XXXVill INDEX. 
FOURTH GREAT DIVISION OF THE ANIMAL KINGDOM. 
ANU ATE LA Ray ALTA. 
Distribution of the Radiata into five Classes, 389. 
CLASSES. 
I. EcnINODERMATA. | III. AcaLepna. 
II. Enrozoa. | CEM: ‘Poryr. 
V. InFusoria. 
CLASS I.—ECHINODERMATA. 
Orvrr I.—PEDICELLATA, 390 
Asterias, 391 
Asterias proper, 391 
Ophiura, 392 
Euryales (Gorgonocephala, Leach), 393 
Comatula(Alecto, Leach), 393 
Encrinus, 393 
Apiocrinites, 394 
Encrinites, 394 
Pentacrinus, 394 
Platycrinites, 394 
Poteriocrinites, 394 
Cyathocrinites, 394 
Actinocrinites, 394 
Rhodocrinites, 394 
Eugeniacrinites, 394 
Echinus, 394 
KEchinus proper, 395 , 
Echinoneus, 396 
Nucleolites, 396 
Galerites, 397 
Scutella, 397 
Rotula, 397 
Cassidulus, 397 
Anachites, 398 
Clypeaster, 398 
Fibularia, 398 
Spatangus, 398 
Brissoides, 398 
Brissus, 399 
Holothuria, 399 
OrveEr II].—APODA, 401 
Molpadia, 401 
Minyas, 401 
Priapulus, 401 
