PLATE 20 
Fig. 1. Cryptolithodes typicus, male; ventral view, X 14%. Unalaska, Alaska. 
(Page 154.) 
Fig. 2. Same specimen as fig. 1; dorsal view. 
Fig. 3. Cryptolithodes sitchensis, male; ventral view, X 114. Tunitas Glen. 
(Page 155.) 
Fig. 4. Same specimen as fig. 3; dorsal view. 
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