LIST OF TEXT-FIGUEES 



List of Text- Figures. 



Page 



1. Side of the bead and tail from above of Psexulacanilds 



yemenensis 1 45 



2. Head of the Black Swan, with an icicle attaclied to the 



lower mandible 243 



3. Sketch-map of East Africa, showing Mr. Mackwortb Praed's 



route and localities . . • 363 



4. Sketch-map of the valley of the A ncrc 527 



