— 114 — 



5. The connection betweon the Dipnoans and Ihe Stapedifera is 

 still missing. 



6. Some remarks on the nomenclature of the éléments of the 

 vertébral cokimn. 



Owen's names « neurapophysis » and « pleurapophysis » are not 

 correct ; the neural and pleural arches are no processes of the verte- 

 brae, but are distinct parts. 



The two éléments composing the neural arch ought to be called 

 the « neuroids » ; the two éléments composing the pleural arch, 

 the « pleur oids ». 



The spines conuected with the neuroids ought to be called. as 

 before, neural spines ; those connected with the pleuroids, pleural 

 spines. 



The real centrum of the vertebra ought to be called cenlrum ; 

 the latéral éléments composing it, hemicentra (Albrecht), not 

 pleurocentra. 



The name intercentrum ought to be preserved. 

 . The part of the intercentrum, centrum, or neuroid to which the 

 capitulum is articulated, may retain the name parapophysis ; the 

 part of the centrum or neuroid to which the tuberculum is articula- 

 ted, may retain the name diapophysis (1) ». 



— En 1889, M. Baur revenait (2) sur ce sujet, pour confirmer 

 et compléter ses résultats. 11 disait notamment : 



« I hâve nothing to change in thèse gênerai results, but can add 

 some important facts relating to number 4 and 5. 



The connection between higher vertébrales and fishes is found 

 to be the condition represented by Lepidosteus (3). 



The anterior part ofiàe post-anal portioyi of the tail in Le^^'i- 

 dosiens shows Ihe co?idiliou of the higher verteb^-ates, the posie- 

 7nor part that of fishes (4). 



So far it has been, the opinion that tlie éléments of Uie anal and 



(1) G. Baur, On the Morphology of Ribs, p. 945. 



(2) G. Baur, On the Morphology of Ribs aad the FaLe of the Actinosts of the Mé- 

 dian Fins in Fishes. Journal of Morphology (G. 0. Whitman et E. P. Allis Jr.). 

 Boston, 1889, vol. III, p. 463. 



(3) G. Baur, On the Morphology of Ribs, etc., p. 464. 



(4) G. Baur, On the Morphology of Ribs, etc., p. 465. 



