COMPLETE HARTMAN : POLYCHAETES FROM CALIFORNIA 55 



silt. They agree in all details with an earlier account (Hartman, 1939) 

 based on specimens from Mission Bay, California. 



The species is more widely recorded from both sides of tropical Amer- 

 ica and north to southern California, in shallow sandy sediments. 



Family Pisionidae Levinsen 



Genus Pisione Grube, 1857 



Pisione remota (Southern) 1914 



Praegeria remota Southern, 1914, pp. 61-63, pis. 7, 8. 

 Praegeria remota Fauvel, 1923, p. 125, fig. 45. 

 Hartman, 1955a, p. 181. 



Many individuals have been taken in very shallow sea bottoms of 

 gravelly sand. The species was best represented in VELERO IV Stations 

 2445 (many), 2788 (many), 6205 (more than 100) and others. 



The body is long, slender, measures 5 to 8 mm long, and consists of 

 28 to 40 segments. The prostomium is indistinctly set off from the buccal 

 segment. The ventral cirrus of the first segment is long, resembling a ten- 

 tacular cirrus but shorter. All other ventral and dorsal cirri are globose 

 and have a slender distal filament. The prostomium has 4 eyes; the two 

 on each side are nearly coalescent; the anterior eyes are larger and 

 farther apart than the posterior ones. Paired palpi are thick, long and 

 directed forward. Tentacular cirri are about half as long and much 

 slenderer. The tentacular segment has yellow embedded acicula. 



Parapodia have setae of three kinds ; a supra-acicular simple seta, 

 thicker than the others, terminates distally in an oblique tip and has a 

 transverse row of spinelets along its edge. A simple, slightly falcate long 

 spine, in subacicular position, is followed by 3 composite falcigers in 

 which the end of the shaft has a slight rounded knob, and the appendage 

 is delicately toothed at the cuting edge. Acicula and setae are pale yellow. 



In male individuals, setigerous segments 20 to 25 are modified and 

 followed by 3 normal segments. In female individuals, ova are bright 

 green and present in middle segments. The anal end has a pair of long, 

 slender filaments inserted laterally. 



Specimens from California and western Mexico differ from descrip- 

 tions of P. remota from Europe, in that the superior simple setae of 

 anterior and posterior segments are alike and do not have the distal 

 denticulations shown by Southern (1914). 



In California and western Mexico, P. remota is limited in its distri- 

 bution to sediments of coarse red sand in shallow shelf depths. At its 

 greatest concentrations, it is accompanied by other invertebrate animals 



