236 Mr. W. P. Pycraft on the 
Text-fig. 13. 
Dorsal aspect of the head of Coliws erythromelon, shewing the 
parietal apterion. 
apt.cap.=apterion capitis, 
Text-fig. 14. 
Dorsal aspect of the head of Colius capensis, shewing the 
parietal apterion. 
apt.cap.=apterion capitis. 2.= Kye. 
Text-fig. 15. 
Dorsal aspect of the head of Cypselus apus, shewing the 
parietal apterion (see p. 249). 
apt.cap.=apterion capitis. £.=Eye. G.=Gape. 
