548 



olfaclives; etccs cartilages persistent meme chez les types superieurs, quoi- 

 que sous une forme tri-s n'-diiile, en conservant leurs rapports ovec les cap- 

 sules olfaclives. Clio/ les Cyclostomes, ils sont plus developpes quo dans tout 

 aulre type de Vertebres. 



La ^Liiilieulion de ces cartilages est encore tres obscure; mais comme ils 

 servcnt en parlie de soulien aux levres et aux dents corners des Cycloslomes 

 ainsi quo du Telard de Grenouille, je suis porte a les considcrer comme les 

 ivstes d'un squclette primitif qui supportail la bouche en suc,oir dont, pour 

 des raisons deja enoncccs (p. 297), je crois que les ancetrcs des Vertebres 

 actuels 6laient pourvus. 



(139'j A. DUCKS. Rcchprchcs sur rOsU'ologie et la myologie des Batracicns a leurs 

 diflV; rents ages. Paris, Mem. savants etrang. 1835, et Ann. Sc. not., I, 1834. 



(440) C. GEGENBAUR. Untersucfiungen z. veryleich. Anat. d. \Virbdlhiere, III. Heft. 

 Das Kopfsk-let d. Seladiier. Leipzig, 1872. 



(441) GUNTHER. Beat/, i'/.b. die Entwick. d. GehSrorgans. Leipzig, 1812. 



(442) O. HERTWIG. Ueb. d. Zahn system d. Amphibien u. seine Bedeutung f. d. Ge- 

 nese d. Sk''lets d. Mundhohle (Archiv f. mikr. Anat. XI, 1874, suppU. 



(443) T. H. HUXLEY. On the theory of the vertebrate skull. (Proc. Royal Soc. IX. 

 *858). 



(444) T. II. HUXLEY. The Elements of Comparative Anatomy. London, 1869. 



(445) T. II. HUXI.EY. On the Malleus and Incus (Proc. Zool. Soc. 1869). 

 (416) T. H. HUXLEY. On Ceratodus Forsteri (Proc. Zool. Soc. 1876). 



(447) T. II. HUXLEY. The nature of the craniofacial apparatus of Petromyzon (Journ. 

 of Anitt. and Phys., X, 1876). 



(548) T. II. HUXI.EY. The Anatomy of Vertebrated Animals. London, 1871. 



(449 W. K. PARKER. On the structure and development of the skull of the Common 

 Fowl (Callus Do.nesticus) (Phil. Trans., 1809). 



(45(1) W. K. PARKHB. On the structure and development on the skull of the Common 

 Frog (Rana temporaria) /'A/7. Trans. 1871). 



(451) W. K. PABKER. On the structure and development of the skull in the Salmon 

 (Salmo salar). Bikerian Lecture (Phil. Trans. 1873). 



(452) W. K. PARKER. On the structure and development of the &kull in the Fig (Sus 

 scrofaj \(Phil. Trans. 1871). 



(453) W. K. PARKER. On the structure and development of the skull in the Batradiia. 

 Part ]l(Phil. Trans. 1876). 



(454) W. K. PARKER. On the structure and development of the skull in the Urodeluus 

 Amphibia. Part III (Phil. Trans. 1877). 



(455) W. K. PARKER. On the structure and development of the skull in the Common 

 Snake (TropMonotus natrix) (Phil. Trans. 1878). 



(456) \V. K. PARKER. On the structure and development of the skull in Sharks and 

 Skates (Trans. ZOO/OQ. Soc. 1878, X, pt. IV). 



(457; VV. K. PARKER. On the structure and development of the skull in the Lacerlilin. 

 Pt. I, Laceria agilis, L. viridis and Zootoca vivipara (Phil. Trans. 1879). 



(458) W. K. PARKED. The development of the Green Turtle (The Zoology of thr 

 Voyarjeofll. M. S. Challenger. I, pt, V). 



(459) W. K. PARKER. The structure and development of the skull in ihe Butrachia. 

 Pt. Ill (I'hil Trans. 1880;. 



(.'iG") VV. K. PARKEB et G. T. BETTAXY. The Morphology of the Skull. London, 1877. 



(4GO') II. livniKi:. Entwkk. d. Walter. Konigsberg, IH39. 



(461) C. U. HKICHERT. Ueber die Visceralbogcn d. Wirbelthiere (Mulla's Archiv. 1837). 



^4U2) VV. SALENSKY. Beitriigo z. Entwick. d. knorpeligcn Gehorknochelchen (Morphul. 

 luhrtiw:h, VI, 1S80). 



Voycz aussi Kiillikcr (n 298), particulit-remcnt en ce qui concerne le cram- <lc 

 niommc et des Mammiferes, et Gotte (n n 296). 



