15 Ectiin. 
Structure, Physiology, Development. 
STRUCTURE. 1007 
General. 
Antedon ; Chadwick, 39. 
Holothuroidea ; Fisher, 84. 
Holothuroidea, New Zealand spp. 
lihabdomolgus etc. ; Dendy & Hindle, 
68 . 
Holothuroidea, notes ; Ostergren, 178. 
Holothuroidea, esp. lihabdomolgus 
ruber ; Becher, 19. 
Thyone, correction to Drew’s account ; 
Edwards, 80. 
Synaptidae ; Clark, 52, p. 42. 
Molpadiidae ; Clark, 135, p. 135. 
Symmetry, Holothuroidea ; Becher, 
19, p. 071. 
Septum, Asteroidea; Meurer, 169. 
Mucus gland, Ampliiura, Antedon, 
Astropccten, Opliiothrix ; Sterzinger, 208. 
Skeletal System. 
Crinoidea, Metacrinus ; presence of 
infrabasalia, p. 20 ; Doderlein, 74. 
Cystoidea ; Stromer, 209. 
Pedicellariae, spp. Cidaridae ; Agassiz 
& Clark, 3. 
Spicule formation ; Woodland, 229. 
Spicules, Holothuroidea; Edwards, 78. 
Spicules, Synapta and ‘ Auricularia ’ 
larva ; Woodland, 230. 
Spicules, absent in lihabdomolgus ; 
Dendy & Hindle, 68. 
Sense Organs. 
Eyes, Asteroidea, esp. deep-sea spp. ; 
Meurer, 169. 
Eyes, deep-sea Asteroidea ; Meurer, 
170. 
Sensory papillae on podia, Ampliiura , 
Ophiotlirix ; Sterzinger, 208. 
Organs of Doubtful Homology. 
“ Ciliated funnels ” possibly parasites ; 
Dendy & Hindle, 68, p. 120. 
Epithelial (? glandular) organ on arm 
of Porcellanaster ; Meurer, 169, p. 25. 
1007, 1011, 1015 
PHYSIOLOGY. 1011 
General. 
Asterias forreri ; Jennings, 115. 
Holothuroidea ; Ostergren, 178. 
Synaptidae ; Clark, 52, p. 61. 
Molpadiidae ; Clark, 52, p. 152. 
lihabdomolgus ruber ; Becher, 19. 
Sensation. 
Bohn, 24, 25. 
Metabolism and Excretion. 
Nitro-metabolism, presence of urea ; 
Sanzo, 197. 
Glandular Secretions. 
Mucus glands, Ampliiura etc. ; Ster- 
zinger, 208. 
Environmental Effects. 
Astropccten. etc. ; Roule, 195. 
DEVELOPMENT. 1015 
General. 
MacBride, 156. 
Antedon ; Chadwick, 39. 
Ophiotlirix, etc. ; MacBride, 155. 
Opliiothrix’, MacBride, 156, 154. 
Synaptidae ; Clark, 52, p. 59. 
Boveri, 29. 
Oogenesis and Egg. 
Oogenesis, Asterias forbesi ; Jordan, 
120 . 
Eggs, Arbacia, Asterias ; density, 
effect of centrifugalizing ; Lyon, 153. 
Fertilization and Segmentation. 
Artificial parthenogenesis ; Loeb, 148. 
Artificial parthenogenesis, Paracen- 
trotus ; Delage, 62. 
Artificial parthenogenesis, through 
blood-serum of Gephyrea ; Loeb, 147, 
146. 
Artificial parthenogenesis through 
action of metals and metalloids, Asterias 
forbesi ; Matthews, 165. 
