Amphiura? Pl. III... : 5 
Amphiura squamata, Pl. 111. 
Antedon Larva, Pl. I1. 
Arbacia punctulata, Pl. IX. 
Arbacia pustulosa, Pl. IX. 
Asteracanthion berylinus, Pl. VII. 
Asteracanthion flaccida, Pl. VI. 
Asteracanthion pallidus, P\s. VII., VIII. 
Asteracanthion violaceus, Pl. VI. 
Asterias glacialis, Pl. YU 
Asterina gibbosa, Pls. V., VI. 
Asteroidea, pees of, Pls. V. -VIIL. 
Asthenosoma hystrix, Pl. XII. 
Auricularia with calcareous wheels, Pl. XIII. 
Auricularia with calcareous gland, Pl. XIII. . 
Auricularia with eleven spheres, Pl. XIII. 
Auricularia with clastic spheres, Pl. XIII. 
Auricularia with dendritic anal gland, Pl. XIII. 
Bipinnaria asterigera, Pl. VIII. 
Brissopsis lyrifera, Pl. XII. 
Crinoidea, Development of, Pls. I., II. 
Comatula, Pls. 1., II., 
Comatula rosacea, Pls. I., II. 
Comatula mediterranea, Pl. 1. 
Conolampas Sigsbet, Pl. XII. . 
Cucumaria doliolum, Pl. XV. 
Diadema setosum, Pl. XII. 
Dorocidaris papillata, Pl. XII. 
Echinarachnius parma, Pls. X1., XII. 
Echinaster sanguinolentus, Pl. V1. 
Echinaster Sarsii, Pl. V1. 
Echinaster sepositus, Pl. V. 
Echinoidea, Young Stages of, Pl. XII. 
Echinocardium cordatum, Pl. 1X. 
Echinocyamus pusillus, Pl. XT. 
Echinoderm Larvae, Homologies of 
. 
35, 
Echinoidea, Development of, Pls. [X.—XII. 
Echinoid Pluteus, Pl. XI. 
Echinus acutus, Pl. XI. . fi 5 
Echinus brevispinosus, Pl. X1. 
Echinus Vividus, Pl. X1. 
Echinus miliaris, Pl. 1X. ; 
Encope emarginata, Pl. XII. 
Goniocidaris canaliculata, Pl. X11. _ 
Hemiaster cavernosus, Pl. XII. . 0 
Holothuria tremula, Pl. XIV. 
Holothuria tubulosa, Pl. XIV. 
Holothuroidea, Development of, Pls. XIII. -XY. 
Homologies of Echinoderm Larve, Pl. XV. 
Mellita longifissa, Pl. XII. 
Mellita sexforis, Pl. XII. . A 
Mellita testudinata, Pl. X11. . 5 
Ophiocoma rosula, Pl. Ill. . 
Ophiopholis? Pl. II. . . . 
Ophiopholis bellis ° 
Ophiothrix fragilis, Pl. Iv. 
Ophiothrix versicolor, Pl. IV. 
Ophiuroidea, Development of, Pls. III., Iv. 
Pluteus bimaculatus, Pl.IV. . 
Pteraster militaris, Pl. VI. 5 0 
Spatangoid Pluteus, Pl. XI. 
Spatangus purpureus, Pls. X1., XII. « 
Strongylocentrotus Drébachicnsis, Pl. X. 
Strongylocentrotus lividus, P\. IX. 
Synapta, Pl, XIII. 
Viviparous Ophiurans, P\. 111. 
Wurmformige Asterie, Pl. VI. 
Young Stages of Echinoidea, Pl. XII. . 
