290 ON THE MORPHOLOGY ETC. OF THE PALJEOGNATILE AND NEOGNATH^E. 



Fig. 14. A remex of a nestling Casuarius australis, dorsal aspect, before the loss of 



the rhachis described on p. 165. 

 Fig. 14 a. Ventral aspect of fig. 14, to show the peculiar rhachis. 

 Fig. 14 b. Section of the rhachis of figs. 14-14 a (p. 165). 

 Fig. 15. A remex of Aptery'x mantelli (p. 166), for comparison with that of the young 



Cassowary described p. 165. 



Additional Letters. 



a.= 

 a.int. 1-3 



a.s.= 

 ap 



c.c. 

 ch.= 

 cl.-- 



c.p.m.- 



C.T.- 



c.r.- 



*: 



**: 



e.- 



ect.- 



ent. ■■ 



eu.- 



/■■■ 



h.: 

 L: 



mb. 



m.d.r. 



o. 



obl.sep. 



cent. 3 



o.mb. 1 



o.sub. 



o.p.b.s, 



p.b. 



aftershaft. 



= anterior intermediate air-sacs 1-3. 



ala spuria. 



aponeurosis. 



calamus. 



carpal covert. 



choanse. 

 = claw. 



= costo-pulmonary muscle. 

 = carpal remex. 

 = cubital remiges. 

 = hypothetical carpal covert. 

 „ remex. 

 = eye-spots. 

 = ecto-bronchia. 

 = ento-bronchia. 

 = eustachian aperture. 

 = fihim. 

 = heart. 

 = kidney. 



= meso-bronchium. 

 = metacarpo-digital remiges. 

 = ostium posterius. 

 = oblique septa. 

 = ostia of ento-bronchium 3. 

 -2 = ostia of outer and inferior lateral 

 branches (1-2) of meso-bronchium. 

 = ostia leading into sub-bronchial sac. 

 = „ ,, „ pre-bronchial sac. 

 = prc-bronchial air-sac. 



p.int. = posterior intermediate air- sac. 

 ^.«M. = posterior abdominal air-sac. 

 p.a. = pulmonary artery. 

 para.S.=parabronchia. 

 p.v. — pulmonary vein. 

 rd.= radius. 

 rA. = rhachis. 



?'h."= rhachis of aftershaft. 

 r.m.= ramus. 



r.r.= ribbon-shaped prolongations of rami. 

 r.g. =rima glottidis. 



t. — tongue. 

 t ./. = terminal filaments of the rami. 

 t.mj. =tectrices majores. 

 t.md. — „ mediae. 

 t.m. = ,, minores. 

 t.ms.= ,, marginales. 



3 *—*= = passage from ento-bronchium 1 to 



vestibule. 

 4,,—* ^traverses entire length ento- 

 bronchium 1 to vestibule. 

 = passes from ento-bronchium I to 



vestibule. 

 = traverses whole length ento- 

 bronchium 4. 



traverse lateral meso-bronchia into 

 anterior and posterior inter- 

 mediate air-sacs. 





