562 



COMPARATIVE ANATOMY 



Tracheal lungs, 530 



Tracheata, S87 



Trachelius, 9 



Trachomedusce, 69 



Travisia, 181 



Trebius caudatus, 2d anteniite, 310 



Treinatoda, 134 



Tricenophorus, 134 



Trichina spiralis, 179, 179 



TrichobranchiEe, 328 



TrichocepJialus dispar, 179 



Trichocyst, 13, 17 



Trichodactylus anonymus, sexual organs, 

 633 



Trichodectes, 440 



Trichodina, 11 



Tricfwplax adherens, 58, 60 



Trichoptera, 441 



Trichotraclielidm, 179 



Tridadidce, 133 ; intestinal and nervous 

 systems, 142 ; sexual organs, 156 



Trigonoporus, 133 



T'dlobita, 414, 415 ; restored trunk seg- 

 ment, 414 



Trinudeus, 415 



Tristomum, 134 



Trochosa singoriensis, 516 



Troctes, 440 



Trombidiidce, 510 



TromMdmvi fuliginosum, sexual oi^ans, 

 533 



Tuberella, 61 



Tuticinella, 292 



Tubijicidce, 181 



Tnhipora, 70 



Tuhitelaria, 510 



Tubularia larynx, 68 



Turbellaria, 133 ; pharyngeal apparatus, 

 139 ; excretory cell, 152 



Tylenchus scandens, 178 



Tympanal organ, 473 



Typhlosolis, 206 



TyroglypMdm, 510 



Urocerib^, 44^ 

 Vrochceta, 181 



Uropoda, 510 ; sexual organs, 534 

 Uropoda, 389 

 Urospora, 9 



,, Scenuridis, 9 

 Vrostyla, 9 

 Uterus bell, 257 



Vaotjolbs, contractile, 17 ; noncoutrac- 



tile, 14 

 Velarium, 92 

 Velella, 70, 114 

 Velum, 75, 90 

 Vermes, 177-286 

 Versuridw, 101 

 Vesiculata, 94 

 Vespidce, 44^ 

 Vibracularia, 267 

 Vitellaria, 26, 155 

 Volvox, 8 



,, globatur, 21 

 Vartex, 134 

 Vorticella, 11 



,, mierostmna, 10 

 Vorticeros, 134 



Waldseimia, 186 



,, flavescens, 196 



Water-vascular system, 136 



Xanteo, 300 



Xestoleberis aurantia, mandibles, 311 



Xiphosura, 417-421 



Xylophaga, 44^ 



Xylophagidce, 44^ 



Xysticus, 510 



YUNQIA, 133 



ZiLLA, 510 



Zocea larva, 298, 391, 392, 396 



Zoanthus, 71 



Zoophyta, 58-132 



Zona radiata, 28 



ZygcenidfB, 442 



Zygote, 20 



THE END 



Printed by R. & R. Clark, Edinburgh. 



