[The works quoted under this section deal not only with the above-mentioned 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," etc. 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.

31. "Der Generation - Wechsel und die Fortpflanzung der Medusen."

Gegenbaur. 1854.

32. "Versuch eines Systems der Medusen." 'Siebold and Kolliker's Zeitschrift,' 1857. Gegenbaur.

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

(Acalephae, vols. ii. and iii.) Louis Agassiz. 1860-62.

34. "North American Acalephae." 'Ill. Cat. Mus. Comp. Zool.,'ii. A

Agassiz. 1865. .

35. "Monograph of the Gymnoblastic or Tubularian Hydroids." 'Ray Society.' Allman. 1871.

36. "Ueber eine neue Form des Generation-wechsel's, bei den Medusen," etc. 'Monatsbericht der Kon. Akad. der Wiss. Berlin,' 1865. (Trans. Annals of Nat. Hist., 1865.) Haeckel.

37. " Beitrage zur Naturgeschichte der Hydromedusen." Haeckel. 1865.

38. " Studien uber die Entwickelung der Medusen." 'Siebold and Kolliker's Zeitschrift,' 1874. Metschnikoff.

39. "Life-Histories of Animals." Packard. 1875.

V. Graptolitidae

40. "Graptolites de Boheme." Barrande. 1850.

41. "Ueber Graptolithen." Scharenberg. 1851.

42. "Die Graptolithen." 'Versteinerungen der Grauwacken-formation.'

Geinitz. 1852.

43. "Graptolites of the Quebec Series." 'Descript. of Canadian Organic Remains.' Decade ii. Hall. 1865.

44. " British Graptolites." ' Siluria,' 4th Edition, Appendix. Carruthers.


45. "Monograph of the British Graptolitidae." Part i., General Introduction. Nicholson. 1872.

46. "Morphology and Affinities of Graptolites." 'Annals Nat. Hist.,'

1872. Allman.

VI. Hydrocorallinae

47. "Contributions to the Natural History of the United States." Louis Agassiz. (The animal of Millepora is figured, vol. ii., pl. xv., and the genus is referred to the Hydrozoa.)

48. "Grundzuge der Zoologie." Claus. 1874.

49. "Observations critiques sur la classification des Polypiers paleozoiques." Compt. Rend. t. lxxx., 1875. Dollfus.

50. "Notes on Two Species of Millepora," etc. 'Phil. Trans.,' 1876.

Moseley. (This memoir also contains a note on the structure of a Stylaster.)

51. "Structure of a Species of Millepora occurring at Tahiti." 'Annals Nat. Hist.,' 1876. Moseley.

52. "Preliminary Note on the Structure of the Stylasteridae." 'Annals Nat. Hist.,' 1877. Moseley.

53. "On the Actinozoan Nature of Millepora alcicornis." ' Annals Nat.

Hist,' 1876. Nelson and Martin Duncan.

54. "On the Structure of the Stylasteridae." "Phil. Trans.,' 1878.


B. Actinozoa.

I. Zoantharia

55. "Actinologia Britannica." Gosse. 1860.

56. "Ueber die Polypen im Allgemeinen und die Actinien insbesondere."

Rapp. 1829.

57. "Memoire sur les Edwardsies." 'Ann. Sci. Nat.,' 1842. Quatrefages.

58. "Memoire sur le Cerianthe." 'Ann. Sci. Nat.,' 1854. Haime.

59. "Structure of Actinia and Corals." 'Sitzungsbericht Oberhess.

Gesellsch. fur Natur. und Heilkunde,' 1871. Schneider and Rotteken.

60. "Edwardsia." * Quart. Journ. Micr. Sci.,'vol. lxii. Allman.

61. "On some New Forms of Actiniaria, dredged in the Deep Sea, with a description of certain Pelagic Surface-swimming Species." 'Trans. Linn. Soc.,' ser. 2, vol. i., 1877. Moseley.

62. "Report on Zoophytes" (with Atlas). ' U.S. Exploring Exped. under Wilkes.' Dana. 1849. 63. "Corals and Coral-Islands." Dana. 1872.

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

Milne-Edwards and Haime. 1857-60.

65. "Beitrage zur physiologischen Kenntniss der Corallenthiere im Allgemeinen, und besonders des Rothen Meeres." 'Abh. k. Akad. Wiss. Berlin,' 1834. Ehrenberg.

66. "Developpment des Coralliaires." 'Archives de Zool. Experiment.,'

1872-73. Lacaze-Duthiers.

67. "Corals." 'Encyclopaedia Brit.' 9th ed., vol. vi., 1877. Nicholson.

68. "On the Structure and Distribution of Coral-Reefs." Darwin. 1874.

(2d ed.)

69. "Ueber die Natur und Bildung der Corallen-inseln und Corallenbanke im Rothen Meere." 'Abh. Kon. Akad. Wiss. Berlin,' 1834. Ehrenberg.

70. "Polypiers Fossiles des Terrains Paleozoiques." Milne-Edwards and Haime.

71. "Monograph of the British Fossil Corals." 'Palaeontographical Society.' Milne-Edwards and Haime.

72. "British Fossil Corals." (Supplement to the preceding.) 'Palaeontographical Society.' Martin Duncan.

73. "Introduction a l'etude des polypiers fossiles." Fromentel. 1858-61.

74. "Reports on the British Fossil Corals." ' Rep. Brit. Assoc.,' 1869-71.

Martin Duncan.

75. "Deep-sea Corals." ' Illust. Cat. Mus. Comp. Zoology,' No. IV.

Pourtales. 1871.

76. "On the Affinities of the Palaeozoic Tabulate Corals with Existing Species." 'Amer. Journ. Sci. and Art.,' 1872. Verrill.

77. "On the Structure and Affinities of the 'Tabulate Corals' of the Palaeozoic Period." 1879. Nicholson.

II. Alcyonaria

[Various works previously quoted are largely concerned with the Alcyonaria, such as Nos. 62, 63, and 64; but the following additional works may be noted: - ]

78. "Anatomisch-Systematische Beschreibung der Alcyonarien." Kolliker. 1870.

79. "On the Structure and Relations of the Alcyonarian Heliopora caerulea," etc. 'Phil. Trans.,' vol. 166, 1876. Moseley.

80. "Histoire Naturelle du Corail." ' Archives Zool. Exper.,' 1872-73.


III. Rugosa

[The Rugosa are extensively, or even monographically, treated of in various works already quoted - e.g., Nos. 64, 70, 71, 74; but a few additional sources of information may be indicated.]

81. "Monographic der Sclerodermata Rugosa aus der Silur-formation Estlands," etc. Dybowski. 1873.

82. "Beitrage zur Kenntniss Fossiler Korallen." Kunth. 1870.

83. "Guynia and Haplophyllia." ' Phil. Trans.,' 1872. Martin Duncan.

IV. Ctenophora

[Apart from special papers, only one or two of which can be noted here, the Ctenophora are treated of in many of the works previously referred to, especially in Nos. 2, 3, 14, 21, 23.]

84. "Studien uber Organisation und Systematik der Ctenophoren."

'Wiegm. Arch.,' 1856. Gegenbaur.

85. "Entwickelungs-geschichte der Rippenquallen." 'Mem. Acad. St Petersburg,' x., No. 4. Kowalewsky. 1866.

86. "Embryology of the Ctenophorae." 'Mem. Amer. Acad. Arts and Sci.,' 1874. A. Agassiz.

87. "Zoologische Studien auf Capri." Eimer. 1873.