LIST OF WOODCUTS. 



xni 



FIG. 45. Astacus fluviatilis. THE FIRST AND SECOND MAXILLI- 



PEDES . . . . . . 



THE SECOND AMBULATORY LEG . 

 THE MANDIBLE AND MAXILUB . . 

 THE EYE-STALK, ANTENNULE, AND 



ANTENNA 



BLOOD CORPUSCLES 



46. 

 47. 



48. 



49. 

 50. 

 51. 

 52. 

 53. 

 54. 

 55. 

 56. 

 57. 

 58. 

 59. 

 60. 



61. 



62. 



63. 

 64. 

 65. 

 66. 



67. 

 68. 



PACK 



166 

 169 

 171 



172 



176 



EPITHELIUM 178 



CONNECTIVE TISSUE . . . . 179 

 MUSCULAR TISSUE . . . .181 

 MUSCULAR TISSUE . ... 182 

 NERVF GANGLIA . . . .188 



NERVE FIBRES 189 



CUTICULAR TISSUE . . . .191 

 SECTIONS OF EMBRYOS . ... 208 

 EARLIER STAGES OF DEVELOPMENT 210 

 LATER STAGES OF DEVELOPMENT . 216 

 NEWLY HATCHED YOUNG . . . 220 



(torrentium. \ COMPARATIVE VIEWS OF THE CARA- 

 nobilis. L PACE, THIRD ABDOMINAL SOMITE, 

 nigrescens. } AND TELSON . . . .233 

 ftorrentium. \ COMPARATIVE VIEWS OF THE FIRST 

 nobilis. [ AND SECOND ABDOMINAL APPEN- 

 nigrescens. } DAGES OF THE MALE . . . 245 



Cambarus Clarkii 248 



Parastacus brasiliensis . . . . . . ..250 



Astacoides madagascarensis 251 



DIAGRAM OF THE MORPHOLOGICAL RELATIONS OF THE 



AstacidoR 253 



Hom.arus vulgaris ........ 258 



I Parastacus. \ 



\Nephrops. t PoDOBRANCHLS 259 



1 Palcemon. J 



