NO. 5 hartman: polychaetous annelids 333 



Pectinaria chilensis (Nilsson) 

 Plate 50, Figs. 12, 15; PI. 51, Fig. 19 



Pectinaria (Cistenides) chilensis Nilsson, 1928, pp. 37-40, figs. 11 A-G. 



Collections. — 379-35, Independencia Bay, Peru, in 20 fms (8) ; 

 380/381-35, same, in 5-20 fms (9) ; 831-38, same, shore (2) ; 834-38, 

 same, in 21 fms (3 and tube fragments) ; 835-38, same, in 18 fms (5 and 

 2 tubes). 



The tubes are straight (pi. 51, fig. 19), white or grayish, thin, fragile, 

 to 75 mm long, about 18 mm wide at the larger end, and 9 mm at the 

 smaller end, though perhaps not complete. Specimens measure about 46 

 mm long and 15 mm wide in the thoracic region. Cephalic spines are 

 brassy yellow, number 9 or 10 on a side, are distally long, attenuate when 

 unbroken or unworn, but most are distally blunt (because of wear). 

 There are 16 segments with notopodial fascicles, 12 with uncinigerous 

 tori, the last podous segment lacks setae. The antennular membrane has 

 30 to 60 filiform fringes at its free edge, the greater number on larger 

 specimens. The first pair of branchiae may greatly exceed the second (as 

 Nilsson found on his only specimen), or the 2 pairs of branchiae may be 

 subequal in size. 



Scaphal setae are disposed in transverse series, number 13 to 15 on a 

 side; their tips are slightly curved, as Nilsson has shown. The inner 6 to 

 8 of each series are somewhat smaller than the outer one. Setal fascicles of 

 the first 3 segments are notably smaller than those in succeeding segments. 

 Uncini have their major teeth in double series, each row with 7 (pi. 50, 

 fig. 12) or 8 teeth. The anal tongue has a crenulate margin. 



7"hese specimens agree with Nilsson's description except that the sec- 

 ond branchiae may be quite as large as the first, and the shorter notopodial 

 setae (pi. 50, fig. 15) taper distally more rapidly, lacking a distinct knee 

 (Nilsson, 1928, figs. 11 d-e). This has heretofore been known for only a 

 single specimen from Coronel, Chile. The numerous collections listed 

 above are entirely from Independencia Bay, Peru, shore to 21 fathoms. 



Pectinaria califomiensis, new species 

 Plate 49, Figs. 1-6 ; PI. 52, Fig. 21 



Collections. — (All are California.) 

 876-38, northeast of Anacapa Island, in 45 fms, (1 tube) ; 

 893-38, off Point Arguello, in 15-30 fms, ( 1 ) ; 



