376 Mr. W. C. Crawley on 



V. Subfam. Camponotin^, Forel. 



Section EUCAMPONOTINyE, Forel. 

 Tribe Prenolepidii, Forel. 



Prenolepis longicornis, Ltr., ^ . 



" A commonlj occurring and very widely distributed ant 

 in British Guiana. To be found as an inhabitant of most 

 houses. Is especially fond of sugar and dead insects of all 

 kinds. I have also frequently observed it to infest steamers 

 and other craft which call at the port of Georgetown. 

 Formicarium usually constructed just beneath the surface of 

 the soil at the base of posts, walls, &c., or in crevices in 

 wood-work ; they are usually small. Houses may be 

 successfully cleared of them by exposing a mixture of 

 molasses and arsenic or by hunting for tlie uests and 

 destroying them with carbon bisulphide.^' 



A well-known cosmopolitan species. 



Tribe Camponotini, Forel. 

 Camponotus {Myrmothria') abdominalis, s. str., F., ^ . 



" Inhabiting the disused sacs of the larva of the moth 

 CEceti'cics kirhyiJ" 

 Georgetown, 1915. 



G. {M.) abdominalis, F., var. mediopallidus, ¥., ^ , ? . 

 Issororo, N.W. District, 1914. 



C. (M.) abdominalis, F., subsp. stercorarius, For., ? , ^ . 



These specimens answer very well to ForeFs description 

 and appear identical with examples received from him. 



" Nesting under leaf-sheaths of sugar-cane," Botanic 

 Gardens, Georgetown, 1914. 



(C. M.) femoratuSj F., ^ . 

 Issororo, N.W. District, 1913. 



C. (^Myrmosphincta) sexgutiatus, F., var. ornatus, Emery, 



Botanic Gardens, Georgetown, 1914, 1915. ^ major and 

 minor. 



These specimens answer perfectly to Emery's description. 

 From small carton nest on underside of palm-leaf. 



