Sg2 CALIFORNIA ACADEMY OF SCIENCES. 



mesonotum oval, convex and somewhat elevated above 

 the pronotum, its posterior half almost in a plane with the 

 metanotum ; constriction between the meso- metanotum 

 quite deep and narrow; basal section of the metanotum 

 rather more than twice the length of the declivity, its an- 

 terior half rounded above, the posterior half with a de- 

 pressed, elongated triangular area which merges poste- 

 riorly with the declivity. Spines wanting, their position 

 indicated by an angle at the upper edge of the declivity. 

 First node stout, erect, convex in front, above and be- 

 hind; second node pyriform if viewed from above, ele- 

 vated and broadest behind, convex above and rounded 

 behind. 



Head, densely and finely granulated and finely reticu- 

 late-striate ; stride between the frontal carinae diverging 

 posteriorly; clypeus with a median carina and irregularly 

 striated; mandibles densely and quite coarsely striated 

 and sparsely punctured, the punctures becoming coarser 

 towards the cutting edge. Pro thorax highly polished and 

 faintly shagreened; elevated section of the mesonotum 

 highly polished and without sculpturing; the posterior 

 section finely and irregularly striated and granulated, the 

 lateral pieces densely granulated and with faint oblique 

 stride; metathorax delicately shagreened, with faint and 

 sparse transverse strias at base above and a few coarse, 

 longitudinal strias at sides above the cox£e. Nodes pol- 

 ished and but faintl}^ shagreened. Abdomen polished, 

 the basal half or more of the first segment finely sha- 

 greened. 



Erect hairs yellowish, sparse, more dense and coarsest 

 on the abdomen; pubescence of antenn£e and legs short 

 and suberect, with a few longer hairs along inner edge of 

 femora. 



Color of the head, antennae, thorax and nodes reddish, 

 the clypeus, mandibles and legs more yellowish; anterior 



