

INDEX. 



271 



Trachypora, 244. 



TriaSsic Corals, 245. 



Trichydra 82, 87, 89. 



Tritozooids, 74. 



Trochocyathus, 239. 



Trochophyllum, 245. 



Trochoseri.s, 247. 



Trockosmilia, 239. 



Tubipora, 209. 



Tubiporidcz, 159, 162, 209, 213, 237. 



Tubular ia, 31, 32, 44, 54, 83—9, 127. 



Tubularuidce *, 89. 



Tubular idee, 90. 



Tubular ina^ 90. 



Tubulosa, 159, 162, 204, 206, 237, 242, 



243. 

 Turbinaria, 241. 



Turbinoh'a. 247. 



Turbinolidce, 202, 207, 233, 234, 237, 



246, 247. 

 Turris, 62. 

 Turritopsis, 61. 



Type, of Hydrozoa, 20 ; of Actinozoa. 

 131. 



Ulocyathus, 22.1. 

 U lop hy Ilia m 239. 

 Umbellularia, 235. 



Umbrella, of Lucernaridce, 27, 37, 47, 



124* 

 Urticating organs, of Ccclenterata, 3. 



Vacuolation, of tissues, 8, 32. 

 Vegetative repetition, 73. 

 Veil, of nectocalyx, 36, 116. 

 Fete//a, form and structure of, 104; 



development of, 59 ; pneumatoevst 

 of 102, 105 ; tentacles of, 32, 111 ; 

 polyp.tes of, 105, no, 114 ; g0 no' 

 phores of 45. 112-3; glandular sacs 

 of, 106 ; distribution of, 127. 

 Velellida, 114, ' ' 



Veret ilium, 212. 

 Vesicles, of Medusidcz, 77. 

 Villi, of polypite, 31. 5/ 

 Vtrgularia, 212, 241. 



Vital endowments, of lower animals, 



10. ' 



Vitelline membrane, 15. 

 Vogtia 45, 99. 



Vorticlava, 82, 85—7, 89. 



Warts, of Sea-anemones, 140. 

 Willsia, canals of, 116. 



Yolk, 14. 



Yolk-division, i 5 , 5Ij I70# 



Yolk-sac, 15. 



Zaphrentis, 214, 238. 



Zoantharia, general characters of 

 I39» ify 19 6 ; polypes of, 131, 14/ 

 197; tentacles of, 148, 199; thread- 

 cells of 150; corailum of, 158-62, 

 I73> 186, 201—5; free-swimming 

 forms of, 163 ; families of, 201, 205I 

 development of, 170; distribution 



or, 232—6; relations of, to time, 237, 

 242. 3 " 



Zoanthidce, 162, 199, 201, 206. 

 Zoanthus, 160, 235. 

 Zooids, 74. 





THE END. 



