COMMUNICATIONS 



OF THE 



o in. 



I. Description of Mexican Ants noticed in the American 

 Naturalist, April, 1868. 



BY EDWARD NORTON. 



[Communicated April 6, 1868.] 



Camponotus (Formica) esuriens Smith. 



SMITH, British Museum Catalogue. Hymenoptera. VI, p. 54, No. 

 196, 1858. Major and minor workers. Mexico. 



Mr. Smith describes the two workers. I find among 

 my specimens the worker major, the male, and female. ., 



The worker major agrees with Mr. Smith's description ; 

 the ocelli are wanting. 



Female. Length, 0.50 in. Face below ocelli black ; 

 the radicle of antennae, lower margin of face, and greater 

 part of mandibles ferruginous ; mesothorax and scutel 

 with variable piceous, or pitch-colored spots. Declivity 

 of metathorax abrupt ; node depressed, almost truncate 

 above ; abdomen black ; wings hyaline ; veins ferruginous. 



Male. Length, 0.28-32 in. The head, mesothorax, 

 and abdomen piceous black. Nasus, remainder of thorax, 

 node, and legs piceous ; trochanters yellowish. Node 

 truncate, slightly emarginate ; ocelli prominent and sep- 

 arated. 



COMMUNICATIONS ESSEX INSTITUTE, VOL. VI. 1 JULY, 1868. 



