No. 7. — Two New Genera of Myrmicine Ants from Brazil. 



contributions from the entomological laboratory of 

 the bussey institution, harvard university. no. 103. 



By William Morton Wheeler. 



Mx. C. William Beebe, of the New York Zoological Park, recently 

 sent me for identification nineteen vials of ants which he collected 

 May 15, 1915, in a suburb of Para, at the mouth of the Amazon. 

 The specimens were all taken from four square feet of jungle mold 

 at the foot of a single tree, whose bird fauna (76 species!) Mr. Beebe 

 studied for a week. In addition to the ants he took from the same 

 little patch of mold a number of beetles, termites, springtails, bugs, 

 pseudoscorpions, ticks, mollusks, and worms. The collection of ants 

 comprises seventeen species, two of which are of singular structure 

 and evidently represent new genera. The fifteen other species are 

 recorded in the following hst: — 



Pachycondyla harpax Fabr. One worker. 



Euponera {Trachymesopus) stigma Fabr. Two workers. 



Ponera opaciceps Mayr. Six workers. 



Anochetus mayri Emery. One dealated female. 



Solenopsis suhtilis Emery. Fifteen workers, one male, and one 

 dealated female. 



Crematogaster vidima F. Smith, var. One dealated female. 



Pheidole fiaveris Roger subsp. exigua Emery. One soldier, three 

 workers, three males, and one dealated female. 



Pheidole suharmata Mayr. Two workers and one dealated female. 



Trachymyrmex sp. One dealated female, without head. 



Cyphomyrmex rimosus Spin. One dealated female. 



Rhopalothrix (Octostruma) halzani Emery. Twelve workers and 

 one dealated female. 



Strumigenys subedentata Mayr. One dealated female. 



Prenolepis steinheili Forel. Four workers and three males. 



Rhizomyrma goeldii Forel. Nine workers. 



Camponotus {Myrmotkrix) abdominalis Fabr. var. One dealated 

 female. 



The solitary dealated females of the species of Anochetus, Cremato- 

 gaster, Trachymyrmex, Cyphomyrmex, and Camponotus were evi- 



