1911.] NATURAL SCIENCES OF PHILADELPHIA. 305 



Prostomium 12-annulate, the four apical tentacles minute. Segments 

 strongly biannulate. Gills begin at XIV in the same position as in 

 G. rugosa. but are much more complex than in that species. All are 

 branched, but the most anterior and posterior have only two or three 

 slender divisions. The most are very large and complex, reaching 

 from their place of origin at the posterior dorsal part of the foot over 

 most of its posterior face. The largest divide immediately at the base 

 into three or four large branches, each of which spreads vertically 

 into a flat plane divided irregular iy several times into slender filaments. 

 Most of the larger gills consist of thirty or forty filaments. Proboscis 

 53 mm. long and 7 mm. in diameter, but jaws not exposed, thickly 

 covered with papilla? of the same form as those of G. rugosa. This 

 specimen agrees rather better with the description of G. chilensis, 

 especially in the form of the jaw appendage and the mode of branching 

 of the gills. 



Station 4,322, off San Nicolas Island, 31-32 fathoms, gray sand 

 and shells. 



G-ONIADID^]. 



Goniada annulata Moore. 



Goniada annulata Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 549-553, 

 PI. XXXVI, figs. 45-48. 



A considerable representation of this species, usually only one 

 example from each station, shows a wide range of color variation from 

 yellow through light brown, gray and dark brown to purple, usually 

 more or less distinctly annulated, but some of the most deeply pig- 

 mented ones nearly uniform. Some of them are sexually mature. 

 Notopodial seta? begin on XXXIII or XXXIV, in the latter case the 

 preceding parapodium being usually provided with a small acha?tous 

 notopodium. The sexual region, characterized by long swimming 

 setae and neural eye-spots, begins on different specimens at LIV, LV 

 or LVI. The proboscis and its jaws and papilla? agree very closely 

 with the types. 



Stations 4,307, off Point Loma Lighthouse, 490-496 fathoms, green 

 mud and fine sand; 4,326, off Point La Jolla, vicinity of San Diego, 

 243-264 fathoms, soft green mud; 4,325, same locality, 275-292 

 fathoms, green mud and fine sand; 4,352, off Point Loma Lighthouse, 

 vicinity of San Diego, 549-5S5 fathoms, green mud; 4,353, same 

 locality, 62S-640 fathoms, green mud; 4,366, same locality, 176-181 

 fathoms, green mud; 4,369, same locality, 260-284 fathoms, green 

 mud, sand and rock; 4,462, off Point Pinos Lighthouse, Monterey 

 Bay, 161-265 fathoms, green mud; 4,508, same locality, 292-303 



