50 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



The genus Bamalichthys is distiuguislied from Ditrema by the ex- 

 traordinary development of the pharyngeal bones. 



115. Ditrema furcatum (Grcl.) Gthr. 



San Diego to San Francisco ; exceedingly abundant everywhere. Not 

 noticed northward. It lives in sheltered bays and is taken with seines. 

 It rarely reaches a pound weight, and is little esteemed. 



116. Ditrema atripes J & G. 



Monterey Bay ; abundant at Monterey, where large numbers are 

 taken in seines. It reaches the weight of 1^ pounds. 



117. Ditrema laterale (Agassiz) Gthr. — Perch; Surf-fish ; Blue Perch 



Santa Barbara to Puget Sound ; very abundant. Korthward the most 

 common of the larger species. It reaches a weight of 2 i^ounds, and is 

 an important market fish, although poor and watery. 



118. Ditrema jacksoni (Agassiz) Gthr. — Perch; Croaker; Surf-fish. 



San Diego to Puget Sound; scarce north of San Francisco, but ex- 

 tremely abundant south of Point Concepcion, and brought in large num- 

 bers to the markets. It reaches a weight of 1^ pounds, and is about as 

 poor as the rest of the tribe. 



119v Hypsurus caryi (L. Agassiz) A. Agassiz. — Bugara. 



Tomales to Santa Barbara ; generally very abundant in the edge of 

 the kelp, especially at Monterey. It is often taken with hook and line or 

 baited dip-nets, and sometimes in great numbers in seines. It is used 

 chiefly for bait for rock cod, the larger ones being sent to the markets. 

 It rarely weighs more than half a pound. In color it is one of the most 

 brilliant and attractive. 



120. Amphistichus argenteus Agassiz. — Surf -fish; White Perch, 



Tomales to San Diego; locally very common on sandy shores, espe- 

 cially in the surf; more abundant at Soquel and Santa Barbara than 

 elsewhere. It reaches a weight of 1^ pounds. 



121. Holconotus rhodoterus Ag. 



Tomales to Santa Barbara; not so common as most of the other spe- 

 cies, but often locally abundant; most numerous at Soquel. It reaches 

 a weight of nearly 1^ pounds. 



122. Holconotus agaBsizi (Gill) J. & G. 



Tomales to Santa Barbara; in abundance and distribution similar to 

 the preceding species. It rarely weighs over ^ pound. 



123. Holconotus argenteus (Gibbons) J. & G. — Wall-eye; While Perch. 



San Diego to Tomales; everywhere abundant. Taken with seines in 

 great numbers in sandy shores, and often with hook and line from the 

 wharves. It weighs about J pound, and is little esteemed. 



