1910.] ' NATURAL SCIEN'CES OF PHILADELPHIA. 365 



PolynoeC?) remigata sp. nov. PI. XXXI, figs. 47-51. 



Described from a single incomplete and mutilated specimen having 

 18 setigerous segments and measuring 17 mm. long, with a maximum 

 bod}^ width of about 3 mm. and a width between setae tips of about 

 10 mm. 



Prostomium (Pi. XXXI, fig. 47) about one-third wider than long, 

 coiisLsting of two broadly pyriform smooth lobes with broad spheroidal 

 ends caudad, the anterior ends narrower but roimded, without dis- 

 tinct peaks. Anterior fissure deep, reaching to middle of prostomium 

 and continued to its posterior border by a narrow furrow. Pigmented 

 eyes totally absent. Median cerataphore arises near middle of head 

 and occupies anterior fissure, moderately stout and cylindroid; style 

 missing. A pair of small swellings below the anterior ends of the 

 cephalic lobes probably represent the bases of the lateral tentacles, 

 the rest of which is missing. Palps both present but the left only 

 perfect, rather small, their basal diameter not exceeding one-third 

 of the width and their length two and one-half times the length of 

 the prostomium, smooth, tapered, with no sensor}^ cilia and no dis- 

 tinct terminal filament. 



Peristomium a short but (juite distinct ring united to the median 

 furrow of the prostomimn by a slight median fold. Its parapodia 

 (PI. XXXI, fig. 47) fail to reach anterior border of the prostomium, its 

 ceratophores distinct distally. All styles except the left peristomial 

 notocirrus, which has grown fast to the base of the palpus, lost. It 

 (fig. 47) is slightly longer than the palpus, has a slight subterminal 

 enlargement and a short but pronounced terminal filament and lacks 

 sensory cilia. 



Few parapodia are perfect, in the middle region (Pi. XXXI, fig. 48) 

 they are little longer than the width of their segments, compressed 

 at the base, the rami well differentiated. Neuropodium elongated, 

 with nearly parallel bordere terminated by a short, slightly convex 

 postsetal lip and a pointed presetal lip which is prolonged into a 

 slender, spine-like acicular process nearly the length of the free neuro- 

 podium and bearing a short terminal cirrus. Notopodium rather 

 large, more than half as long and half as deep as the neuropodiimi. 

 truncated conical; the ventral border prolonged into a straight, stiff, 

 slender, blunt-ended acicular process more than one-half the. length 

 of that of the neuropodium. All notocirri and neurocirri lost ; noto- 

 cirrophores (fig. 48) very large (prf)bably swollen in preservation), 

 well separated from notopodium. All elytra missing; elytrophores 

 borne on base of feet of somites 11, 1\', Y, \U, IX, XI, Xlll. X\' and 



