MEXICAN FORMICID^. 877 



and coarsely sculptured. Basal section of the metano- 

 tum with a few, posteriorly diverging carina; the decliv- 

 ity small, triangular and smooth ; metanotal spines rather 

 long, slender, directed backward and upward. Sides of 

 thorax coarsely granulated. 



First node elongate -quadrate, flat above, rounded in 

 front, truncate behind and with the posterior angles quite 

 acute; surface smooth and polished. Second node small, 

 rounded and with two rather deep longitudinal lines above, 

 the space between them granulated. Abdomen highly 

 polished and rather long and pointed; faintly transversely 

 wrinkled. 



Erect hairs of the head, thorax and abdomen rather 

 sparse, whitish, long and slender; hairs of legs and an- 

 tennae shorter and sub-erect. Appressed pubescence ap- 

 parently none. 



Color black. Mandibles vellowish ; antennse and legs 

 dark brownish, the coxa? and tarsi somewhat paler. 



Four specimens. Tepic. 



This species resembles somewhat Crem. crinosa Mayr, 

 but differs from it in the sculpturing of the head, thorax 

 and nodes; it comes also near to Crem. carinata and 

 curvisfinosa Mayr, from which it, on account of the pe- 

 culiar formation of the clypeus and the differently sculp- 

 tured thorax, may be readily separated. 



29. Cremastogaster lineolata (Say) Mayr, race 

 CERASi Fitch, var. 



Myrmica cerasi Fitch, Traus. N. Y. State Agr. Soc, xiv, 1854, p. 



835. 

 Mtjrmica cerasi Fitch, First and Second Eep. Ins. N. Y., 1856, p. 130. 

 Cremastogaster lineolata Say, var. cerasi Emery, Zool. Jahrb., viii, 



1894, p. 282. 



Numerous specimens. Sierra San Lazaro and San 

 Jose del Cabo, Cape Region, Lower California. 



Differs from the typical form in the slightly rougher 



