LEODICE LITA. 243 



The first branchia on the right side occurs on somite XVII, that of the left 

 side on somite XVIII. They cease at or very near somite CXII, the somite 

 not being determinable with certainty in the type. The first branchia is a short, 

 slenderly conical, or subulate, simple process arising dorsally from the base of 

 the notocirrus, which greatly exceeds it. Those immediately succeeding in- 

 crease progressively in length, becoming more filament-like, and the sixth and 

 succeeding ones exceeding the notocirri, in the posterior part of the series greatly 

 so. The anterior branchiae are all simple filaments; the twelfth and thirteenth 

 bifurcate below the middle; some of the immediately following ones are again 

 simple, but most are bifid, the branching occurring closer to the base, while in 

 the posterior portion of the series all are simple filaments again. (Plate 54, 

 fig. 6-10; Plate 55, fig. 1). 



The first pair of maxillae are tliin and pale. The carriers are proportion- 

 ately elongate and narrow; the piece formed by the two of them is narrowest 

 at the anterior end where the sides are nearly parallel, the caudal region on 

 each side moderately convexly bulging; an acute median incision between the 

 halves caudally. The blades proportionately to the carriers are broad, pro- 

 jecting on each side widely beyond the outer edge of the latter. Each has the 

 general sickle-shape usual in the genus. (Plate 55, fig. 3). Maxillae II are 

 also pale. The outer edge of each is bent upward and is a little reflexed at the 

 extreme caudal angle, the elevated portion short, narrowing and disappearing 

 rapidly cephalad. The caudal margin deeply excavated between the outer 

 elevated angle and the inner caudal process, the outer angle projecting caudad 

 nearly as far as the inner process. On the left one there are four stout, distally 

 rounded teeth, on the right five, the teeth on each occupying a space decidedly 

 shorter than the smooth edge proximad of them. The left paired plate of 

 maxillae III bears seven small teeth, the right one eleven. The unpaired plate 

 bears four (or five) teeth. The structure of maxillae IV was not made out 

 clearly. The mandibles are pale throughout excepting the outer border of each 

 masticatory plate, which is blackish. Each masticatory plate is broadly oblong 

 in outUne, a little bent caudad and with the angles rounded; the edges are 

 wholly smooth, having neither processes nor incisions; the two meet at an acute 

 angle in the middle. The stems, anteriorly as wide as the plates, narrow gradu- 

 ally and strongly caudad, the caudal portions curving away from each other. 

 (Plate 55, fig. 2). 



Locality. Marshall Islands. A single specimen came up on the anchor 

 from a depth of 12 fms. Albatross Exped. 1899-1900. 



