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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV 1. 



The maxillipeds have the second, third, and fourth articles of the 

 palp produced into lobes or processes. The mandibles have no mas- 

 ticatory process; the cutting edge is provided with four large blunt 



Pig. 2. — Ancinus depressos. 

 Maxilliped. X 77J. 



Fig. 3. — Ancinus depkessus. Man- 

 dible. X 77J. 



teeth; below the cutting edge is a process provided at the tip with 

 three teeth ; below this process is a long spine. 



The first two segments of the thorax appear to be a little shorter 

 than those following, which are subequal in length. All are of nearly 



Fig. 4. — Ancinus depressus. First 

 pair of legs op female. x 77j. 



Fig. 5. — -A n c i N u s 

 DEPKESSUS. First 



AND SECOND PLEO- 



POD. X 41. 



Fig. 6. — A n c i n u s 

 DEPRESSUS. Third 

 PLEOPOD. X 41. 



equal width, the sides of the body being almost parallel. With the 

 exception of the first, the epimera of all the segments are distinctly 

 separated ; they are broad, quadrangular plates with the post-lateral 



