PROCEEDINGS OF THE NATIONAL. MUSEUM. 



VOL. 65. 



phore, is rather thick, and terminates in a fine filament arising from 

 the abruptly narrowing end of the tentacle. The lateral tentacles 

 are much shorter and more slender than the median, but have ap- 

 proximately the same form. The palps are six to eight times as 

 long as the prostomium and rather heavy. In the specimen they are 

 very much wrinkled, a condition probably a result of the preserva- 

 tion. The tentacular cirri are like the tentacles in form but are 



LAGI3CA CRASSA, NEW SPECIES. F[G. 1, ANTERIOR EnD X 10 ; FiG. 2, PaRAPODIUM X 17 



Fig. 3, Neuropodial SejtaxITO; Fig. 4, Notopodial Seta X 170. 



larger while the dorsal cirri have a similar form and are about as 

 large as the median tentacle. All tentacles and cirri are colorless 

 at the apex, an appearance which in some is heightened by a sub- 

 apical pigment band. The contrast between the pigment band and 

 the colorless apex sometimes makes them look as if the apex were 

 slightly swollen, but this is evidently merely an optical effect. Ex- 

 cept for this colorless apex, the cirri around the prostomium and 

 the palps show traces of a brown color. A similar color appears on 



