NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 87 



eyes. The peristomium is a short simple ring weakly set off from the 

 prostomium (Plate 6, fig. 1). The pharynx (seen only by dissection) 

 is muscular, cylindrical, and extends back through the first 13 segments, 

 or through the widest part of the body; there are no horny or papillar 

 structures. 



The first parapodia are uniramous and all others are biramous, with 

 notopodia and neuropodia widely separated (Plate 6, fig. 2). Each ramus 

 is supported by a yellow rodlike aciculum that tapers distally. Notopodia 

 are obliquely truncate, longest at their lower edge and have 6 to 14 

 simple, hairlike setae in a spreading fascicle. Neuropodia are obliquely 

 truncate in the opposite direction; they are larger and longer than their 

 corresponding notopodia and have 8 to 20 composite spinigers in which 

 the articulation is extremely heterogomph (Plate 6, fig. 3). The ap- 

 pendage is delicately serrated at the cutting edge. The heterogomph tip 

 has been shown as a uniquely separate wishbonelike piece (Fauvel, 1923, 

 fig. 74 h, i) but as interpreted here (Plate 6, fig. 3) it is not highly 

 modified, and the appearance is the result of an overlying sheath of the 

 shaft, partly covering the heterogomph tip and surrounding the base 

 of the appendage. The differences as shown in the illustrations (noted 

 above in the references) are believed to result from various interpreta- 

 tions and may not be specific. At the lowermost part of the neuropodial 

 fascicle there are usually one or two simple, hairlike setae, especially in 

 posterior segments; this feature has been selected to distinguish P. para- 

 doxa from the nearly related P. weberi Horst (Fauvel, 1932, p. 74) ; 

 when overlooked, there is little to distinguish the two. 



The subacicular lobe of notopodia, and the supra-acicular lobe of 

 neuropodia usually appear conical or inflated, projecting beyond the 

 rest of the parapodial length (Plate 6, fig. 2). Dorsal cirri are short, 

 blunt, presetal in position, and ventral cirri are much shorter. 



The curious distribution of this species remains unexplained. First 

 described from off Monaco, Mediterranean Sea in 24 fms (Fauvel, 1913, 

 p. 54), it has been recorded as P. mortenseni Augener (1924, p. 311) 

 off New Zealand in shallow water. Fauvel (1932, p. 74) redescribed 

 it from India, and Uschakov (1958, p. 221) from the China Sea in very 

 shallow bottoms. If P. iveberi Horst (1923, p. 221) is a synonym, it 

 is present also in the Banda Sea in 480 fms. The present records originate 

 entirely from the eastern Pacific Ocean, only in the outer deep basins, 

 and in depths of 962 to 1030 fms. It is not known to occur in shallower 

 depths or closer to shore, where extensive collections have been made. 



