290 OX THE MORPHOLOGY ETC. OF THE PAL.^OGNATH^ AND NEOGNATH^. 



Fig. 14. A remex of a nestling Casiiarius aiisiralis, dorsal aspect, before the loss of 



the rliachis described on p. 165. 

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

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

 Fig. 15. A reme.\ of Apteryx mantelli (p. 166), for comparison with that of the young 



Cassowary described p. 165. 



Additional Letters. 



fl. = aftershaft. 

 f/.i?2/.l-3 = anterior intermediate air-sacs 1-3. 

 ff.s. =ala spuria. 

 «y>.= aponeurosis. 



c. = calamus. 

 <".c. = carpal covert. 

 cA. = choaute. 

 c/. = claw. 

 c.p.m. = costo-pulmonary muscle. 

 c.?'. = carpal remex. 

 €.?-. = cubital remiges. 



* = hypothetical carpal covert. 

 **= „ „ remex. 



e. = eye-spots. 

 e<?/. = ecto-brouchia. 

 ent. =ento-bronchia. 

 c?<, = eustachian aperture. 

 /. = filum. 

 A. = lieart. 

 A. = kidney. 

 ?«i. =meso-bronchium. 

 j)».rf.r. = metacarpo-digital remiges. 

 0. = ostium posterius. 

 o6/..se/?. = oblique septa. 

 0. ent. 3 = oi't'\a of cnto-bronchium 3. 

 o.mb. l-.'2 = ostia of outer and inferior lateral 

 branches (1-2) of meso-bronchium. 

 o.syb. = ost\& leading into sub-bronchial sac. 

 o.p.b.s.= „ „ „ pre-bronchial sac. 

 7>.6. = pre-bronchial air-sac. 



pant. 



p.ahd. 



p.a. 



para.b.-- 



p.r. 



rd.. 



rh. 



i-h." 



r.m. 



r.r. 



r.g. 



t. 



t-f. 



t.mj. 



t.md. 



i.m. 



t.ms. 



= posterior intermediate air-sac. 



= posterior abdominal air-sac. 



= pulmonary artery. 



= parabi'oncliia. 



= pulmonary vein. 



=:radins. 



= rhachis. 



= rhachis of aftershaft. 



= ramus. 



= ribbon-shaped prolongations of rami. 



= rima glottidis. 



= tougue. 



= terminal filaments of the rami. 



= tectrices majores. 



= „ medise. 



= ,, minores. 



= ,, marginales. 



= passage from ento-bronchium 1 to 

 vestibule. 



= traverses entire length ento- 

 bronchium 1 to vestibule. 



= passes from ento-bronchium 1 to 

 vestibule. 



= traverses whole length ento- 

 bronchium 4. 

 [ traverse lateral meso-bronchia into 

 i atiteri(U' and posterior inter- 



~ I mediate air-sacs. 



