NEW FORMICID.E FROM BARRO COLORADO ISLAND. 



159 



feeding on the "kohlrabi." They cropped the delicate hyphae 

 with their maxillae, and not with their mandibles, without dis- 

 turbing or shaking the substratum. On several occasions I saw 



FIG. 3. Fungus garden of Sericomyrmex amabilis sp. nov. built in a Petri dish 

 X 2. Photograph by Dr. David Fairchild. 



them devouring injured larvae or pupae, and they greedily fed on 

 the pulp of various fruits, such as mangos and bananas. They 

 also tore off small bits of the inner rind of oranges and bananas 

 and incorporated them in the garden. When such materials 



