Chap. I. 



HISTORY OF THE ACALEPIIS. 



25 



date, Avliich, however, contain so little concerning the strncture or embryonic develop- 

 ment of the Acalephs, that they may fairly be enumerated here. Such are Peach's 

 Observations on the Luminosity of the Sea ; ^ Liitken's ' classification of the Medusa; ; 

 Forbes and Goodsir's'" description of new species; F. Miiller's'' Meduste of Santa 

 Catharina; Alders's'' new Biitish Hydroids, and Catalogue of tlie Zoophytes of North- 

 umberland ; Gould's enumeration of those of Massachusetts ; " Sars's, and Leuckart's 

 Contributions to those of the Mediterranean ; " Gosse's Rambles along the British 

 shores,^ etc.; the Dictioiniaire des Sciences Naturelles," the Dictionnaire Classique,^" 

 Ersch and Gruber's Encyclopadie," the Isis of Oken, the Annales des Sciences Natu- 

 relles, the Archiv fiir Naturgeschichte, the Zeitschrift fiir wissenschaftliche Zocilogie, 

 Miiller's Archiv, the Annals and Magazine of Natural History ; and the innumerable 

 smaller periodical publications, and proceedings of learned societies of our time, 

 should also be consulted. Enough is now known of the Acalephs to sho^v. that, 

 since they undergo tlie most extraordinary changes during their life, the history 

 of no one species can be considered as satisfactory before it has been traced in 

 all its conditions. Henceforth, mere descriptions of isolated forms can have but 

 a very limited interest. The time when it could be thought sufficient merely to 

 draw up a diagnosis, in oi'der to characterize a species, is indeed gone for the 

 Acalephs, and, I trust, for other classes of animals also. This great change in the 

 requirements of our science was chiefly Ijrought al)out by the investigations related 

 in the next section. 



^ Peach (Ch. W.), Observations on the Lumi- 

 nosity of the Sea, with Descriptions of the several 

 Objects wliieh cause it, Ann. ami Maj?. iSTat. Hist. 

 18J0, VI. p. 42.5. 



- Ll'tkex (C. F.), Ueber (lie systematisclie Grup- 

 pirung der Meilusen, Vidensk. Meddels. 184y-18:)0, 

 [1. !■"). I only know this paper from the abstract 

 in Arch. f. Naturg. 1854, XX. p. 424. 



^ Forbes (Edw.) and C4ooDsm (J.), On some 

 remarkable marine Invertebrata, new to llie Eritisli 

 Seas, Trans. Eoy. Soc. Edinb. IS.'.l, XX. p. 307. 



'' Ml'LLER (Fr.), Zwei neue Qnallen von Santa 

 Catharina (Brasilien), Abh. Nat. Oes. Halle, 18.30. 

 V. ,,. 1. 



^ Alder (.Jo.s.), Notice of some new Genera 

 and Species of British Hydroid Zoophytes, Ann. 

 and Mag. Nat, Hist. 185G, XVIII. p. 353 and 439. 

 — Catalogue of the Zoophytes of Northumberland 

 and Durham, Trans. Tyneside Natur. Club ; in ab- 

 stract in Micr. Journ. V. p. 242. 



VOL. in. 4 



" Gould (A. A.), Report on the Invertebrata 

 of Massachusetts, Boston, 1841, 8vo. 



' Sars (M.), Bidrng til kundskaben om Middel- 

 liavcts Littoral-Fauna, Reisebemarkninger fra Ita- 

 lien, Christiania, 1857, 8vo. Abstracts of it may be 

 found in Arch. Naturg. 1858, IL p. 156 and 163. 

 ■ — Leuckart (R.), Beitrage zur Kenntniss der Me- 

 diisenfauna von Nizza, Arch. Naturg. 1856, I. p. 1. 



^ Gosse (Th. it.). Naturalist's Rambles on the 

 Devonshire Coast, London, 1853, 1 vol. 8vo. fig. — 

 Tenby, a Sea-side Holiday, London, 1856, 1 vol. 

 8vo. tig. 



' Dictionnaire des Sciences Naturelles, public- 

 par les Professeurs du Jardin du Roi, Paris et 

 Strasbourg, 1816-1829, 60 vols. 8vo. fig. 



^° Dictionnaire Classique d'Histoire naturelle. 

 etc., Paris, 1824-1830, 17 vols. 8vo. 



" Ersch (J. S.) und Gruber (J. G.), Allge- 

 meine Encyclopiidie der Wissenschaften, Leipzig, 

 1818 und folff. 4to. 



