434 ON THE AUSTRALIAN BRACHYURA OXYRHYNCHA, 



rounded tubercles ; hepatic regions with a rounded transverse 

 ridge. Front deeply incised. Lateral border with a low angular 

 elevation behind the eye. Anterior limbs slightly longer than 

 the carapace ; hand dilated in the male ; second pair of legs about 

 twice as long as the carapace, the meros, carpus and propodos 

 stout ; posterior legs more slender than the second pair, about 

 one and a-half times the length of the carapace. Length three- 

 fifths of an inch. 



Hal. Port Jackson (very common) ; Cape Grenville (" Chevert" 

 Exped.) 



This species differs from its very near ally 0. neptumus of Adams 

 and White, which it closely resembles in the form and proportions 

 of the limbs, chiefly in having the front rather less deeply incised, 

 and in the presence of a slight projection on the lateral border 

 of the carapace. 



Genus Halimus, Latr. 



7. Halimus tumidus, Dana. 



Halimus tumidus, Dana, U.S. Explor. Exped., Crust., L, p. 165 ; Hess, Beitrage 

 zur Kenntniss der Decapoden Krebse Ost Australiens, Arch iv fur Nat. 1865, 

 p. 130. 



Hob. Sydney (Dana ; Australian Museum). 



8. Halimus spinosus, Hess. 



Halimus spinosus, Hess, Archiv fur Nat. 1865, p. 129, pi. vi., fig. 1. 

 Halimus truncatipes, (?) Miers, Ann. and Mag . Nat. Hist. (5) vol. iv.,p. 3. 

 Hab. Sydney. 



I have little doubt that a specimen in Mr. Macleay's collection 

 and others in the Australian Museum — all from Port Jackson — 

 belong to this species ; they have the square truncate terminal 

 joints of the ambulatory legs described by Mr. Miers as 

 distinguishing his H. trunicatipes, and otherwise exactly conform 

 to his description of that species. 



