183 



The proximal squame of the antennas has both edges serrated and is dorsally 

 traversed by two oblique ridges : the distal squame has its free edge cut into 7 

 teeth, two of which are on the inner margin. 



The legs decrease considerably in stoutness in posterior succession. The 

 2nd pair, which are the longest, are shorter than the carapace. The 4th are 

 shorter than the 3rd, and equal to the 5th in the male, but a little longer than 

 the 5th in the female, in which sex the 5th are almost chelate. In neither sex 

 are any of the propodites particularly broadened or compressed, and in the 4th 

 pair the propodite is not much more than half the length of the merus. 



The abdominal appendages of the female are as in the preceding species. 

 In the young male the appendages of the 2nd abdominal somite are as in the 

 preceding species, and those of the 3rd-5th are biramous with the inner ramus 

 of 4th and 5th short. 



In a female the length of the carapace in the middle line is 26 millim., that 

 of the abdomen 42 millim. 



Colour in life, light rose madder above, white below. 



Gulf of Mauar, off Colombo, 142 to 400 and 180 to 217 fathoms. 



Regd. Nos. — (Types of the species) : — . 



Family Palinuridce, White. 



White, Cat. British Crast., p. 30: Dana, Proc. Acad. Nat. Sci. Philad., 1852. p. 15, and V, S. Expl. Exp. Crast., 

 pt. I., p. 519: Spence Bate, Challenger Crust. JIacrura, p. 74: Stebbing, Hist. Crust., p. 195 : Ortmann in Bronn's 

 Thier Reich (Malacostraoa), p. 1137. 



Carapace subcylindrical (occasionally elongate-cuboidal) with the rostrum 

 either absent or represented by a tooth : anteriorly it is soldered to the epistome 

 on either side, posteriorly its angles are firmly held between the last thoracic 

 epimeron and the 1st abdominal somite. Thoracic sternum broad. 



Abdomen broad, the terga overlapping, the pleura behind the 1st well 

 developed : telson truncated or quadrate, its posterior portion is, like the greater 

 part of the caudal swimmerets, coriaceous or membranous. 



The eyes may be protected by a spine above or below, or both, but are 

 never lodged in true orbits. 



Antennular peduncle elongate, with cylindrical joints, rather weak : the 

 flagella of no great length. 



Antennal peduncle 4-jointed, not dilated, the basal joint merged in the 

 epistome : antennal flagellum long and cylindrical : no antennal scale. 



The 2nd maxilla? and the 1st maxillipeds appear to take a subordinate part 

 in manducation. 



