16 Some Crustacea of Natal 



not quite reaching the tips. The telson is acutely triangular, longer 

 than its breadth at the base. Greatest breadth of carapace 23 mm., 

 median length 17 mm. 



Locality. Umkomaas, Natal, where the specimen was obtained by 

 Mr. A. L. Be vis, in regard to whom the species is named. 



Family SESARMID^S. 



Genus PARASESARMA, de Man, 1895. 



See Ann. Durban Mus., vol. ii, pt. i, p. 10, 1917, and add Sesarma. 

 Rathbun, U.S. Nat. Mus., Bull. 97, p. 284; 1918. 



Parasesarma catenatus (Ortmann). Plate III. 



1905. Sesarma catenatum, Stebbing, Marine Invest. S. Afr., vol. iv, 



pt. 3, p. 44. 

 1917. Pai-asesarma catenatus, Stebbing, Ann. Durban Mus., vol. ii, 



pt. i, p. 10. 



The figure of the cheliped which Ortmann gives in 1897 inclined 

 me to regard the Durban specimens as a distinct species, but a 

 renewed consideration of his description, which I have already quoted 

 and discussed in 1905, confirms the opinion there adopted. In a 

 specimen from Delagoa Bay, obtained by Mr. K. H. Barnard, the 

 felting is extended to all the ambulatory limbs and prolonged on to 

 the dactyls. The specimen from which the figures are drawn was 

 procured by Mr. D. R. Boyce in Durban Bay. 



Family OCYPODID^E. 



Genus UCA, Leach, 1814. 

 See these Annals, vol. ii, pt. i, p. 14; 1917. 



Uca nitidus (Dana). 



1851. Gelasimus nitidus, Dana, Ac. Sci. Philad., p. 248 (Conspectus, 

 p. 2). 



