GENERAL INDEX. 



Page Sec. 



Male organs of the BRACHYURA 412 1057 



Female organs of Astacus fluviatilis 413 1060 



Spermatheca 413 1061 



Ova carried about by the female 413 1062 



Metamorphoses of the Crab 413 1063 



BRANCIIIOPODA 415 1067 



Daphnia 415 1067 



Squitta 416 1068 



Reproductive system of the ENTOMOSTRACA 416 1069 



" Womb-legs " of Apus 417 1070 



Dorsal cavity of Daphnia 417 1071 



Impregnation of several generations by a single coitus .... 417 1072 



Ephippial eggs 418 1074 



Development of embryo 419 1077 



Cyclops 419 1078 



Artemia 421 1079 



EPISSOA 421 1080 



General history of the Epizoa 421 1081 



Lerneans 422 1082 



Achtheres percarum 423 1085 



Rudimentary articulated appendages 423 1088 



Alimentary system of Achtheres 424 1091 



Muscular system . . 425 1094 



Nervous system 425 1095 



Generative system (female) 425 1096 



Internal ovaria 426 1097 



Egg-sacs 426 1097 



Metamorphoses of embryo 426 1098 



Lamproglena pulchella 426 1100 



Muscular system , 427 1101 



Alimentary apparatus 427 1102 



Senses 427 1103 



Reproductive organs 427 1104 



Nicothoe Astaci 427 1105 



Alimentary system 428 1106 



Phlebenterism 428 1107 



Diminutive size of male 429 1108 



Gemmiparous reproduction 429 1108 



Female generative apparatus 429 1109 



Metamorphoses of embryo 429 1110 



PYCNOGONID.E 430 1111 



Remarkable disposition of alimentary canal 430 1112 



Nervous system 431 1116 



CHAPTER XV. 

 ROTIFERA. 



ROTIPERA General characters of the class 432 . 1117 



Stephanoceros Eichhornii 432 . 1119 



Tegumentary cell of Brachionus 433 . 1120 



Caudal appendage 433 . 1121 



Arrangement of cilia 433 . 1122 



Nature of ciliary action 434 . 1123 



Cause of apparent rotatory movement 434 . 1124 



Observations of Dr. Arthur Farre 434 . 1124 



M. Dujardin's explanation 435 . 1126 



Uses of ciliary apparatus 436 . 1127 



Mechanism whereby the " wheels " are protruded and retracted . 436 . 1128 



Arrangement of digestive system 437 . 1130 



Alimentary canal of Stephanoceros 437 . 1131 



Brachionus . 437 . 1132 



