GENERAL INDEX. 



xix 



Circulation in Arenicola 

 Reproductive organs of the Dorsibranchiata 

 Multiplication by spontaneous division 

 Aphrodite aculeata ...... . -. -. 



TUBICOLA 



Anatomy of Terebella 



Branchial apparatus 



Cephalic tentacula ........... 



Circulatory system of Terebella nebulosa 



Generative apparatus of Terebella 



Embryology of the Annelidans 



Development and metamorphoses of Terebella 



Growth of Annelida by the successive formation of new segments 



Nervous system of Annelidans 



Structure of the eye of Torrea vitrea 



" Auditory capsule " of Arenicola 



Luminosity of marine Annelidans 



259 

 261 

 262 

 264 

 266 

 268 

 268 

 269 

 271 

 274 

 275 

 277 

 277 

 278 

 279 

 279 



Sec. 

 668 

 670 

 673 

 674 

 680 

 681 

 682 

 683 

 686 

 695 

 705 

 706 

 711 

 712 

 713 

 714 

 715 



CHAPTER XI. 



MYRIAPODA. 



MYUIAPODA General remarks on the 280 . 716 



JULJD.E 281 . 723 



Anatomy of Julus terrestris 281 . 723 



Male generative organs of Julus 282 . 727 



Female generative organs of Julus 283 . 728 



Ova, of Julus 283 . 729 



Development and growth of Julus terrestris Observations of Mr. 



Newport 284 . 732 



SCOLOPENDRID.E 287 . 739 



Anatomy of Scolopendra 287 . 740 



Mouth, structure of 288 . 742 



Alimentary canal 288 . 743 



Structure of the heart in the Scolopendridce 288 . 744 



Arterial system 289 . 746 



Generative organs of male Scolopendra 289 . 747 



female 290 . 748 



Phosphorescent and electrical phenomena exhibited by some species 290 . 749 



CHAPTER XII. 



INSECTA. 



INSECTA Definition of the class 290 . 750 



Metamorphosis of insects 290 . 752 



Larva 291 752 



Pupa and Imago 291 753 



Insecta Ametabola 291 754 



Distribution of insects into orders 291 755 



HEMIPTERA 292 757 



OKTIIOPTERA 292 758 



DICTYOPTERA 293 759 



NEUROPTERA 293 761 



DIPTERA 294 763 



LEPIDOPTERA 294 764 



HYMENOPTERA 295 766 



COLEOPTERA , 295 767 



External anatomy of perfect insect . . . ;" * v 225 769 



Structure of the legs of insects 298 778 



