Pacific Shores of North America. 91 



of each plate of the lower marginal series. Color in life, 

 bright red above, pale orange below. Diameter, four 

 inches. 



Found in Puget Sound by Dr. Suckley, and by myself 

 near San Francisco. 



EXPLANATION OF THE PLATES. 



PLATE XVIII. 

 Cancer antenna?' ius, £ of the natural size. 



PLATE XIX. 



Fig. 1. Side view of carapax of Loxorhynchus grandis, 9 i na t- 

 " 2. Porcellana rupicola, £ nat. size. 

 " 3. Randallia ornala, 9 " " 



PLATE XX. 



Fig. 1. Cryptolkhodes typicus, 9 n at. size. 

 " 2. The same from below. 

 "3. " view from behind. 



" 4. " side view. 



" 5. Inferior surface of the head magnified. 



" 6. Portion of flagellum of external antennro, showing the clavate 

 setae. 



PLATE XXI. 



The figures of this plate are all of the natural size. 

 Fig. 1. CTibanarius turgidus. 

 " 2. Hand of Gebia Pugettensis, with the setae removed. 



