230 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXV 



long as the head. Parapodial areas on all three are anterior and 

 consist of a dorsal line of setae and a single ventral spine, both 

 sessile. Somite V is as long as IV, cylindrical, much darker in 

 color than the preceding segments; VI, VII and VIII are similar, 

 except that the latter passes into IX without any furrow. Beginning 

 with V, there is a short dorsal line or tuft of setae and a ventral 

 transverse series of crochets. On V to VIII the setae are at the 

 middle, on IX near the caudal end, though owing to mutilation it 

 is impossible to determine the exact length of the latter. None of 

 these segments exhibits clearly marked glandular areas. 



Notopodial setae form dense flat fascicles of moderate size and 

 appear to be alike on all segments, though most of them are broken. 

 They are simple, colorless, alimbate, very slender, capillary, 

 tapering and smooth. Spines (Plate XVIII, fig. 35) on anterior 

 segments (II to IV), much smaller than in related species. They 

 are relatively slender, nearly straight, except near the end where 

 there is a slight bend below the blunt point, pale yellow and faintly 

 striated. Crochets (Plate XVIII, fig. 36) about fifteen or twenty 

 in each series, small and slender, with curved, tapering stem, 

 shoulder and neck only slightly marked and head but little bent 

 back, with acute beak at right angle to shaft and depressed crest 

 of four rather acute teeth of diminishing size and a lateral brush; 

 guard weak, of about eight slender, short filaments. 



Station 4326, off Point La Jolla, 243-280 fathoms, soft green 

 mud (type only). 



Euclymene reticulata sp. nov. Plate XVIII, figs. 37, 38. 



Described from the type only, a large example consisting of the 

 head and nine setigerous segments, measuring 52 mm. long and 

 4.5 mm. in diameter. 



The head and first setigerous segment are completely united 

 into a single piece twice as long as III, somewhat depressed, dis- 

 tinctly widened in the middle and contracted slightly, both im- 

 mediately behind the cephalic plate and at the furrow II /III. 

 Cephalic plate forming with the body axis a dorsal angle of about 

 45°, with semi-erect limbate margins, which, with the depressed 

 center, give a general saucer-like effect. The margin of the limbus 

 is smooth and entire, except for an anterior interruption from which 

 the palpode protrudes, a posterior median notch and a pair of 

 larger lateral notches about one-third of the length from the caudal 

 end; the limbus anterior to these being wider and more flaring, 

 posterior stiffer and more erect. Central disk oval, widest at the 

 lateral notches, one and one-third times as long as wide, and marked 

 by a few wrinkles. Carina low and rounded but well marked, 

 long and straight, of nearly uniform width and about three-fourths 

 length of central disk or two-thirds length of entire cephalic plate. 



