. Carnegie Institution of Washington publication. 124 LEODICIDyE OF THE WEST INDIAN REGION. anterior pair being much larger and slightly farther apart than the posterior. The palps are long and slender, slightly wrinkled on their posterior faces (plate 9, figure 18). The tentacles are shorter and more slender than the palps, articulated throughout. The peristomium and first somite are marked with brilliant red bands, occupying a large part of their dorsal surfaces, while succeeding somites, as far back as the region of the eighteenth, have a narrow red line toward their anterior margins (plate
. Carnegie Institution of Washington publication. 124 LEODICIDyE OF THE WEST INDIAN REGION. anterior pair being much larger and slightly farther apart than the posterior. The palps are long and slender, slightly wrinkled on their posterior faces (plate 9, figure 18). The tentacles are shorter and more slender than the palps, articulated throughout. The peristomium and first somite are marked with brilliant red bands, occupying a large part of their dorsal surfaces, while succeeding somites, as far back as the region of the eighteenth, have a narrow red line toward their anterior margins (plate 9, figure 18). Beginning with somite 10 and extending to about the middle of the brdy, each somite carries a triangular white dorsal patch, with the apex directed anteriorly and running onto the somite in front. The remainder of the body is pale yellow. None of this color persists in preserved material (Plate 9, figure 19). The first parapodium (text-figure 452) is without a dorsal cirrus, but has a promi- nent ventral one. There is a slender, cirrus-like posterior lip to the setigerous portion, and a large acicula extends into the latter just anterior to this lip. The later parapodia (text-figure 453 of the tenth) have prominent dorsal cirri, which in some cases seem to be jointed at the end, but this (possibly because of poor preservation) was not demon- strable in all somites. The cirrus contains a tuft of needle aciculse. The setal lobe is beveled at the apex; there is a small posterior lobe and a slender ventral cirrus. Later parapodia do not differ in any important respects from the tenth. Ventrally each parapodium has a tuft of compound setse, showing a definite increase in length from the ventralmost toward the dorsal side of the tuft. They are slender, with a long, narrow, very decidedly bidentate end, and covered with a delicate hood which extends beyond the seta and is denticulated along the edge (text-figure 454). Dorsally there are two sorts of simple setae, diffe
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
