1922.] 



S. Kemp : Notes on Crustacea Decapoda. 



265 



Text-fig. 93. — Pontonia anaclwreta, sp. nov. 

 Anterior part of carapace, rostrum and eye. 



The apex of the rostrum is rather blunt in lateral view and is 

 provided with one or two 

 terminal setae (text-fig. 



93)- 



The antennal scale is 

 rather broader, slightly 

 less than twice as long as 

 wide, and the terminal 

 spine does not extend 

 beyond the apex of the 

 lamella (text-fig. 94a). 



The antepenultimate 

 segment of the third maxilliped (text-fig. 946) is little more than 

 twice as long as wide and the proportions of the two ultimate seg- 

 ments are conspicuously 

 different. The penulti- 

 mate segment is about 

 i'7 times as long as wide 

 and is shorter than the 

 ultimate segment. 



The fingers of the first 

 peraeopod arc consider- 

 ably longer than the palm. 

 The second peraeopods 

 do not possess a tooth at 

 the distal end of the lower 

 border of the ischium. 

 The chela of the larger 

 limb (text-fig. 95a) is 

 sharply carinate on the 

 lower side throughout its 

 length and is here thickly 

 fringed with very long se- 

 tae. The dactylus (text- 

 fig. 956) has a large tooth, 

 as in P. okai, but the fixed finger is unarmed in its distal half and 

 bears at the base two bluntly rounded teeth separated by a broad 

 notch. The chela of the smaller limb is fringed with long setae 

 on its lower border. The fingers have inconspicuous teeth at the 

 base, much as in the related species ; their inner margins are, 

 however, concave they gape widely when the claw is closed and 

 their length is almost or quite equal to that of the palm. 



The merus of the last three peraeopods is rather stouter, from 

 5 to 5-5 times as long as broad The dactylus (text-fig. 95c) is 

 broader, from 3 to 3*5 times as long as wide and bears only from 

 4 to 6 spines in addition to the two distal claws. The terminal 

 claw, as in P. okai, is apparently articulated. 



The telson. excluding the terminal spines, is more than twice 

 as long as its basal breadth, but is otherwise closely similar to that 

 of the related species. 



Text-fig. 94. — Pontonia anachoreta, sp. no\ 



a. Antennal scale. 

 h. Third maxilliped. 



