Chap. I. 



HISTORY OF THE ACALEPHS. 



27 



on Velella; Pliilippi ^ on Phynopliora ; Ecker and Leydig on Hydra ;^ Allman on 

 Cordylophora ; ^ Quatrefages on Physalia;^ Hnxley's Anatomy and Affinities of the 

 Meduste;^ my own contributions to the natural history of the Acalephs of North 

 America;" and tlie works and papers of Will," 8ars,^ Forbes,^ Leuckart/" Vogt," 

 Kolliker,^^ Gegenbauer,^'^ and Schultze." The papers relating more especially to the 

 embryology of the Acalephs will l^e enumerated in the next section. General 

 accounts of the structure of the Acalephs may Ije found in most text-liooks on 

 Comparative Anatomy, especially in the more recent ones.^'"^ 



1 PiiiLTPPi (R. A.), Ueber den Bau der Phy- 

 foplioren und eine iiciie Art dcrselljen ; Miiller's 

 Arch. 1843, p. 58, fig. 



- Ecker (Al.), Zur Lehre vom Ban und Leben 

 der kontractilen Substanz der niedersteii Thiere, 

 Basel, 18-18, 4to. fig. — Leydig (F.), Einige Bemer- 

 kungen iiber den Bau der Ilydren, Midler's Arch. 

 1854, p. 270. 



'^ Allman (G. .J.), On the Anatomy and Physi- 

 ology of Cordylopliora, Phil. Trans. Koy. Soc. 1853, 

 vol. 143, p, 3G7. 



* Quatrefages (A. de), Memoire sur I'organi- 

 sation des Physales, Ann. So. Nat. 4c ser. 1854, 

 vol. 2. 



5 Huxley (Tu. H.), On the Anatomy and Atfini- 

 ties of the Family of the MedusM, Phil. Trans. Roy. 

 Soc. 1849, 1). 413. — On the Anatomy of Physalia, 

 Proc. Linn. Soc. 1848. — Observations upon the 

 Anatomy of the Diphydre, and the Unity of Organi- 

 zation of the Diphyda; and Physophorida>, Proc. 

 Linn. Soc. 1849. — Report on the Structure of the 

 Acalephs; Brit. Assoc, for Adv. Sc. 1851. — Ueber 

 die Sexual Organe der Diphyden und Physophoriden ; 

 Miiller's Arch. 1851. — The Oceanic Ilydrozoa ; a 

 Description of the Calycophoridai and Physophoridaj 

 observed during the Voyage of IL M. S. Rattle- 

 snake ; Ray Society, London, 1859, foL fig. 



^ Agassiz (L.), Contributions to the Natural 

 History of the Acalephaj of North America, Parts 

 I. and n. ; Amer. Acad. Arts and Sc. vol. IV. 

 1850. 



' "Will (.J. G. Fr.), Hora; tergestin» oder 

 Beschreibung und Anatomic der Akalephen, Leip- 

 zig, 1844, 4to. fig. 



' vSars (M.), Fauna littoralis Norvegiw, Christi- 

 ania, 184G and 1850, fol. fig. 



^ Forbes (Edw.), Monograph of the British 

 Naked-eyed Medusaj; Ray Society, London, 1847, 

 fol. fig. 



i» Leuckart (R.), Ueber den Bau der Phy- 

 salien und Siphonophoren, Zeitsch. f. wiss. Zool. 

 1851, vol. 3. — Zoologische Untersuchungen, 1853, 

 4to. fig. — Zur nahern Kenntniss der Siphonophoren 

 von Nizza, Arch. Naturg. 1854, L p. 249. — Also 

 Frey und Leuckart, Beitriige zur Kenntniss wir- 

 belloser Thiere, Braunschweig, 1847, 4to. fig. 



" VoGT (C), Ueber die Siphonophoren, Zeitsch. 

 f wiss. Zool. 1852, vol. 3, p. 522. — Untersuchungen 

 iiber Thierstaaten, Frankfurt, 1851, 8vo. fig. — 

 Recherches sur les animaux inferieurs de la Medi- 

 terrannec ; Premier Memoire, sur les Siphonophores 

 de la mer de Nice, Geneve, 1854, 4to. fig. 



^- KiJLLiKER (A.), Die Sehwimmpolypen oder 

 Siphonophoren von Messina, Leipzig, 1853, fok fig. 



^^ Gegenbauer (C), Beitriige zur nahern Kennt- 

 niss der Sehwimmpolypen (Siphonophoren) Zeitsch. 

 f. wiss. Zool. 1854, vol. 5, p. 285, and p. 442. 

 Bemerkungen iiber die Randkiirper der Medusen, 

 Miiller's Arch. 185G, p. 230. — Studien iiber Organi- 

 sation und Systematik der Ctenophoren, Arch. 

 Naturg. 185C, L p. 163. — Versuch eines Systems 

 der Medusen, mit Beschreibung neuer oder wenig 

 gekannter Formen ; Zeitsch. f. wiss. Zool. 1857, 

 vol. 8, p. 202. 



^^ Schultze (Max.), Ueber den Bau der Gallert- 

 scheibe bei den Medusen, Miiller's Arch. 185G, 

 p. 311. 



'5 See notes to pages 20 and 27 of the first 



