ROOM III.] NATURAL HISTORY. 65 
The following List will show at one view the Arrange¬ 
ment of the Radiated Animals, and the Numbers indicate 
the Table Cases of this Room in which the genera in the 
collection are placed. 
Sub-kingdom. 
Centronix. 
Section I. 
Echinodermata. 
Class I. 
l)lT RE MAT A. 
Order I. Echinida. 
Fam. 1. Cidaridce . 
Cidaris, Case 1 
Acrocidaris 
Pedina 
Tetragramma 
Acrosalenia 
Echinopsis 
Hemicidaris 
Diadema—1 
Astropyga 
Fam. 2. Echinidce. 
GyphoSoma 
Salentia—2 
Peltastes 
Goniopygus 
Goniophorus 
Acropeltis 
Arbacia—2 
Echinus—2, 3, 4 
Hipponoe—4 
Echinometra— 5 
Colobocentrus—6 
Heterocentrus—6 
Fam. 3. Scutellidce . 
Echinanthus— 7 
Lagana— 7 
Echinocvamus— 7 
Fibularia— 7 
Echinarachnius—8 
Eehinodiscus—8 
Encope 
Amphiope 
Heliophora 
Lobophora 
Fam. 4. Galeritidce, 
Echinolampas—9 
Conoclypeus 
Pygurus 
Cassidulus 
Amblypygus 
Clypeus 
Nucleolites 
Echinobrissus—9 
Catopygus 
Pygorhynchus 
Hyboclypeus 
Galerites—9 
Pyrina 
Globator 
Nucleopygus 
Pygastef 
Discoidea 
Holaster 
Disaster 
Fam. 5. Spatangidce. 
Hemipneustes 
Micraster—9 
Brissus —9 
Brissopsis 
Ova—10 
Toxaster 
Amphidetus—10 
Spatangus—10 
Echinocardium—10 
Echinoneus—10 
Pachygaster 
Echinocorys—10 
Order II. Holothu- 
rida. 
Fam. 1. Holothurid'je . 
Holothuria 
Trepang 
Mulleria 
Bohadschia 
Fam. 2. Cuvieriadcz. 
Cuvieria—10 
Psolus 
Fam. 3. Synaptidce . 
Synaptes 
Chirodota 
Thyone 
Fam. 4. Pentactidce, 
Pentacta 
Fam. 5. Siphunculidce. 
Sipbunculus—10 
Class II. 
Hypostomata. 
Ord. I. Asteroida. 
Fam. 1. Asteriadce. 
Asterias—11, 12 
Heliaster—12 
Tonia—12 
Fam. 2. Astropectinidce . 
Nauricia—13 
Astropecten—13, 14 
Luidia—14 
Petalaster—14 
Solaster—14 
Polyas ter—14 
Henricia— 14 
Fam. 3. Pentaceridcs. 
Culcita 
Pentaceros—15 
Stellaster—16 
Hippoaster—16 
Calleaster—] 6 
Goniaster—16 
Echinaster—19 
Gymnasteria—17 
Dactylosaster—17 
Stellonia—17 
Cribrella—17 
Linckia—17 
Fam. 4. Asterinidce. 
Palmipes—18 
Asterina—18 
Ord. II. Ophiurida. 
Fam. 1. Ophiuridce. 
Ophiosoma—19, 20 
Ophiura—20 
Rosula—20 
