. Carnegie Institution of Washington publication. Leodicidce from Fiji and Samoa. 145 In general appearance this species is very similar to Leodice biformi-cirrata, if individuals of the same size are compared, but differ decidedly from larger individuals of the latter species. In L. biformi-cirrata the cirri and gills are large relatively to the somite; in L. armillata behind the middle region the somites are short, thick, and much rounded, with relatively very short parapodia. In small L. biformi-cirrata gills are absent from a considerable number of the posterior somites and there is one pa
. Carnegie Institution of Washington publication. Leodicidce from Fiji and Samoa. 145 In general appearance this species is very similar to Leodice biformi-cirrata, if individuals of the same size are compared, but differ decidedly from larger individuals of the latter species. In L. biformi-cirrata the cirri and gills are large relatively to the somite; in L. armillata behind the middle region the somites are short, thick, and much rounded, with relatively very short parapodia. In small L. biformi-cirrata gills are absent from a considerable number of the posterior somites and there is one pair of articulated anal cirri; in L. armillata, even in the small individuals, the gills are con- tinued to within 10 somites of the py- gidiura and there are two pairs of non- articulated anal cirri (plate 3, fig. 15). The prostomium (plate 3, fig. 14) is bilobed, rather narrower than the peri- stomium. The tentacles are all monili- form without evident cirrophores, with about 25 joints in the median, 18 in the inner paired, and not more than 10 in the outer paired. The relative lengths of these tentacles in preserved material is indicated in figure 14. The eyes are prominent and lie in the usual position. The anterior border of the peristomium is produced into a narrow collar-like structure which protrudes to a short distance over the prostomium. The width of the peristomium is about twice that of its length; toward its posterior dorsal surface it has a prominent white spot, the remainder of its surface being tinted light brown. The animal figured was 2 mm. wide at the peristomium, 60 mm. long., and had 160 somites. The second somite is about one-third as long as the first, its nuchal cirri without artic- ulations and shorter than the peri- stomium. , , i. .J The gills begin with 1 filament on the sixth setigerous somite. On the left side of the body the eighth somite has a gill with 2 filaments, while on the right side the seventh and eighth each has 1 filament and the ninth
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