370 PROCEEDINGS OF THE ACADEMY OF [April, 



Parapodia (PI. XXXI, fig. 60) remarkably elongated ; many have been 

 torn away or injured but a sufficient number remains to make evident 

 their noteworthy features. They are much longer than the width of 

 the segments to which they are attached, are compressed at the base 

 and tapered into the neuropodium which is slender with nearly parallel 

 dorsal and ventral borders, slightly compressed and subtruncate 

 distally, the presetal lip longer and somewhat pointed and prolonged 

 into a delicate, acicular process fully half as long as the ventral border 

 of the parapodium and tipped with a short, blunt cirrus overhanging 

 the projecting point of the aciculum. Notopodium scarcely separated 

 from neuropodium, its basal part a small, slightly inflated cone bearing 

 a small tuft of delicate capillary setae and prolonged into a delicate, 

 slightly curved, almost fiber-like acicular process as long as that of 

 the neuropodium. Above and proximad of the neuropodium is a 

 small notocirrophore and slightly further proximad the slight re- 

 developed connate dorsal tubercle alternating with the larger elytro- 

 phores. 



All notocirrostyles are lost but the appearance of the cirrophores 

 indicates that they are quite small and perhaps rudimentary and it 

 may be that the nephridial papillae assume some of their functions. 

 Neurocirri (PI. XXXI, fig. 60) arise from slight cirrophores proximad 

 of the middle of ventral border of parapodia, somewhat inflated 

 (perhaps abnormally) at the base and tapered to delicate tips which 

 reach the base of the nephridial papilla but fall considerably short of 

 the ends of the neuropodia. Anteriorly they are relatively larger 

 and the large cirrophore of II indicates that the lost style is of large 

 size. 



Acicula single in each ramus, yellow tinted, much prolonged into 

 delicate, fragile ends which reach to the ends of the acicular processes 

 enveloped in a thin integument beyond which the tip of the neuro- 

 podial alone projects. Notopodial setae a small tuft of very delicate, 

 smooth and long fibers. Neuropodials (PI. XXXI, figs. 62-64) form a 

 long and dense, flattened, brush-like fascicle projecting conspicuously 

 laterad and slightly dorsad. They are nearly colorless, vitreous and 

 have a fine satiny luster. The shafts are long and delicate, the distal 

 expansions relatively short but very broad and oar-like, gradually 

 widening to near the end and then rather abruptly tapered to a bifid 

 tip (fig. 63); marginal serrations are slightly developed along the 

 convex border ^ longest at the point of greatest width and becoming 

 obsolete toward the tip. 



A single elytron (PI. XXXI, fig. 61) only — the first one of the left side 



