368 PROCEEDINGS OF THE ACADEMY OF [April, 



ciiTOstyles flagelliform, smooth, reaching beyond the tips of the 

 longest setse, only a few in place. No neurocirri remaining. 



Both acicula are rather stout, the distal ends being less attenuated 

 than usual and apparentl}^ not perforating the integument of their 

 processes; they are longitudinally striated throughout. No trace of 

 notopodial setse can be detected. Neuropodial setse are numerous 

 and form a dense silvery white, flat brush not divided into horizontal 

 series and nearly twice as long as the foot. They are straight, delicate 

 and colorless with slender shafts and thin expanded distal ends tapered 

 to blunt points. The margins are serrated with short, appressed teeth 

 which are rather course on dorsal setse (PI. XXXI, fig. 58), very fine 

 on those in the ventral part of the bundle. 



Proboscis clavate, strongly depressed distally, 4 mm. long, 2.2 mm. 

 broad and 1.3 mm. deep at distal end. Orifical papillae rather small, 

 nine above and nine below in close series. Jaws deep brown, hard; 

 the fangs prominent; the cutting plates rather small and directed 

 transversely, the ventral biting inside dorsal. 



The specimen is of a nearly uniform pea-green color cjuite probably 

 the result of staining. 



Station 4,352, off Point Loma Light, ^'icinity of San Diego, 549-585 

 fathoms, green mud (type only). 



Polynog(?) renotubulata sp. nov. PI. XXXI. figs. 59-64. 



Known from the type only — a much mutilated specimen consisting 

 of 35 somites which measure 26 mm. long, with a width of body just 

 behind middle of piece of 3.6 mm., between ends of parapodia of 

 13 mm. and between tips of setse of 22 mm. 



Prostomium (Pi. XXXI, fig. 59) shaped much like that of Polynoe 

 longipedata Mcintosh but shorter, the length l:)eing about two-thirds 

 width, without the lateral ceratophores subrectangular ; posterior 

 region constricted to form a sort of pedicle, anterior to which the 

 prostomium abruptly expands into a pair of opake hemispherical 

 prominences forming its widest part and corresponding to the ocular 

 lobes, within which the opake white bodies are probably modified 

 eyes lacking every trace of pigment. Anterior to these lobes the 

 prostomium is more translucent and tapers slightly into the lateral 

 ceratophores and anterior margin. There is no anterior sinus, 

 dorsal furrow or cephalic peaks. Median ceratophore arising on dorsal 

 surface posterior to middle, short, thick, its diameter more than one- 

 third width of prostomium; its free ends with a deep rim deficient 

 anteriorly and projecting at the sides as rounded lobes possibly cor- 

 responding to the tentacular scales referred to by Mcintosh in his 



