1909.] NATURAL SCIENCES OF PHILADELPHIA. 337 



preserved and agree closely with typical examples of the species taken 

 in the North Atlantic at Labrador and Greenland, as well as with the 

 figures of Malmgren and other European authors. The only apparent 

 difference is that the Pacific examples may have one or two more papil- 

 lae in some of the rows on the proboscis, most of them having 11 or 12 

 in the upper and lower and 13 or 14 or rarely 15 in the middle rows. 

 None shows any trace of a median dorsal series, but the other papilla? 

 are prominent and generally have a conspicuous brown spot on the 

 posterior face. The form of the prostomium is very changeable and 

 may be pyramidal, ovate or deeply cordate, but is always more or less 

 emarginate posteriorly. The nuchal papilla is minute and inconspicu- 

 ous. Several specimens are regenerating lost caudal ends and one is 

 filled with eggs. 



Seven specimens from station 4,399, off San Diego, April 7, 245 

 fathoms, fine gray sand and rock; and one from each of the following: 

 4,445, Monterey Bay, May 11, 66 fathoms, green mud; 4,476, same, 

 May 16, 39 fathoms, soft green mud; 4,482, same, May 17, 43 fathoms, 

 soft green mud; 4,485, same, 108 fathoms, soft green mud and sand; 

 4,519, same, May 26, 35 fathoms, hard gray sand; 4,548, same, June 

 7, 46 fathoms, coarse sand, shells and rock. 



Phyllodoce medipapillata Moore. 



The median dorsal series of proboscidial papillae is always well 

 developed and quite as conspicuous as the others. Besides this charac- 

 ter this species is distinguished from the related P. mucosa by having 

 the setae .appendages much shorter and the notocirri ovate-lanceolate 

 instead of truncated as in that species. The large specimen is just 

 100 mm. long with 201 segments. 



A single example was collected at each of the following stations: 

 4,420, off San Nicolas Island, April 12, 33 fathoms, fine gray sand; 4,460, 

 Monterey Bay, May 12, 55 fathoms, green mud, gravel ; 4,558, Monterey 

 Bay, June 9, 40 fathoms, rock. 



Phyllodoce ferruginea sp. no v. PI. XV, figs. 15-18. 



Two complete specimens of nearly equal size. The type measures 

 46 mm. long, .7 mm. in maximum width of body and 1.2 mm. between 

 tips of parapodia; 148 segments. Very slender, nearly linear, widest 

 about end of anterior third, somewhat depressed. 



Prostomium (PI. XV, fig. 15) regularly elliptical, about five-sixths 



as wide as long, slightly depressed, slightly truncated at both ends 



and with a very slight posterior median emargination, strongly convex 



above. Eyes one pair, brown, very large with prominent lenses, 



22 



