438 THE ZOOLOGIST. 



one specimen of the plant not infested by the gall-fly. The part 

 attacked seems to be always the base of the leaf, or possibly an un- 

 opened leaf-bud. The gall-capsules at first are pale yellowish green, 

 with irregular reddish staining. As they mature they become dark 

 green, and are aggregated together into a dense mass, through which 

 the leaves continue to grow, but in a stunted and irregular manner ; 



in some instances abortive leaves or bracts occur between the in- 

 dividual capsules. When the capsules are mature they burst and 

 expand like the corolla of a flower, eventually showing a bright 

 apricot-coloured interior of velvety texture, and the whole has quite 

 the appearance of a brilliant inflorescence. The colour of the interior 

 of the capsules deepens from primrose-yellow, on first opening, through 

 nankeen-yellow, to a deep apricot, and then fades to brown and black 

 as the mass withers. The mature capsules seem usually to contain 

 one insect and one cast skin each, but sometimes two capsules coalesce 

 internally before bursting, and in one such combined capsule I found 

 two insects and three cast skins. — W. Henry Hillyer (Princisu, 

 Wassau District, Gold Coast Colony, West Africa. Lat. 5*54° 57' N. ; 

 long. 2-6° 40' W.). 



[This insect was described by Walker in 1851, from specimens 

 received from Sierra Leone, under the name of Psylla ? lata. The 

 genus in which it should be placed is certainly not Psylla, but that 

 question need not be discussed here. Reaumur, in 1737 (' Memoires,' 

 t. hi. mem. x. pi. xxix. figs. 17-24), has detailed the history of a species 

 {Anisotropha ficus) which lives on the fig. Recently Mr. C. P. Louns- 

 bury, the Government Entomologist of Cape Colony, has described 

 the ravages of the Citrus Psylla {Trioza sp.), which attacks any kind 



