Pacific Shores of North America. 531 
of each plate of the lower marginal series. Color in life, 
brght red above, pale orange below. Diameter, four 
inches. 
Found in Puget Sound by Dr. Suckley, and by myself 
near San Francisco. * 
f EXPLANATION OF THE PLATES. 
PLATE XVIII. 
Cancer antennarius, d' of the natural size. 
PLATE XIX. 
Fig. 1. Side view of carapax of Loxo aa grandis, 2 4 nat. 
] 2. Porcellana rupicola, & m siz 
3. Randallia ornata, Q 
PLATE XX. 
‘1. Cryptolithodes typicus, 9 nat. size. 
2. The same from below. 
3. ; view from behind. 
E A side view. 
5. Inferior surface of the head magnified. 
6 Po hay of flagellum of external antennz, showing the clavate 
PLATE XXI. 
fe of this plate are all of the natural size. 
oa h jus turgidus. 
E HT d of Gebia Pugettensis, with the setze removed. 
