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PROCEEDINGS OF THE NATIONAL MUSEUM 



and (7) lateral carinae, each of which fuses with marginal carina at 

 apex of lateral tooth. 



Outer margin of penultimate segment of uropodal exopod with 

 10-11 broad, flattened, overlapping spines, last not extending to distal 

 margin of rounded distal segment; proximal segment of exopod less 

 than twice length of distal segment; endopod broadly ovate, with 2 

 dorsal longitudinal carinae that do not extend to apex; basal pro- 

 longation with outer spine longer than inner but not extending past 

 apex of endopod. 



Color. — In preservative, ventral surface and lateral portions of 

 body darker than upper; dactylus of claw orange; antennal scale with 

 distal black spot; anterior portions of carapace with irregular oval 

 areas outlined in dark pigment, especially on lateral plates; basal 

 segment of uropods yellow, distal segments black, apices of movable 

 spines pink. Although much of the color and pattern fade in pre- 

 servative, the oval spots on the carapace may persist for sometime. 



Size.— Males, TL 53.9-171.0 mm; females, TL 22.8-144.0 mm. 



Measurements and indices for selected specimens of 0. scyllarus 

 (Linnaeus) are as follows: 



Males 



