LIST OF SPECIES. 
Page 
IV, CENTRONIiE 1 
1. ECHINODERMATA... 1 
Class I. DITREMATA... 1 
Order I. ECHINIDA ... 2 
Earn. 1. CiDARiD.® 2 
1 . Cidaris 2 
1. papillata 2 
Earn. 2. Echinid^ 2 
1. Echinus 3 
1. Eleraingii ' 3 
2. esculentus 3 
3. miliaris 3 
4. lividus 4 
5. n. s 150 
2. Echinometra 4 
1. Drobachensis 4 
Earn. 3. Scutellid^... 4 
1. Echinarachnius 4 
1. placenta 5 
2. Echinocyamus 5. 
1. pusillus 5 
Earn. 4. Spatangid^... 5 
1. Spatangus 5 
1. purpureus 6 
2. Echinocardium 6 
1. cordatus 6, 150 
2. ovatum 6 
3. Brissiopsis 7 
1. lyrifera 7, 150 
Page 
Order II. HOLOTHURIDA. 7 
Earn. 1. Holothurid^... 7 
1. Thyone 7 
1. fusus 7 
2. Raphanus 8, 150 
2. Holothuria 8 
1. nigra 8 
Earn. 2 Cuvieriad^... 8 
1. Psolus 8 
1. phantopus 9, 150 
2. Psolinus 9 
1. brevis 9, 150 
Earn. 3. Pentactid^... 9 
1. Pentacta 9 
1. frondosa 9 
2. fusiformis 10 
3. Hyndmanni 10 
4. lactea 10 
5. pentactes 10 
6. Montagui. 11 
7. Neillii 11 
8. dissimilis 11 
2. Thyronidium 11 
1. pellucidum 11 
2. Drummondi 11 
Earn. 4. Synaptid^... 12 
1. Synapta 12 
1. inherens 12 
2. Henslowana 12 
