I9I7.] 



S. Kemp : Notes on Crustacea Decapoda. 



261 



stouter than the walking legs. The merus is without teeth and 

 the chela, though the palm is somewhat swollen, is comparatively- 

 long and slender. The fingers when closed meet throughout their 

 length and are armed from base to apex with a regular series of 

 5 or 6 teeth. 



The walking legs are slender; those of the second pair are 

 about twice the length of the carapace and rostrum. The merus 

 in each pair ends bluntly. The dactylus is long, slender and very 

 strongly curved ; the apex is finely pointed and on the posterior 

 margin there are a number of exceptionally large recurved teeth. 

 In the adult female there are 8 or 9 such teeth, distributed 



Fig. lo.—Rhynchoplax exigitiis, sp. nov. 



along the whole length of the dactylus; in smaller specimens they 

 are less numerous — sometimes only 3 — and occur only in the distal 

 half. 



The abdomen of the male is similar to that of R. demeloi. 

 The 3rd, 4th and 5th segments form a single piece; the ultimate 

 segment is triangular and a little broader than long. 



The species is described from ten specimens, most of which 

 are exceedingly small. The adult female, which appears to have 

 been captured soon after the eggs were discharged, is only 34 mm. 

 in length from the tip of the rostrum to the hinder part of the 

 carapace. The largest male, similarh^ measured, is only 2*8 mm. 

 in length. 



