LIST OF WOODCUTS. 



XIU 



Fig. 45. 



„ 61. 



„ 62. 



„ 63. 



„ 64. 



„ 65. 



„ 66. 



„ 67. 



„ 68. 



Astacus Jluviatilis. The first and sfx'ond maxilli 



PEDES 



,, ,, The second ambulatory leg . 



,, ,, The mandible and maxilla 



,, ,, The eye-stalk, antennule, ani 



ANTENNA .... 



,, ,, Blood coepuscles 



,, ,, Epithelium .... 



,, ,, Connective tissue 



,, ,, Muscular tissue . 



,, ,, Muscular tissue 



,, „ Nerve ganglia 



,, „ Nerve fibres .... 



,, ,, Cuticular tissue . 



,, ,, Sections of embryos . 



,, ,, Earlier stages of development 



,, ,, Later stages of development 



,, ,, Newly hatched young 



Comparative views of the cara 



PACE, third abdominal SOMITE 



and telson 

 Comparative views of the first 



AND second abdominal APPEN 



dages of the male 



torrentium. ^ 



nohilis. 



nigrescens. 



torrentium '^ 



nohilis. 



nigrescens. 

 Camharus ClarJcii 

 Parastacus Irasilicnsis . 

 A stacoidcs madagascaren sis 

 Diagram of the morphological relations of the 



Astacidce 

 Homaras vulgaris 

 ( Parastacics. 



PoDOBEANCHIiE 



Ncphroiis. 

 Palitmon. 



PAGE 



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233 



245 

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253 

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259 



