PLATE 20 



Tig. 1. Cryptolithodes typicus, male; ventral view, X 1%. Unalaska, Alaska. 

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Fig. 2. Same specimen as fig. 1; dorsal view. 



Fig. 3. Cryptolithodes sitchensis, male; ventral view, X 1%. Tunitas Glen. 

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Fig. 4. Same specimen as fig. 3; dorsal view. 



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