POLYCHAETOUS ANNELIDS FKOM PHILIPPINE SEAS. 607 



Head (fig. 9) with length (including peduncles) about three 

 times the width. Palps somewhat less than twice as long as entire 

 head, tapering at end, faintly papillose. Tentacular cirri, two on 

 each side, borne on long basal portion, extending three-fourths of 

 length of palp. Median tentacle slender, borne on short basal por- 

 tion, extending slightly beyond peduncles. Paired tentacles present, 

 equal in length to the median tentacle, but not seen from the dorsal 

 surface. Eyes, two pairs; anterior large, reddish, and borne on 

 peduncles; posterior small, gray, and situated dorsally equidistant 

 from base of peduncles and median tentacle. 



Dorsal surface of first seven somites conspicuously tuberculated 

 in type. Xot tuberculated in paratype. 



Eltrya (fig. 10) oval, grayish, with black edging medianly and 

 posteriorly, giving the whole a shaded appearance. 



Parapodia (fig. 11) stout, with small antero-dorsal lobe sepa- 

 rated by a deep cleft. Dorsal cirrus stout, reaching beyond body of 

 parapodium. Ventral cirrus small, not reaching to edge of para- 

 podium. 



Setae of three kinds. Dorsal long, slender, provided with hair- 

 like points along the terminal portion (fig. 12) ; subterminal portion 

 slightly enlarged. Middle setae (fig. 13) heavy, yellow, bluntly 

 pointed terminally and provided with a group of fine needle-like 

 teeth just below the termination. Ventral setae (fig. 1-t) like the 

 dorsal, strongly serrated along the enlarged subterminal portion, 

 the serrations becoming smaller toward the tip. The setae did not 

 cover the scales dorsally in any part of the body. 



Type collected at Dumurung Point, Masbate Shore, or Tinakta 

 Island. 10 fathoms, coral sand bottom. Paratypes collected at stations 

 D5157 and D5158, Tinakta Island, 18 fathoms, fine sand bottom. 



This species resembles Panthalis panamensis, Chamberlin. 1 The 

 differences between the two species are the coloration of the ommato- 

 phores or peduncles, the shape of the head, the absence in P. adum,- 

 brata of the finer setae in the dorsal series and the absence in P. 

 abumbrata of the lash-like process in the median setae. The last may 

 be due to breakage. 



Family NEREIDAE. 

 Genus NEREIS Linnaeus. 



NEREIS MASALACENSIS Grube. 



Nereis {Lycoris) masalacensis Grube ilsisi p. 75, pi. .">. tig. 4. 

 Collected at Varadero Bay and at station D5146, Sulade Island, 24 

 fathoms, coral sand and shell bottom. 



— ^ 



^OlO, p. 86, pi. 11, fig. 4-8; pi. 2, fig. 1-6. 



