ORIENTATION I I 3 



Thus in Fig. 62, where 1 indicates the front tibia, the apex 

 (A) is broader than the base (B) ; in the antennae the apex is 

 the front part, while in the cerci the apex is the posterior part ; 

 in the last abdominal segment (2) the base (B) is in front of the 

 apex (A). The terms longitudinal and transverse should always 

 be used with reference to the two chief axes of the body-surface ; 

 longitudinal referring to the axis extending from before back- 

 wards, and transverse to that going across, i.e. from side to side. 



VOL. v 



