LIST OF ILLUSTRATIONS 



a longitudinal cut 

 autotomy 



III. 



112. 



113- 

 114. 

 115. 

 116. 



117. 

 118. 



119. 



120. 

 121. 

 122. 

 123. 

 124. 

 125. 



FIGURE 



96. A Planarian cut transversely into nine i^ieces 



97. A Planarian which has been divided into two bj 



98. The leg of a Crab, adapted for self-mutilation or 



99. Regeneration of the lens in a Newt's eye . 

 100. Regeneration of Planarian s 

 loi. A Starfish arm ...... 



102. Brush and comb on the leg of a Bee . 



103. Claw on the leg of a ' Beach-fly ' 



104. Digging leg of the Mole-cricket . 



105. Ovary of a fertile Queen-Ant and ovaries of a Worker 



106. Three Workers of the same species of Indian Ant 



loy A, B. Larva of a Caddis-fly 



107 C. Leptocephalus stage of an American Eel 



108. Nauplius larva of one of the lower Crustaceans . 



109 A, B. Metamorphosis of one of the higher Crustacea, a Shrimp 



109 C. Second Zoeea stage 



109 Z), E. Mysis-stage and fully-formed Shrimp 



no. The largest of the Daphnids {Leptodoni hi/alina), with summer ova 



beneath the shell 



Nauplius larva from the winter egg of Leptodora liijcdhia . 

 Development of the parasitic Crustacean Saccullna carcini 

 The two sexes of the parasitic Crustacean CJiondracanflius gihhosus 



Zosea-larva of a Crab 



Caterpillar of the Humming-bird Y{i^^Yk.-\i\Qih MacrogJossa steUatarurn 

 Development of the eye-spots in the caterpillar of the Elephant 



Hawk-moth CJicerocampa elpenor .... 

 Caterpillar of the Bed-straw Hawk-moth Denepliila gcdii 

 Two stages in the life-history of the Spurge Hawk-moth DeilepJiila 



euphorhicB ........ 



Caterpillar of the Poplar Hawk-moth Smerintluis popidl 

 A, Symmetrical, and B, asymmetrical curve of frequency 

 Life-cycle of Coccidium JitJiohil ..... 



Conjugation of a Coccidium (Adelea orafa) 

 Conjugation oi Coccidiuui 2yi'02))'ii(m .... 



Alternation of generations in a Gall-wasp . 

 The two kinds of galls formed by the species 



126. Ovipositor and ovum of the two generations of the same species 



of Gall-wasp ......... 



127. Life-cjcle of the Yine-])e&t {PJigUoxet'a vastafrix) 



128. Heterostylism ......••• 



129. Aberration oi Arctia caja, produced by low temperature . 



130. Skeleton of a Greenland Whale, with the contour of the bod} 



131. -Peridinese : ^^ecie^ oi Ceratmm 



PAGE 



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17 



21 



2.5 



27 



84 



85 



86 



91 



97 



10.5 



1.38 



161 



162 



168 



164 



166 

 167 

 168, 242 

 170 

 171 

 178 



180 

 181 



182 

 184 

 207 

 214 

 216 

 218 

 245 

 246 



247 

 249 

 254 

 276 

 313 

 325 



