1903.] NATURAL SCIENCES OF PHILADELPHIA. 435 



constricted. Next pair of dorsal jaws triangular \\dth the two posterior 

 angles prolonged, and the anterior angle provided with a strong, some- 

 what hooked tooth supported by a small anterior one. and succeeded 

 on the left, which is the larger of this pair of jaws, by four, and on the 

 right by three,, somewhat unequal teeth, while the remaining posterior 

 third of the medial side is edentulous. The anterior group of dorsal 

 jaws includes four pieces on the right, and three on the left side ar- 

 ranged in arcs ; the most external on each side is a small toothless plate ; 

 the next bears one tooth. The next, which is the most anterior of the 

 group, is supported by a small, deep brown plate wdth a larger thin 

 yellow extension; on the right side it bears 8 teeth, and an internal 

 slightly serrated ridge; on the left it is much shorter, and bears but 

 6 teeth, but is supplemented by the fourth jaw plate, which fits inside 

 of its posterior end, is of an elongated crescentic form and bears about 

 12 teeth. The mandibles are remarkably prominent, the two halves 

 freely movable on each other, the whitish calcareous pieces less than ^ 

 the length of the slender yellow carrier, strongly divergent, irregularly 

 oval in form, with four ridges and as many obscurely indicated mar- 

 ginal teeth, the anterior angle prominent, almost hooked. 

 Suruga Bay, 3,718, 65 fms. 



Eunice vittata Delia Chaije. 



Quite common at station 3,707 in Suruga Bay in 65-75 fms. 

 Eunice quinquifida sp. nov. (PI. XXV, figs. 39, 40, 41.) 



The single specimen representing this species is incomplete, consist- 

 ing of the head and 56 somites measuring 45 mm. long and 4 mm. be- 

 tween the tips of the parapodia. 



Prostomium about twice as wide as long, very deeply cleft in front 

 and the frontal tentacles so strongly divergent that in ventral view it 

 appears to be formed of two broadly pyriform halves connected at their 

 apices by a rather narrow posterior band, terminal pieces of frontal 

 tentacles even smaller than usual. Eyes, 1 pair, large, Ijrown, in the 

 usual position and largely concealed by the free anterior border of the 

 peristomium. Tentacles all irregularly and boldly articulated, rather 

 short, tapering; the median evidently imperfect, the inner lateral 

 reaching to VIII, and the outer lateral to III. Peristomium very long, 

 especially on the sides where, with its broad anterior lobes, it much ex- 

 ceeds the prostomium which it dorsally encloses as far as the bases of 

 the tentacles in a prominent fold uniting with the sides of the prosto- 

 mium below the eyes as far forward as their anterior borders. 



The second somite is very short, not more than | of the peristomium, 



