Ants from British Guiana. 375 



Tribe T A P i N M i N I (Emery) . 

 Azteca schimjyeri, Em., ^ . 



" I have only once taken this species. It appears to infest 

 the belt of low-frrowing trees termed ' Courida ' [Avicennia 

 nitiiiu), which hinge the seashore in British Guiana. In 

 this particular in.-?tance the ants were attending the coccid 

 Lecaiiiain wquale, Green, which had intcsteJ several trees. 

 Eormicarium unobserved.'^ 



-^1. chartifex, For., subsp. laticeps. For., ^ . 



" A common species. Forms large carton nests on the 

 trunks of tree?:, and is especially fond of the mango for this 

 purpose. fc)onie nests are as much as two feet in length 

 This species intlicts a very sharp bite, and on the slightest 

 disturbance the ants swarm out to attack the intruder, 

 n)aking an audible rustling sound. The nests may be 

 easily destroyed by fire, but a breeze is required to keep the 

 conflagration smouldering until the nest is entirely consumed. 

 Within six months, however, the ants will be found to have 

 made considerable progress in the construction of another 

 nest, frequently in the same spot." 



West Bark, 1911. 



A. instabilis, Sm. 

 British Guiana, 20.4. 15. 



A. trigona, Em., subsp. suhdentata^ For. 

 Aruka River, N.W. District, 5. 6. 15. 



A. aljaroi, Em., var. ovaticeps, For., ^ . 



"An uncommon species. Inhabits the medullary cavities 

 of the trumpet-tree {Cercrop'ia peltata) .''^ 

 Kockstone, I'Jl-l. 



A. velox, For., $ . 

 British Guiana, 20. 4. 15. 



Tapinoma melanocephahim, F., ^ . 

 Cosmopolitan. In houses, 1914. 



Tapinoma sp. 



