1 86 MANUAL OF ZOOLOGY. 



9. " Beitrage zur Kenntniss Wirbelloser Thiere." Frey and Leuckart. 

 1847. 



10. " Icones Histlologicse." Abth. ii. 'Die Binde - Substance der 



Coelenteraten. ' Kolliker. 1866. 



11. " Histoire Naturelle des Coralliaires ou Polypes proprement dits." 



Milne-Edwards and Haime. 1855-60. 



12. "Zoophytes." ' Report of Exploring Expedition under. Capt. Wilkes.' 



Dana. 1848. 



13. " On the Alternation of Generations." Steenstrup. (Eng. Trans, by 



Busk.) 1845. 



14. " Contributions to the Natural History of the United States." (Aca- 



lephse, vols. iii and iv.) Louis Agassiz. 1860-62. 



A. HYDROZOA. 



I. HYDRIDA. 



15. " Memoires pour servir a 1'histoire d'un genre de Polypes d'eau douce, 



a bras en forme de cornes. " Trembley. 1 744. 



16. " Hydra, ein anatomisch entwickelungs-geschichtliche Untersuchung. " 



Kleinenberg. 1872. 



II. CORYNIDA, SERTULARIDA, AND CAMPANULARIDA. 



17. "Monograph of the Gymnoblastic or Tubularian Hydroids." 'Ray 



Society.' Allman. 1871. (The first part of this work comprises 

 an elaborate account of the Hydroida generally.) 



18. " British Hydroid Zoophytes." Hincks. 1872. 



19. " Recherches sur la Faune littorale de Belgique." (Polypes.) Van 



Beneden. 1866. 



20. "Contributions to the Natural History of the United States." 



(Acalephae.) Louis Agassiz. 1860-62. 



21. " North American Acalephse." ' Illust. Catalogue Mus. Comp. Zool.' 



No. ii. (Hydroida, pp. 64-198.) A. Agassiz. 1865. 



22. "Report on the Hydroida of the Gulf- Stream." 'Memoirs of the 



Museum of Comparative Zoology at Harvard.' Allman. 1877. 



III. OCEANIC HYDROZOA. 



23. "Monograph of the Oceanic Hydrozoa." ' Ray Society.' (With a 



general introduction.) Huxley. 1859. 



24. "Die Siphonophoren oder Schwimm-polypen von Messina." Kolliker. 



1853- 



25. "Siphonophoren von Nizza." ' Zoologische Untersuchungen,' ii. 



Leuckart. 1853. 



IV. MEDUSID.E AND LUCERNARIDA. 



[The works quoted under this section deal not only with the above-men- 

 tioned groups as here understood, but also largely with the Medusoid 

 Gonophores of other Hydrozoa.] 



26. " System der Acalephen." Eschscholtz. 1829. 



27. "Die Akalephen des Rothen Meeres," &c. Ehrenberg. 1836. 



28. "Acalephes." (' Suites a Buffon. ') Lesson. 1843. 



29. "Monograph of the British Naked-Eyed Medusae." 'Ray Society.' 



Edward Forbes. 1848. 



30. "Anatomy and Affinities of the Family of the Medusae." 'Phil. 



Trans.' Huxley. 1849. 



