NO. 3 hartman: submarine canyons 43 



parapodia are much larger. Branchiae are first present from the 

 eighth setiger and present on more than 20 segments. The modified 

 fifth segment has three kinds of setae ; the largest, numbering about 

 6 on a side, are thick and acicular; they terminate in an oblique 

 concavity and a subterminal thick shoulder. The companion setae are 

 much slenderer, distally pointed and subdistally expanded. A fascicle 

 of stiff, distally pointed geniculate setae forms a lower tuft, some dis- 

 tance below the curved series of large hooks. Anterior neuropodia, 

 from the seventh segment, have hooded hooks in which the main 

 fang is larger than the subdistal tooth and nearly at right angles to 

 the shaft. In posterior segments these hooks have a main fang ob- 

 tuse to the shaft and the subdistal tooth is much smaller and shorter. 



Prionospio pinnata Ehlers, 1901 



Monterey en, in 168 m (5), 260 m ( ? 1). 



Hueneme en, in 165 m (16), 177 m (14 large, measure to 85 

 mm long), 183 m (4), 383 m (1 small), 373 m (4), 376 m (2), 

 397 m (6, lack eyes and branchiae are firmly attached), 456 m (2). 



Mugucn, in 119 m (4), 177 m (15), 367 m (5). 



Dume en, in 299 m (3), 374 m (3), 398 m (4), 580 m (2 small). 



Santa Monica en, in 268 m (3), 330 m (1 small), 362 m (3 

 fragments), 454 m (1, lacks eyes), 542 m (1, lacks eyes). 



Redondo en, south wall, in 232 m (8), 378 m (1), 519 m (2), 

 575 m (2), north wall, 107 m (8), 113 m (12), 120 m (10), 130 m 

 (5), 146 m (7), 554 m (1), axis, in 137 m (7 large), 148 m (33), 

 239 m (2), 246 m (4), 282 m (12), 344 m (6 large), 378 m (5), 

 422 m (8), 431 m (13), 503 m (22 large, measure to 150 mm long, 

 prostomial eyes reduced or invisible, branchiae firmly attached) ; 560 

 m (13), 611 m (6 large, branchiae firmly attached), slope, 310 m (10), 

 334m (several), 560 m (15), 652m (2 small). 



San Pedro sea valley, in 187 m (13), 221 m (47), 319 m (2 

 small), 406 m (5), 459 m (7 small), 522 m (5). 



Newport en, in 16 m (32), 37 m (28 large, and 16), 85 m (4 

 large), 97 m (15), 140 m (1), 170 m (6), 178 m (5), 211 m (15), 

 235 m (24), 272 m (15), 420 m (8, lack eyes), 553 m (2 jv). 



La Jolla en, in 79 m (7), 121 m (2), 135 m (2), 274 m (2 

 large), 371 m (1 large and 3 small). 



Coronado en, in 123 m (1 jv), 177 m (2), 344 m (3). 



Santa Cruz en, in 89 m (2, with 4 very small eyes) . 



Catalina en, in 88 m (2), 216 m (l),266m (12), 362 m (5 small) 

 379 m (4 small) , 549 m (2 fragments) , 559 m ( 1 ) . 



Tanner en, in 603 m ( ? 1 ), 1298 m ( 1 jv or small). 



