1911.] NATURAL SCIENCES OF PHILADELPHIA. 237 



series completely, but to enter largely into the formation of the other 

 rows, especially at the dorsal end. Their ends have the form shown 

 in figures 15, 15a, both forks being gently ciu-ved, tapered and strongly 

 serrated along the inner borders, the longer being about twice as long 

 as the shorter and without a widened region. Such setre appear to 

 be absent from I, but are aHke on other segments and are usually 

 distinctly shorter than the gills. They seldom show any trace of 

 internal annulation or cameration. ^lost of the seta) of the second 

 and third rows are of the simple spurred form (Pi. XV, figs. 13, 14) 

 with nearly straight, smooth tips, those of the second row being longer 

 and stouter, many of them reaching beyond the gills, those of the 

 third row shorter than the serrate setae. At the extreme ventral end 

 of the palisade is a small compact tuft of much shorter settc with very 

 short tips. 



Neuropodial setae (PI. X\\, figs. 16 and 17) arise in several rows 

 from an elliptical area. Those in the dorsal part of the bundle are 

 nearly twice as long as the neurocirrus, but ventrally they become 

 shorter until the most ventral are scarcely one-third as long as the 

 cirrus. They have the general form of the smooth notopodial cirri, 

 but are rather more slender and have longer, more curved ends and 

 longer spurs. 



Except for a pair of dusky spots on each segment of the median 

 dorsal field and some dusky suffusions elsewhere, both specimens are 

 colorless. 



Stations 4,410, off Santa Catalina Island, 178-195 fathoms, gray 

 sand, gravel and rocks (type); 4,470, off Point Pinos Lighthouse, 

 Monterey Bay, 61-69 fathoms, hard gray sand. 



, Euphrosyne limbata sp. nov. PI. XV, figs. 7-11. 



The single strongly curved specimen has a length of 17 mm., a 

 maximum width of 7 mm., and a depth of 3 mm. ; segments 36. 



Prostomial caruncle short, beginning at posterior border of II and 

 reaching barely beyond caudal border of lY; low, depressed rather 

 than compressed, the base narrow and overlapped laterally by the 

 spreading crest which reaches slightly beyond the base posteriorly 

 also. Eyes two pairs, the dorsal black, somewhat elongated, slightly 

 larger than the ventral, situated close together at the sides of the 

 anterior end of the caruncle; ventral eyes smaller, nearly touching 

 at median line, situated at ventral end of a low ridge whicli continues 

 the caruncle forward and ventrad. Median tentacle situated as usual 

 at anterior end of caruncle between dorsal eyes, consisting of a stout 

 cylindrical ceratophore about one-third length of caruncle and a 



