FORMICID^ FROM LOWER CALIFORNIA. 29 



tennee and those on the mandibles, short and stift. Pu- 

 bescence of the legs still shorter and more or less ap- 

 pressed, excepting a few longer and erect hairs at the 

 knees ; a few longer hairs may also be observed on the 

 scape of the antenna?. 



Head of S major about one-half broader than the 

 thorax, thoughbutslightlybroader in the ^ minor; slightly 

 longer than wide, somewhat broadest behind; its sides 

 above insertion of the antennge almost parallel, gently 

 curving towards the mandibles, distinctly emarginate 

 behind in the § major, but almost straight in the ^ 

 minor. Clypeus straight or but faintly emarginate in 

 front: its median carina rather indistinct. Frontal area 

 minute, triangular. Eyes ovoid and considerably above 

 the middle of the face, their upper edge almost in a line 

 with the upper angles of the frontal carina? ; those of the 

 § minor almost lateral. Antenna? of the ^ major rather 

 stout, the scape scarcely reaching beyond posterior angles 

 of the head, more slender and longer in the ^ minor. 

 Mandibles with five or six teeth, their basal half or more 

 finely striated, the rest smooth and with scattered pihfer- 

 ous punctures. Head and thorax finely and densely 

 granulated, with coarse punctures between the frontal 

 carina? and short, radiating, linear depressions on the 

 vertex of the g major. Prothorax somewhat flattened 

 above. 



Scale stout, broadest and truncate at apex, with the 

 hind angles rounded ; of equal thickness from base to 

 about two-thirds its length; apical third inclining back- 

 ward; the posterior face perpendicular. Abdomen with 

 dense and fine transverse strije and scattered piliferous 

 punctures. 



This species appears to be related to Camp, novo^-raii- 

 adciisis Mayr, from which it differs, however, in its 



