86 THE ELASMOBRANCH FISHES 



1884. Haswell, W. a., Studies on the Elasmobranch Skeleton. Proc. Linn. Soc. N. S. 



Wales, Vol. 9, pp. 71-117, pis. 1-2. 

 1906. Hawkes, Mrs. O. A. M., The Presence of a Vestigial Sixth Branchial Arch in the 



Heterodontidae. Jour. Anat. Physiol., 1905-06, Lond., Vol. 40, pp. 81-84, 2 text figs. 



1899. Hay, O. P., Dr. Gadow and Miss Abbott on the Vertebral Column of Fishes. Zool. 

 Bull., Vol. I, pp. 131-141. 



1913. Hoffmann, Ludwig, Zur Kenntnis des Neuroeraniums der Pristiden und Pristio- 

 phoriden. Zool. Jahrb. (Abt. Anat. u. Ontog.), Bd. 33, pp. 239-360, pis. 13-24, 8 

 text figs. 



1809. Home, Everard, On the Nature of the Intervertebral Substance in Fish and Quadru- 

 peds. Phil. Trans. Eoy. Soc. Lond., Vol. 99, 1809, pp. 177-187, pi. 5. 



1887. Howes, G. B., On the Skeleton and Affinities of the Paired Fins of Ceratodus, with 

 Observations upon those of the Elasmobranchii. Proc. Zool. Soc. Lond., pp. 3-26, 

 pis. 1-3. 



1890. Howes, G. B., Observations on the Pectoral Fin-Skeleton of the Living Batoid Fishes 

 and of the Extinct Genus Squaloraja, with especial reference to the Affinities of the 

 Same. Proc. Zool. Soc. Lond., pp. 675-688, 10 text figs. 



1901. HuBER, O., Mitteilungen zur Kenntnis der Copulationsglieder bei den Selachiern. 

 Anat. Anz., Bd. 19, pp. 299-307. Also: Zeitschr. wiss. Zool., Bd. 70, pp. 592-674, pis. 

 27-28, 12 text figs. 



1905. Jaquet, M., Description de quelques parties du squelette du Pseudotriacis microdon 

 Capello. Bull. Mus. Ocean. Monaco, 1905, No. 36, pp. 1-28, pis. 1-8. 



1899. JuNGERSEN, H., On the Appendices Genitales in the Greenland Shark, Somniosus mi- 

 crocephalus and Other Selachians. Danish Ingolf-Exped., Vol. 2, Pt. 2, pp. 1-88, pi. 6, 

 28 text figs. 



1893. Klaatsch, Herm., Beitrage zur vergleichenden Anatomic der Wirbelsaiile. L tjber 

 den Urzustand der Fischwirbelsaiile. Morph. Jahrb., Bd. 19, pp. 649-680, pi. 26, 1 text 

 fig. II. tJber die Bildung knorpeliger Wirbelkorper bei Fischen. Bd. 20, pp. 143-186, 

 pi. 7, 6 text figs. 



1895. Klaatsch, Herm., III. Zur Phylogenese der Chordascheiden und zur Geschichte der 

 Umwandlungen der Chordastruktur. Ibid., Bd. 22, pp. 514-560, pis. 22-23. 



1897. Klaatsch, H., Zur Frage nach der morphologischen Bedeutung der Hypochorda. 



Morph. Jahrb., Bd. 25, pp. 156-169, Taf. 10. 

 1860. KoLLiKER, Professor Albert, "On the Structure of the Chorda Dorsalis of the Plagio- 



stomes and Some other Fishes, and on the Eelation of its Proper Sheath to the Devel- 

 opment of the Vertebrae." Verb. d. phys.-med. Ges. Wiirzburg, Bd. 9, pp. 193-242, 



Tafs. 2-3. 

 1860. Kolliker, Albert, Ueber den Anteil der Chordascheide an der Bildung des Schadel- 



grundes der Squalidae. Wiirzburg. Naturwiss. Zeitschr., Bd. 1, pp. 97-105. 

 1909. LuBOSCH, W., Anpassungserscheinungen bei der Verkalkung des Selachierknorpels. 



Anat. Anz., Bd. 35, pp. 1-8, 8 text figs. 

 1880. Metschnikoff, Olga, Zur Morphologic des Beeken- und Schulterbogens der Knor- 



pelfische. Zeitschr. wiss. Zool., Bd. 33, pp. 423-438, Taf. 24. 

 1879. Mivart, St. George, Notes on the Fins of Elasmobranchs, with Considerations on the 



Nature and Homologues of Vertebrate Limbs. Trans. Zool. Soc. Lond., Vol. 10, 



pp. 439-484, pis. 74-79, 6 text figs. 

 1887. Parker, T. J., Notes on Carcharodon rondeletii. Proc. Zool. Soc. Lond., pp. 27-40, 



pis. 4-8. 



1890. Parker, T. J., On the Presence of a Sternum in Notidanus indicus. Nature, Vol. 43, 

 p. 142, 1 text fig. 



