INDEX. 



505 



Thalassicolla, 42. 

 Thalassophysa, 42. 

 Thalessa, 478. 

 Thaumatocrinus, 158. 

 Thecidium, 272-274. 

 Thecla, 470. 

 Theopilium, 42. 

 T/irips, 418, 419. 

 Thyridopteryx, 457. 

 Thysanozoon, 319. 

 Tibicen, 424. 

 Tiedemannia, 241. 

 Tima, 104, 105. 

 Tinea, 460. 

 Tipula, 488. 

 Tornatella, 232. 

 Tortrix, 460. 

 Toxaster, 188. 

 Tragos, 77. 

 Tremex, 476, 478. 

 Trevelyana, 236. 

 Triarthrus, 362, 363. 

 Tricoelocrinus, 151. 

 Tricoma, 311. 

 Tridacna, 213. 

 Trigonocrinus, 158. 

 Trimerella, 267, 269. 

 Tripodisciuin, 41. 

 Trochammina, 30. 

 Trochus, 225. 

 Tropidoleptus, 281. 

 Tryblidium, 214, 215. 

 Tuba, 84. 

 Tubicinella, 333. 

 Tubipora, 118, 119. 

 Tubularia, 101. 



Turbinolia, 136. 

 Turbo, 222. 

 Turritella, 224. 

 Turritopsis, 97, 100, 104. 

 Tyroglyphus, 374, 375. 



Ultimus, 228. 

 Unio, 209. 

 Urocentrum, 22. 



Vanessa, 474. 

 Velella, 109. 

 Ventriculites, 75. 

 Vemis, 212. 

 Veretillum, 125. 

 Vermetus, 224. 

 Vermicularia, 224. 

 Verongia, 86. 

 Vespa, 481. 

 Virgularia, 120. 

 Vivipara, 231. 

 Volvox, 60-62, 66. 

 Vorticella, 23, 57-59, 61. 



Xenoneura, 396. 

 Xiphigorgia, 125. 

 Xiphosphoera, 41. 



Yungia, 319. 



Zaitha, 419, 421. 

 Zaphrentis, 135. 

 Zoanthus, 127. 

 Zoothamnium, 59. 

 Zoroaster, 164, 165. 

 Zygospira, 284, 285. 



