INTESTIlSrAL CANAL OF THE ICHTHTOPSIDA. 407 



There is indicated iu the concluding sentence of the preceding 

 section one of the next steps iu this inquiry; others lead to a 

 further investigation into the histology and development of the 

 appendix digitiformis, and to a study of the comparative histology 

 of those structures to which the terms " csDCum coli " and 

 " appendix vertniformis " have been applied. Upon these I 

 propose to enter on a future occasion. 



VI. Listof leading Autliorities referred to. 



1. Bedriaga, J. V. — " Amphisbeena cinerea," Archiv f. Naturgesch. 



Bd. 50. pp. 23-77. 1884. 



2. Blanchard^ R. — " Ueb. d. Ban u. d. Entwicklung d. sogenannten 



fiogerformigen Driise b. d. Knorpelfischen," Mittheilungen a. d. 

 Embryolog. Instit. Wien, Heft iii. pp. 179-197. 1878-79. 



3. Boas, J. E. v. — " Ueber die Arterienbogen der Wirbelthiere," 



Morph. Jahrb. Bd. xiii. pp. 115-118. 1888. 



4. CuviER & Valenciennes. — Hist. Nat. des Poissons. Paris. 



T. i. 1828. 



5. CuviER & Valenciennes. — Ibid. T. vi., 1830. 



6. CuviER & Valenciennes. — Ibid. T. xix., 1846. 



7. DuMERiL, A. — Hist. Nat. des Poissons (Ichthyologie generale). 



Paris. T. i., 1865. 



8. EcKER & WiEDERSHEiM. — Die Anatomie des Frosches. Braun- 



schweig, 1864-1882. 



9. Edinger, L. — "Ueb. d. Sclileimhaut d. Fisebdarmes, nebst Benier- 



kungen z. Phylogenese der Driisen des Darrarohres," Archiv f. 

 mikr. Anat. Bd. xiii. pp. 651-692. 1877- 

 . Garman, S. — " Chlamydoselachus anguineus, a living species of 

 Cladodont Shark," Bull. Mus. Comp. Zool. Camb., Mass. vol. xii. 

 pp. 1-35. 1885. 



11. GtTNTHER, A. — Report on the Deep-Sea Fishes collected by 



H.M.S. * Challenger,' Zool. vol. xxii. 1887. 



12. HocHSTETTER, F. — " Beitr. z. vergleichend. Anat. u, Entwicklungs. 



d. Venensyst. der Amphibien und Fiscbe," Morph. Jahrb. vol. 

 xiii. pp. 119-172. 1888. 



13. Hoffmann, C. K. — Bronn's " Klassen und Ordnungen d. Thier- 



reichs," Bd. vi. Abth. ii. " Amphibian." Leipzig, 1873-78. 



14. HoFFMA^N, C. K.—Ibid. Bd. vi. Abth. iii. " Reptihen." 1886. 



15. Home, E. — Lect. on Comp. Anat. London, vol. i. (text) 1814. 



16. Home, E. — Ibid. vol. ii. (plates) 1814. 



17. Hyrtl, J. — " Das arterielle Gefasssystem d. Monotremen/' Denkschr. 



d. kais. Akad. d. Wissensch. Wien, Bd. v. pp. 1-20. 1853. 



18. Hyrtl, J. — "Das art. Gefasssystem d. Rocheu," Ibid. Bd. xv, 



pp. 1-36, 1858. 



