528 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV. 



Mandibles with well-developed molar, which is margined with 

 slightly curved spines; spine row with four large setse on each man- 

 dible, with a small plumose seta at the base of each spine ; secondary 



Fig. 33. — Graciupes natator. gn^ first gnathopod; ffn>, second gnathopod; md, 



MANDIBLE ; mXu FIRST MAXILLA ; mX*, SECOND MAXILLA ; ill, UPPER LIP. 



Fig. :<4. — Geacilipes natatob. mxp, maxilliped; pi, first per^eopod ; ur and *, cbo- 



POD AND TELSON J ur lt FIRST UROPOD. 



plate well developed and dentate on left mandible, small and narrow 

 on the right; last joint of palp curved, about three-fourths the length 

 of preceding joint, and bearing a few large setse. Inner plate of 



