MEXICAN FORMICID^E. _ 05 1' 



transversely and finely striated above, sides of prothorax, 

 anteriorly, rugoso - striate ; metanotum and sides of the 

 thorax densely granulated, the declivity polished and with 

 fine, transverse reticulations. First node, smooth above, 

 its sides finely granulated ; second node finely and dense- 

 ly granulated and with a few longitudinal, impressed lines. 

 Abdomen polished and sparsely punctured. Erect hairs 

 whitish, rather dense, short and fine, though somewhat 

 stouter on the abdomen. 



Head red, with the posterior angles and median furrow 

 sometimes brown or black, or with a blackish stripe each 

 side of the occiput. Scape black or dark brown, the fla- 

 gellum yellowish-brown, darker towards the end. Tho- 

 rax and nodes black or brownish; the abdomen black. 

 Femora dusky, or with a brownish tinge, the tibicE gen- 

 erally paler and the tarsi more or less distinctly yellowish. 



It resembles very much the soldier of Ph. tepicana, but 

 differs from it in the larger size, the rougher head, deeper 

 emargination of the clypeus and more transverse second 

 node. 



Seven specimens. Tepic. 



33. Pheidole carbonaria n. sp. 



Soldier: Length, 2.2 mm. Head longer than broad, 

 slightly broadest anteriorly, the sides nearly straight, the 

 posterior angles rounded, the occiput deeply emarginate; 

 a deep median furrow which reaches nearly to the frontal 

 area. Frontal area elongate triangular and deeply im- 

 pressed. Clypeus sinuate in front and behind and deeply 

 emarginate at the middle. Antennse short, the scape 

 reaching slightly beyond the middle. Prothorax about 

 one-half the width of the head and shaped like that of the 

 worker, the sutures between it and the mesonotum but 

 faintly indicated, the transverse depression of the meso- 

 notum very slight, meso-metanotal constriction deep, the 



2d Sek., Vol. V. ( 57 ) December 30, 1895. 



