236 



CLAUDE FULLER. 



Part II : Systematic Review (cont.) — 



(2) Studies of Species (cont.) — 



(7) Rhinotermes putoriiia Sjoi<tedt 



(8) Calotermes durbaneusis Hav. 



(9) Cvyptotermes sp. 



(10) Psammotermes allocerns Silv. 



(11) Cubitermes (bilobatiis group) 



(12) Mici'ocerotermes (parvus group) 



282 

 285 

 288 

 290 

 294 

 295 



SYNOPSIS. 



The study of the post-embryonic development of the 

 antenna in South African termites has proved to be one 

 of peculiar difficulty, and it is considered that a preliminary 

 statement of the main conclusions will be of assistance in the 

 subsequent discussion of the facts. 



1. The antenuEe of all termites are fundamentally composed 

 of two sections — a two-jointed scape supporting a flagellum 

 of a variable number of joints. 



2. In a developing antenna the flagellum is subdivided 

 into three zones — an apical, an intermediate and a basal. 

 The apical zone comprises a series of joints in a somewhat 

 well-developed stage, the more basal of the series intergrading 

 with the intermediate zone. The intermediate zone comprises 

 juvenile joints which are more rudimentary in character as 

 they appi'oach the basal. The basal zone is represented by 

 the conventional joint III ; this may be spoken of as the 

 formative zone. 



3. The post-embryonic stages are represented hy a simul- 

 taneous external and internal metamorphosis, and, owing to 

 the transparency of the organs, both phases are often dis- 

 cernible. 



4. The internal metamorphosis is ordinarily in evidence 

 within the conventional joint III. This joint is a capsule 

 containing a series of variously developed joint-elements 

 which arise by a process of proliferation taking place in 

 front of joint II — i. e. at the apex of the scape. 



