90 COMPARATIVE ANATOMY. 



Fibrospongia). 



Ceraspongia 3 . 



Euspongia, Spongelia, Poterium. 

 Ilalichondria?. 



Axinella, Spongilla. 



Corticata. 



Thetya. 



Hyalc-spongiae. 



Euplectella . 



Calcispongios. 



Ascon, Leucon, Svcon. 



II. Acalephae. 



1. Hydromedusns. 



Hydrif ormes. 



Hydra ; — Cordylophora ; — Hydractiiiia ; 

 — Coryne, Syncoryne, Eudendrium ; — 

 Tubularia, Corymorpha ; — Campanu- 

 laria, Sertularia, Plumularia. 



Medusif ormes. 



Sarsia, Bougainvillea, Lizzia, Oceania ; 

 ■ — E ucope, Thaumnntias ; — Trachynema ; 

 — iEgina, Cunina ;— Liriope, Geryonia, 

 .aSquorea. 



Siphonophora. 



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



2. Calycozoa. 



Lucemaria. 



3. Thecomedusas. 



Stephanoscyphus. 



4. Medusas (Discophora). 



Charybdea, Pelagia, Aurelin, Ehizostoma, Cassiopeia. 



5. Anthozoa. 



Tetractinia. 



Cereanthus, Cyathophyllum. 

 Hexactinia. 



Antipathes, Fungia, Madrepora, Astiwa, Oculina, Caryophyllia. 

 Octactinia (Alcyonaria). 



Alcyomuin, Pennatula, Yirgularia, Veretillum, Renilla, Gorgonia, Isis, 



Corallium, Tnbipora. 



C. Ctenophora. 



Beroe, Cydippe, Cestum, Eurhamphsea, Mnemia, Eucharis. 



Bibliography. 



Spongise : Grant, B. E., Observ. on the struct, and funct. of Sponges. Edinb. New Phil. 

 Journal, 182C-32. — Lieberkuhn, Beitr. z. Entw. der Spongillen. Arch. f. Anat. u. Physiol. 

 1856. Zur Anat. d. Spongillen, 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. Supplement, 1861. Zweites Supplement, 1867. Drittes Supplement, 1868.— Glaus, 

 Ueber Euplectella Aspergillum. Marb. u. Leipzig, 1868. — Harting, P., Sur le genre Poterium, 

 Natuurkund. Verhandelingen. P. II. St. 2. Utrecht, 1870. — Hackel, Die Kalkschwiimme, eine 

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

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

 same, Untersuch. iiber d. Bau u. d. Entw. der Spongien (Halisarca), ibid. Bd. XXVIII. 



Acalephse : Cavot.ini, Memorie per servire alia storia dei polipi marini. Napoli, 1755. (German 

 by Sprengel. Niirnberg, 1813.) — Eschscholtz, System der Acalephcn. Berlin, 1829. — Lesson, 

 Zoophytes acalephos. Paris, 1843. (Suite a Buffon).— Sars, Fauna littoralis Norvegia) I. 1816. 



