522 Stimpson on the Crustacea and Echinodermata 



produced and rounded ; its inner angle bearing the 15-artic- 

 ulate flagellum. Eye transversely oblong. Feet covered 

 with simple hairs. Those of the first and second pairs with 

 small subcheliform hands ; those of the third and fourth 

 pairs with the third and fourth articles dilated, the fifth 

 slender, the sixth very small. Feet of the posterior three 

 pairs very much widened ; those of the sixth pair largest. 

 Caudal stylets of the first and second pairs with short styli- 

 form rami, the inner ones being a little shorter than the 

 outer ones ; those of the third pair with long, flattened, 

 equal rami, the outer ones spinulose along their outer 

 edges, both fringed with long setse on the inner sides. 

 Terminal caudal spines of considerable length. 



The color is yellowish-white. Length, half an inch. 



It was dredged on a sandy bottom in ten fathoms, in the 

 channel near the entrance of San Francisco Bay. 



Mus. N. P. Exp. 



P^CILOPODA. 



AEGULUS PUGETTENSIS. Dana. 



Argulus Pugettensis, Dana; U. S. Exploring Expedition, Crust, ii. 151, 



PI. XCIV. f. 2. 



Several specimens of this species were taken from fishes 

 in Tomales Bay, by Mr. Samuels. 

 Mus. Expl. Exped. ; Smithsonian. 



ECHINODERMATA. 



The Echinoderms, as yet known from this coast, are few 

 in number. In fact, the character of the greater part of the 

 shores of California and Oregon is not such as affords the 

 most favorable conditions for the development of numerous 

 species of this order. Nearly the whole line of coast is 



