| CONTENTS OF VOL. II. 
Order 11.—Intestine open at the mouth only. 
Tribe [. Stellerida, Asterias, Ophiura, Euryale, Co- 
matula, : : ‘ : . 609 
Tribe II. Crinoidea. Pentacrinus, : s 609 
Class I1.-—Acalepha. | 
Order I.—Base adhering. 1. Actinia, Zoanthus. 2. Lu- 
cernaria, ; ; . : 610 
Order II.—Base free. 
1. Tribe, without air-vessels. Velella, Porpita, Medusa, 
Beroe, Pleurobrachia. j ‘ : 611 
2. Tribe, with air-vessels. Physalia, Physsophora, Rhi- 
zophyza, Stephanomia, : : 612 
Class III. Zoophyta. 
Order [.—Carnosa. 
Tribe I. Aggregated free animals. Pennatula, Vere- 
tellum, Funiculina, Renilla, Virgularia, Umbellularia, . 613 
Tribe II. Aggregated animals fixed. Anthelia, Zenia, 
Amothea, Lobularia, Cornularia, Spongia, Ephydatia, . 614 
Tribe III. Antipathes, Corallium. : 614 
Tribe IV. Madrepora. . : 615 
: Order ITI. 
1. Tribe. Millepora, Retipora, Corallinade, Tubulipo- 
ra, Tubipora, Cellipora, Eschara, Flustra, Cellularia, 
Aleyonium, : : : - 615 
2. Tribe. Sertularia, Tubularia, Aleyonium, ‘ 616 
Order ITI. 
Coryna, Hydra, : ; ; ‘ 616 
Order IV. 
1. Brachionus, Furcalaria, &e. j 617 
2. Ratullus, Trichocerca. ; : 617 
