96 II. 2. Cölenteraten (Zoophyten). 
Fibrospongiae. 
Ceraspongi 
Euspongia, Spongelia, ‘Poterium. 
Halichondriae. 
Axinella, Spongilla, 
Corticata. 
Thetya. 
Hyalospongiae. 
Enplectella. 
Caleispongiae, 
Ascon, Leucon, Sycon. 
II. Acalephae. 
1. Hydromedusae. 
Hydriformes.  Medusiformes. 
Hydra; — dCordylophora; — | Sarsia, Bougainvillea, Lizzia, 
Hydractinia; — ‚Coryne, Syn- Oceania ; — Eucope, Thauman- 
coryne, Eudendrium ; — Tubu- | tias ; — Trachynema ; — Aegina, 
laria, Corymorpha ; — Campa- | Cunina ; — Liriope, Geryonia, 
nularia, Sertularia, Plumularia. | Aequorea. 
Siphonophora. 
Velella, Porpita; — Diphyes, Abyla; — Athorybia, Agalma, Physo- 
phora, Physalia. 
. Calycozoa. 
Lucernaria. 
3. Thecomedusae. 
Stephanoscyphus. 
4. Medusae (Discophora). 
Charybdea, Pelagia, Aurelia, Rhizostoma, Cassiopeia. 
5. Anthozoa. 
Tetractinia. 
Cereanthus, Cyathophyllum. 
Hexactinia. 
Antipathes, Fungia, Madrepora, Astraea, Oculina, Caryophyllia. 
Octactinia (Aleyonaria). . 
Aleyonium, Pennatula, Virgularia, Veretillum, Renilla, Gorgonia, Isis, 
Corallium. Tubipora. 
6. Gtenophora. 
Bero&, Cydippe, Cestum, Eurhamphaea, Mnemia, Eucharis. 
[>> 
x 
Literatur. 
Spongien: Grast, R.E., Observ. on the struct. and funct. of Sponges. Edinb. New. 
phil. Journal. 1826. 41832. — Lieserküns, Beitr. z. Entw. der Spongillen. Arch. 
f. Anat. u. Physiol. 4856. Zur Anat. d. Spongillen. ibid. — Derselbe, Z. Anat. 
d. Spongien. ibid. 1857. 4859. 1863. — ScHuLtzE, M., Die Hyalonemen, Bonn 
41860. — Scuaipt, O., Die Spongien des adriat. Meeres. Leipzig 1862. Supple- 
ment 4864. Zweites Supplement 41867. Drittes Supplement 4868. — Craus, Ueber 
Euplectella Aspergillum. Marb. u. Leipz. 4868. — Harrıns, P., Sur le genre 
Poterium, Natuurkund. Verhandelingen. P. Il. St. 2. Utrecht 4870. — HÄCKEL, 
Die Kalkschwämme, eine Monographie. 3 Bde. Berlin 1872. — Derselbe, Die 
