<)1G BULLETIN LOO, UNITED STATES NATIONAL MUSEUM. 



Dorsal setae of simple capillary variety. Acicula light yellow in 

 color, with blunt termination. 



Type collected at station D5159, Tinakta Island. 10 fathoms, coral 

 sand bottom, and paratype (poorly preserved), at station D5205, 

 Caguayan Point, off Leyte Csland, 8 fathoms. 



LEODICE ACCRESCENS, new species. 



Plate 50, figs. 13-16; plate 51, figs. 1-2. 



Type. — Cat. No. L8956, U.S.N.M. A large incomplete specimen, 

 L50 mm. in length; width, 9 mm., uniform throughout. Number of 

 somites, 289. Anal cirri lacking. 



Head (pi. 50, fig. 13) provided with rive smooth tentacles, the 

 median slightly larger than the intermediate, and intermediate 

 slightly longer than lateral. Eyes small and irregular, situated just 

 median to base of lateral tentacles. Prostomium deeply notched, 

 with lobes slightly shorter than lateral tentacles. Peristomium or 

 first somite broad and smooth. Stout tentacular cirri on second 

 somite. Parapodia on third. 



Dental apparatus (pi. 50, fig. 1-1) dark brown. Maxillae with com- 

 paratively long basal joint. Terminal joint sickle-shaped, with 

 prominence for articulation with great dental plate. Right dental 

 plate with four large round teeth; left with three similar teeth and 

 irregular surface posteriorly. Anterior lateral plates small and 

 finely toothed. Posterior lateral plates small and smooth. Man- 

 dibles (pi. 50, fig. 16) heavy. Posterior part light brown. Dental 

 plates clear white and recurved dorsally on lateral side. 



Anterior parapodia provided with moderately long dorsal cirrus 

 and cushion-like ventral cirrus. No gills. Gills begin at irregular 

 intervals in region of eightieth somite, as small knob-like processes 

 at base of dorsal cirri (pi. 51, fig. 1). Three acicula, all ending in 

 blunt points. Posteriorly gill increases in length (pi. 51, fig. 2), 

 extending almost to mid-dorsal line. Dorsal cirrus greatly reduced. 

 Third aciculum lost. 



Setae of two kinds. Ventral compound (pi. 50, fig. 15), with bifid 

 terminal portion, finely serrated shield, and serrated basal shaft. 

 Doffcal setae of simple, capillary form. 



LEODICE ACCRESCENS, new species, young. 



The only differences between this form and the adult specimens are 

 the first appearance of the gills in the neighborhood of the one- 

 hundredth somite (a point posterior to that in the adult), and the 

 fewer number of acicula. Here there are two acicula to a para- 

 podium anteriority and one posteriorly. 



Collected at station D5148, Jolo Light, Jolo, 17 fathoms, coral sand 

 bottom, and station I).~>142. Sirun Island. '21 fathoms, coral sand and. 

 shell bottom. 



