SUBJECT INDEX 



291 



Cliona celata, 35 



Clypeaster rosaceus, classification, 66; egg 



size, 66; chromosomes, 102 

 Coelenterata, 14 



Coelomic fluid, see Perivisceral fluid 

 Coelopleurus fioridanus, 60; classification, 



64; see Mortensen II, 612 

 Co-enzymes, 178 

 Coins, 26 

 Colchicine, cleavage figure fading out, 103; 



rhythms, 163, 219; viscosity, 225 

 Color and color change of A. punctulata, 



28, 29; of A. lixula, Centrostephanus 



and Diadema, 28, 29; ultraviolet, 28 

 Composition of eggs, see Compilation, 166- 



167 

 Cooking sea urchins, 11, 13, 22, 23, 24 

 Copper, in chromatophores, 160; in eggs, 



166; copper chloride, cleavage, 161, 163; 



exogastrulation, 190; viscosity, 225 

 Cortical granules, 85; Figs. 9, 10; 167-168 

 Cortical layer, see Compilation, 167-168; 



83; Figs. 9, 10 

 Corticotropin, ACTH, cleavage, 163 

 Cortisone, cleavage, 163 

 Cretaceous, 20 

 Crinoidea, 14 



Crushed eggs, see Homogenates; Table 7 

 Cyanides, see Compilation, 169-170; cleav- 

 age, 161, 163 

 Cystoid, 20 

 Cytochrome and cytochrome oxidase, see 



Compilation, 171; in sperm, 89 

 Cytolysis, see Compilation, 171-172 



"Decorate" with pebbles, etc., 43, 44; see 

 Storm forecast 



Dendrastcr excentricus, hermaphroditism, 

 51; classification, 66; egg size, 66; cleav- 

 age, 99; lithium, 190; see Compilation, 

 Other Species 



Density (specific gravity), see Compilation, 



172-173; 79 

 Derbes, 17 

 Description of sea urchin, historical, 8-16; 



modern, 27-34; Figs. 6, 7; Plate I 

 Desoxycorticosterone, cleavage, 163 

 Development, 95-117; Plates III, IV, V, VI; 



Tables 2-5 

 Devonian, 20 

 Diadema (Ceritrechirius), name, 16, 17; 



see footnote p. 17; color change, 29; 



all)ino, 30; reaction to light, 43; lunar 



periodicity, 55, 56; classification, 63; 



size of egg, 63 

 Dibenzanthrene, see Carcinogens 



Dimethylparaphenylenediamine, cleavage, 



163; respiration, 215 

 Distribution, 39, 40 

 Drosophila, chromosomes, 103 

 Dyes, see Vital dyes 



Easel, 17-18 



Eating, see Feeding habits 



Echinarachnius parma, use of shell, 25; 

 locomotion, 45; righting movement, 46; 

 description, 60; hyaline layer, 60; cen- 

 trifuging, 60, 127; size of egg, 60, 66; 

 classification, 66; papillae in oocyte, 73; 

 centriole, loi; chromosomes, 102; many 

 references in Compilation, mostly under 

 Other Species after each topic 



Echinidae, classification, 62, 64 



Echinocardium {Ainphidetus) cordatum, 

 metamorphosis, 18, 36, 117; sand bur- 

 rowing, 39; hermaphrodite, 51; classifica- 

 tion, 67; size and shape of egg, 67, 78; 

 sperm, 89; many references in Compila- 

 tion, mostly under Other Species after 

 each topic 



Echinocardium mediterraneum, sex di- 

 morphism, 48; classification, 67; egg size, 

 67 



Echinochrome, see Compilation, 173-175; 

 see also Chromatophores, Pigment 

 granules; motility of sperm, 91; in 

 pluteus, 111; in late eggs, 149 



Echinocidaris, 6, 18, 21, 63 



Echinocyamus pusillus, metamorphosis, 

 18, 117; sex dimorphism, 48; classifica- 

 tion, 66; size of e^, 66; see Compilation, 

 Other Species 



Echinodermata, echinodermes, 14, 16; ori- 

 gin of term, 14 



Echinoidea, name, 3; classification, 14-16, 

 62-67; fossil, 20; Challenger expedition, 

 viviparous, 52; Woods Hole, 59-60; num- 

 ber of species, 62; chromosome numbers, 

 102 



Echinometra, old term, 8; gonads, 31; 

 "reef urchin," rock-boring, 38, 39; clas- 

 sification, 66; egg size, 66; cleavage, 99; 

 see Compilation, Other Species 



Echinus, name, 3, 6; historical, 9-16; geo- 

 graphical names, 1 1 ; architecture, 26 



Echinus acutus, mature, 36; classification, 

 64; egg size, 64; hybrids in nature, 184 



Echinus esculentus, number of plates, 

 pores, etc., i6, 31; embryology, 17; use 

 of shell, 25; mature, 36; growth, 37; 

 duration of life, 37; disappearance, 42; 

 migrations, 43; locomotion, 45, 46; right- 

 ing reaction, 46; sex dimorphism, 48; 

 hermaphrodite, 51; classification, 64; size 



