372 Mr. W. C. Crawley on 



following species of Cocciflfe : Fsetidococcus citri^ Eisso j 

 Coccus hesperidumj L. ; Saissetia nigra^ Nietn." 

 Botanic Gardens, Georgetown, 1914. 



C. maculatus, Eur., ? . 



" On leaves of mango tree," Botanic Gardens, Georgetown, 

 1915. 



Tribe Dacetini, For. 

 Daceton arm'gerum, Ltr., ^ . 



'' Fairl}^ common in some districts. When captured with 

 the forceps and placed in alcohol it emits from time to time 

 a sharp click, which continues for some time after being 

 placed in the liquid. Has been observed to attend the 

 Coccid Pseudococcus citri, llisso, on cacao pods. Formicary 

 unobserved." 



British Guiana, 1914. 



Tribe Attini (F. Sm.). 

 Atta (s. str.) Icevigata, Sm., 1/, ^ media. 



"This species apjiears to inhabit the sandy, soils of the 

 interior. Tlie ]n-ocess of cutting up leaves and carrying 

 them into the nest is carried on exclusively at night, com- 

 mencing shortly after sundown and ceasing just before dawn. 

 I have always observed this species to carry pieces of dead 

 and dry leaves into the nest, not green leaves as with other 

 species of leaf-cutting ants." 



Kockstone, 1914. 



A, (s. str.) cephalotes, L., 1/. 



" The common leaf-cutting ant of British Guiana. The 

 local name is ' Coushi ' or ' Acoushi ' ant. It seems to 

 prefer the lighter sandy soils for its nests, and these are 

 frequently found in the large sand-reefs which intersect the 

 heavy clay soils in some districts. The formicaries are 

 usually very large and have long underground galleries. 

 This species works at leaf-cutting exclusively at night, though 

 in the daytime some of the smaller forms may occasionally 

 be seen carrying off particles of sand and depositing them at 

 the exits of the galleries. Slight disturbances, such as those 

 caused by a person walking about on the surface of the nest, 

 are sufficient to arouse the ants, including some of the largest 



