540 PROCEEDINGS OF THE ACADEMY OF [July, 



slender acicular process which is not prolonged into a filament beyond 

 the place of emergence of the aciculum. The notopodial cirri have 

 a form similar to the median tentacle, b\it the siibterminal enlargement 

 is rather more prominent and the entire style about \ longer so that 

 they reach well bej^ond the tips of the longest seta?. They bear clavate 

 cilia which decrease in size and number distally and are altogether ab- 

 sent from the distal filament. The ceratophores are small and slightly 

 dorsal and j^osterior to the base of the notopodium. Ventral cirri arise 

 well distad of the middle of the ventral surface of the parapodium; they 

 have slender subulate styles that barely reach the base of the neuro- 

 podial acicular process. Toward the ends of the body the parapodia 

 undergo the customary changes in form, the posterior dorsal cirri espe- 

 cially being very slender, elongated and nearly lacking the subterminal 

 enlargement. 



Each ramus of the parapodium is supported by a tapering aciculum, 

 especially stout in the case of the neuropodium, and suddenly reduced 

 in diameter at the end, ^\'hich is free for only a short distance. All of 

 the setae are of a pale glistening straw color and to the naked eye or 

 under a hand lens appear to be highly burnished. The notopodials 

 (fig. 23) are relatively few in number and spread radially from a center. 

 The dorsal ones are quite short ; the ventrals about § as long as the 

 longest neuropodials. All are rather stout, nearly straight, with short, 

 bluntly pointed, smooth tips and numerous rows of minute spines ex- 

 tending about half way round the seta and covering about h of its 

 exposed portion. All of the neuropodials and especially the supraaci- 

 cular ones are very long and slender. They are arranged in a dense 

 tuft sj^reading vertically. The shaft is very slightly curved and the 

 distal thickening (fig. 22) remarkably elongated and at the tip (fig. 22a) 

 abruptly contracted into a delicate terminal bristle. All of this region 

 is furnished with numerous short transverse rows of long, A^ery fine 

 hairs which become longer and more spreading at the tip where a num- 

 ber of the longest overlap the base of the terminal awn. The peris- 

 tomial parapodium bears small tufts of both notopodial and neuropo- 

 dial seta?. 



The general color of the body above is reddish-brown with narrow, 

 light, transverse, intersegmental lines which become broader in some 

 of the paler specimens, in which also a second narrow transverse line 

 may appear across each segment. The dorsal cirri and all cephalic 

 appendages except the palpi, which are pale, are dark brown with a pale 

 subterminal ring. The elytra are pale marbled with brown, especially 

 posteriorly, or with 2 large divided crescentic spots of brown. One 



