American Species of Palicus. 99 



Lateral teeth two, subequal in length, acute, and directed outward and 

 only slightly forward. Median suborbital lobe truncate. Lobe at angle 

 of buccal cavity very large and produced far beyond the inner lobe of the 

 inferior orbital margin. Crest above posterior margin sinuous, broken 

 into seven irregular scallops. 



Crests on the first two abdominal segments of the $ trilobate and sub- 

 parallel in a dorsal view, that of the first the wider. Third segment with 

 a lobe on each side of the middle, partially visible in a dorsal view. Crest 

 on the fifth sternal segment or that between the bases of the third ambu 

 latory legs about half as wide as the second abdominal segment; its pos 

 terior margin is sinuous. 



Chelipeds unequal in the male ; the right one rather small ; manus 

 bicristate above, outer surface granulate, lower margin convex. Pollex 

 slightly deflexed ; its length not equal to the width of the manus. Merus 

 of first ambulatory terminating in a large blunt tooth ; meri of the second 

 and third armed on the anterior margin with 4 or 5 curving, spiniform 

 teeth ; terminal tooth large, subacute ; posterior margin spinulous ; upper 

 surface with squamose granules. Lobes on the anterior margin of the 

 carpal joints small but distinct. Dactyli slender, posterior margin concave. 



Dim elisions. $ : Length, 4.8 mm.; width, 5.5; length of second ambu 

 latory (approximate), 11.6 ; merus of same, 3.2 ; carpus, 2 ; propodus, 2.6 ; 

 dactylus, 2.8. 



Type. A single male was taken by the 'Albatross ' at station 2651, lat. 

 24 2' N., long. 77 12' 45" W., 97 fathoms, east of Andros Island, Ba 

 hamas, in Tongue of Ocean. U. S. Nat. Mus., No. 11394. 



