90 COMPAEATIVE ANATOMY. 



Fibrospongia3. 



Ceraspongise. 



Euspongia, Spongelia, Poterlum. 

 HalicliondriK. 



Axinella, Spongilla. 



Corticata. 



Thetya. 



Hyalospongiae. 



Euplectella. 



CalcispongifB. 



Ascon, Leucou, Sycon. 



II. Acalephse, 



1. Hydromedusfe. 



Hydriformes. 



Hydra ; — Cordylophora ; — Hy dractinia ; 

 — Coiyne, Syncoryne, Eudendi-ium ; — 

 Tubularia, Coiymorpha ; — Campann- 

 laria, Sertularia, Plumiilaria, 



Medusiformcs. 



Sarsia, Bougainvillea, Lizzia, Oceania ; 

 — Eaeope, Thaumantias ; — Tracliynema ; 

 — jEgina, Cunina; — Liriope, Geryonia, 

 jEquorea. 



Siphonophora. 



Velella, Porpita ;— Diphyes, Abyla ;— Athorybia, Agalma, Physophora, Physalia. 



2. Calycozoa. 



Lucemaria. 



3. TliecomedusEe. 



Stephanoseyphus. 



4. Medusae (Discopliora). 



Cliaiybdea, Pelagia, Avtrelia, Ehizostoma, Cassiopeia. 



5. Anthozoa. 



Tetractinia. 



Cereanthns, Cyathopliyllum. 

 Hexactinia. 



Antipathes, Fungia, Madi'epora, Astrtea, Oculina, CaryophylUa. 

 Octactinia (Alcyonaria). 



Alcyonivun, Pennatula, Virgularia, VeretUlum, Renilla, Gorgnnin, Isis, 



Corallium, Tnbipora. 



6. Ctenophora. 



Beroe, Cydippe, Cestum, Earhamphjea, Mnemia, Eucharis. 



Bibliography. 



Spongrise : Geant, E. E., Observ. on the struct, and fmict. of Sponges. Edinb. New PhU. 

 Journal, 1826-32. — Liebehkuhit, Beitr. z. Entw. der Spongillcn. Ai-ch. f. Anat. u. Physiol. 

 1856. Zur Anat. d. Spongilleu, ibid.— The same, Z. Anat. d. Spongien, ibid. 1857, 1859, 1863. 

 — ScHULTZE, M., Die Hyalonemen. Bonn, 1860. — Schmidt, O., Die Spongien des adriat. Meeres. 

 Leipzig, 1862. Supplcriient, lS6i. Zweites Sui^plement, 1867. Drittes Supplement, 1868.— Glaus, 

 XJeber Euplectella Aspergillum. Marb. n. Leipzig, 1868. — HARTiif g, P. , Sur le genre Poterium, 

 Natunrkuud. Verhandeluigen. P. II, St. 2. Utrecht, 1870. — Hackei., Die Kalkschwllmme, eine 

 Monographie. 3 Bde. Berlin, 1872. — The same : Die Physemarien. Jen. Zeitschr. Bd. X. — 

 ScHCLZE, F. E., Ueber Bau u. Entw. v. Sycandra raphanes. Zeitschr. f. w. Zool. Bd. XV. — The 

 same, Untersuch. liber d. Bau u. d. Entw. der Spongien (Halisarca), ibid. Bd. XXVni. 



Acalephffi : Catolini, Memorie per servire alia atoria dei polipi marini. Kapoli, 1735. (German 

 by Sprengel. Numberg, 1813.) — Eschscholtz, System der Acalephen. BerUn, 1829. — LESsoif, 

 Zoophytes acaUphes. Paris, 18i3. (Suits a Biiffon). — Saes, Fauna littoralis Norvegire 1. 1S4G. 



