curved 

 crenulated furrow leads down from the tubercles ; and there is a round small fovea at the 

 apex of the mesopleurae in the middle. Abdomen longer than the thorax, subpetiolate ; 

 the petiole becoming gradually thicker towards the apex, shining, impunctate ; the 

 apex with a short pile. Legs stout, the posterior tibiae dilated, especially towards the 

 apex ; the long spur of the hind tibiae reaching nearly to the apex of the metatarsus, 

 which is shorter than the other joints united; the hind tibiae shorter than the tarsi; 

 the anterior tarsi inclining to piceous in colour. 



The male has the antennal joints thicker and more dilated beneath ; and the hind 

 tibiae are more dilated and longer than the tarsi, their base being white. 



Subfam. OXYBELINJE. 



OXYBELUS. 



Oxybelus, Latreille, Hist. Nat. Crust, et Ins. xiii. p. 307 (180o). 



Nearly one hundred species are known of this well-marked genus. Two species only 

 have been recorded as yet from south of our region. 



* In the table on p. 142, line 10 from top, for " petiole nodate at the apex," read " petiole nodate or not at 

 the apex." 



xx 2 



