LIST OF WOODCUTS. XIU 



PAGE 



Flo. 45. AstK.ca^ JhiviatiUs. The first and skcosi) maxilli- 



PEDES . . . . . . 166 



The second ambulatory leg . . 169 



The mandible and maxilla; . . 171 

 The eye-stalk, antennule, and 



antenna 172 



Blood coepuscles . . . . 176 



Epithelium 178 



Connective tissue . . . . 179 



musculap. tissue . . ' . . 181 



Muscular tissue . . . . 182 



Nerve ganglia .... 188 



Nerve fibres . . ... 189 



Cuticulak tissue .... 191 



Sections of embryos . . . . 208 



Eabliee stages of development 210 



Later stages of development . 216 



Newly hatched young . . . 220 

 Comparative views of the cara- 

 pace, third abdominal SOxMITE, 



and telson .... 233 

 Comparative views of the first 



AND second abdominal APPEN- 

 DAGES OF THE MALE . . . 245 



248 



64. Parastacus brasilicnsis ........ 250 



65. Astacoidcs madagasmrensis 251 



66. Diagram of the morphological relations of the 

 Astaddce 253 



67. Homarus ridgaris 258 



I Parastw:m. 



68. J Ncphrops. \ rouoBUANCHiiE 259 



( raliehion. 



