1852.] 



found in Southern India. 



107 



5. Atta Dissimilis, N. S. 



About l-10th of an inch long, head oblong, rounded ; eyes mode- 

 rate, antennae suddenly thickening at the last joint, thorax very 

 slightly grooved, abdominal pedicles narrow above, both equally 

 raised, first rather more conic than the second ; abdomen long oval, 

 colour blackish throughout. I have only found this Ant in small 

 numbers on trees in Malabar, 



6. Atta Fxoricola, N. S. 



Worker not 1-1 7th inch long; head oblong square, eyes small 

 advanced ; jaws linear, pointed, antennae very short, last joint sud- 

 denly enlarged ; thorax very slightly grooved, abdominal pedicles 

 about equal, narrow, raised, abdomen long oval ; thorax and legs 

 dark rufous, head and abdomen glossy dark brown. I have ob- 

 tained this very small Ant, of which I have only seen one kind of 

 individual, in small numbers on flowers and leaves at Tellicherry, 

 and it appears to feed solely on vegetable secretions. 



Gen. Ocodoma. 



We now come to a set of Ants extremely numerous over all 

 India, and comprising several species very nearly alike and proba- 

 bly confounded together by those who have not examined them 

 thoroughly. Almost all the species that I have seen have two 

 kinds of neuters, one of them of very large size compared with the 

 ordinary Workers, and which are usually called Warriors. Some 

 points in the history of the economy of these Ants have caused 

 much interest among Naturalists at home with regard to the food of 

 these little creatures. The chief distinction of Ocodoma from Atta 

 consists in the former having some small spines on the thorax. 



7. Ocodoma Malabarica, N. S. 



Worker |th of an inch long, head oval, eyes moderate, jaws round- 

 ed, triangular, pointed, and finely serrated ; antennae long and slen- 

 der; thorax doubly notched and with some small tubercles especially 

 two in the usual situation of the thoracic spines; first abdominal pedi- 

 cle small and come, second large, rounded ; head, thorax and legs, 

 rufous, abdomen blackish ; legs long. 



