Pterylography of Photodilus. 



39 



both present. The arms of the former arc conspicuous, 

 arising at the root of the neck, and terminating on a level 

 with the free end of the scapula. The arms of the latter 

 are feebly developed, and are represented only by a feeble 

 and ill-defined row of feathers, which, running up to join the 

 interscapular fork, enclose a space. 



The stem of the lumbar fork is strong, and extends from 

 the convergence of the pre-acctabular ilia backwards to the 

 uropygium, in front of which it terminates in a long fork. 



Pt. cauda. — There are twelve rectrices. 



Pt. colli v entrails (text-fig. 4). — This may be described as a 



Text-fiff. 4. 



Ventral aspect of Photodilus badita, showing the arrangement 

 of the pterylse. 



pt.cap. = pteryla capitis. 

 pt.coU.vent. =^tery\& colli ven- 

 tralis. 



pt.vent. = \)tcYy\a. ventral is. 

 />/.(■)•. = „ cruralia. 

 tr. = trachea. 



