THE CAMPANtJLARIDiE AND THE BONNEVIELLID^. 105 



Gegbnbauer, C Zur Lelire vom Generationsweclisel und der Fortpflanzung bei Medusen und Polypen. 



(Verh. physic. -med. Ges. Wiirzburg, vol. 4, p. 154.) Wurzburg, 1854. 

 Mentions Obelaria gelatinosa, Obelia geniculata, 0. dichotoma. A number of 

 figures illustrate ' ' Campanularia n. sp. (probably Orthopyxis caliculata) and smObelia. 

 Versucli eines Systemes der Medusen mit Besclii'eibung neuer oder weniggekannter 

 Formen; zugleicli ein Beitrag zur Kenntniss der Fauna des Mittelmeeres. 

 (Zeitsch. fiir wiss. ZooL, vol, 8, pt. 2, 1856.) Leipzig, 1857. 

 A few campanularian medusas mentioned. 



GiARD, Alfred Sur I'etiologie du Campanularia caliculata Hincks. (Comptes Rendus Hebdoma- 



daires des Stances et Memoires de la Soci6t6 Biologique, 1898, p. 17.) Paris, 1898. 

 Finds that Orthopyxis caliculata shows two forms of reproduction, one by 

 fixed sporosacs and the other by free but relatively imperfect medusse (Agastra), 

 genitive products produced along branched radial canals. 



Gmelin, p. H In Linnseus, Systema Natura, 13th edition, Aucta and reformata cura J. F. GmeUn, 



vol. 1, part 6. 1789-96. 



Gives brief descriptions of Campanularia verticillata, C. volubilis, Obelia geni- 

 culata, 0. dichotoma, and Obelaria gelatinosa. 



GoLDFuss, G. S *Handbuch der Zoologie, Erste Abtheilung. Niirnberg, 1820. 



GossE, P. H A Manual of Mai-ine Zoology for the British Islands, vol. 1. London, 1855. 



Defines CampanularidEe and names six common species. 

 A Naturalist's Rambles on the Devonshire Coast. London, 1858. 



Illustrated with excellent colored plates. Figure of the medusa of Obelia 

 geniculata. Obelaria gelatinosa also described. 



Grant, R. E Outlines of Comparative Anatomy. London, 1835. 



Gives a figure of Obelia dichotoma. 



Gray, John Edward List of the Specimens of the British Animals in the Collection of the British Museum. 



Part 1. Radiated Animals. London, 1847. 



A complete list of Campanularidas then known from British coasts. 



Greene, J. P OntheAcalephs of the Dublin coast; being a part of a series of "Notes on Zoology". 



(Natural History Review, vol. 4, 1857.) London, 1857. 



Lists Thaumantias inconspicua and other medusse of that genus. 

 On the Morphology of the Hydrozoa, with reference to the constitution of the Sub- 

 kingdom Coelenterata. (Natural History Review, vol. 3, p. 237.) London, 1857. 

 A general discussion without much reference to the Campanularidee. 

 A Manual of the Subkingdom Coelenterata. London, 1863. 



Describes the development of- Gonothyrsea loveni and defines the family 

 Campanularids . 



Haeckel, Ernst Das System der Medusen, Erster Theil, Einer Monographie der Medusen. (Denk- 



schriften der Medicin.-Naturwissenschaftlichen Gesellschaft zu Jena, vol. 1. 

 Jena, 1880. 



A sumptuous monogi-aph in wliich a few Leptomedusse with known campanu- 

 larian colonial forms are described. 



Hallier, E *Nordseestudien, p. 279. Hamburg, 1863. 



Hamann, Otto Der Organismus der Hydroidpolypen. (Jenaische Zeitschrift fiir Naturwissenschaft, 



vol. 15, new ser., vol. 8.) Jena, 1882. 



Discusses homology between the sporosac and medusa of Oonothyrxa and the 

 histology of Obelia geniculata. 



Hargitt, Charles W Synopses of North American Invertebrates. XIV. The HydromedusEe. (American 



Naturalist, vol. 35, pt. 1, pp. 301-315; pt. 2, pp. 379-395.) 1901. 



Convenient for use in identifying campanularian medusa, of which three 

 species are figured. 

 The Medusae of the Woods Hole Region. (Bulletin of the Bureau of Fisheries for 1904, 

 vol. 24, pp. 21-79). Washington, 1904. 



Figm-es and describes the campanularian medusae of the region. 



Hartlaub, Clemens Beobachtungen iiber die Entstehung der Sexualzellen bei Obelia. (Zeitschr. wiss. 



ZooL, vol. 41, 1884, pp. 159-185.) 1884. 



The title sufficiently indicates the contents of the paper. 

 Die Hydromedusen Helgolands. 2. Bericht. (Beitrage zur Meeres-Fauna von Hel- 

 goland. X. WissenschaftHche Meeresuntersuchungen herausgegeben von der 

 Kom mission zur Untersuchung der Deutschen Meere in Kiel und der biolo- 

 gischen Anstalt auf Helgoland, new ser., vol. 2, p. 1, sec. 2.) 1897. 



Original description of the genus Obelaria and a good description and figures 

 of 0. gelatinosa. 



Describes the medusa Agastra mira, which has since been found to be the 

 medusa of Orthopyxis caliculata. 



