LEODICE PANAMENA. 257 



The general color of the body is brown without markings. The tentacles, 

 cirri, and branchiae are very dilute yellow. 



The prostomium is a little more than half as long as the peristomium, than 

 which it is considerably narrower. It is strongly bilobed, the median vertical 

 incision being deep and acute. The lobes widen in subpyriform manner from 

 above ventrad. On each a smaller dorsal lobe is vaguely separated from a 

 much larger ventral one. The median and inner paired tentacles are arranged 

 in a transverse row in contact with the edge of the peristomium, while each outer 

 paired tentacle is distinctly farther forward and in front of the black eye-spot, 

 which is partly covered by the border of the peristomium. The median tentacle 

 has lost the tip and reaches only to the third somite. The inner paired tentacles, 

 which also may not be complete, reach to the same somite. The outer paired 

 tentacles do not reach fully to the caudal edge of the peristomium. The tenta- 

 cles are all annulate throughout their length, the articles all being short and 

 relatively broad, with the constrictions between them not deep. The articles 

 are more distinct distally than proximad. The ceratophores are short and not 

 thick; from them the antennae widen to about the end of the first third and 

 then narrow strongly distad. 



The peristomium is nearly of the same length as the next three somites 

 together. It is smooth dorsally. The anterior margin above is nearly straight 

 excepting for a shallow median excavation opposite the base of the median 

 tentacle. On each side the anterior margin is slightly notched, and from the 

 notch a short sulcus extends caudad. The lower lip is nearly smooth, except 

 for a few weak transverse sulci. Its anterior margin is widely but not deeply 

 incurved, and is smooth. 



The second somite, which is apodous, is fused with the peristomium laterally, 

 but is distinctly set off dorsally and ventrally. The tentacular cirri are stout 

 at base, strongly narrowing to a point distad; they are short, scarcely extending 

 beyond the anterior margin of the peristomium. Annuli are only veiy vaguely 

 indicated. 



The third and succeeding somites, which bear parapodia, are regular and 

 wholly undivided. The third is longer than the second, the others increasing in 

 length to the sixth inclusive, after which a number become shorter before the 

 ordinary length is again resumed. At the widest part of the type, or near the 

 seventieth somite, the somites are about nine times wider than long. Dorsally 

 the somites are moderately convexly arched, the arch not being high. From 

 the eighth somite caudad there is a median longitudinal depression, or furrow, 



