Pacific Shores of North America. 81 



appendiculus 4-5 articulated. In the inferior antennae the 

 flagellum, of 11 oblong articles, is scarcely shorter than the 

 peduncle, the terminal and penult joints of which are of 

 equal length, and each four or five times as long as the 

 antepenult. The four hands are rather small, of nearly the 

 same size and shape, suboblong ; palm transverse, minutely 

 denticulated and setose, finger short, considerably curved. 

 Posterior caudal stylets with unequal rami ; the outer ones 

 large, nearly as long as the three posterior segments of the 

 abdomen ; inner ones very small and inconspicuous. Color, 

 dark brownish, rarely blackish. Length, 0.5 inch. 



This species differs from G. Atchensis in the smoothness 

 of the dorsal surface of the first three abdominal segments. 



Is found among confervas in salt marshes near San 

 Francisco ; and a few specimens were obtained from the 

 stomachs of salmon caught in Puget Sound. 



Mus. N. P. Exped. ; Smithsonian. 



IPHIMEDIA PUGETTENSIS. Dana. 



Iphimedia Pugettensis, Dana ; U. S. Exploring Expedition, Crust, ii. 932, 

 PI. LXIII. f. 6. 



Hab. Puget Sound, (Expl. Exped.) 

 Mus. Expl. Exped. 



phoxus grandis. Stimpson, n. s. 



This species is of a much larger size than is usual in the 

 genus. Body broad and robust. Rostrum lamelliform, 

 expanded over the bases of the superior antennae, with a 

 broadly rounded extremity. Superior antennae bi-flagel- 

 late, the inner flagella very little smaller than the outer 

 ones ; both 12-articulate ; penultimate article of peduncle 

 entirely concealed beneath the rostrum. Inferior antennae 

 a little longer than the superior ones ; terminal article of 

 peduncle broad at its extremity where its outer angle is 

 11 



