COMMUNICATIONS 



ESSEX INSTITUTE 



a;^ o Xj. "\^ z 



I. Description of Mexican Ants noticed in the American 

 Naturalist, April, 1868. 



By Edward Norton. 



[Commimicated 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 antennte, lower margin of face, and greater 

 part of mandibles ferruginous ; mesothorax and scutel 

 with variable piceous, or pitch-colored spots. Declivity 

 of metalhorax aljrupt ; 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. 



