4G AUSTHALTAX MALACOSTRACA. 



of hand spinulous, spinules larger and fewer than in the tomen- 

 tosus. Outer maxillipedes naked, smooth. Abdomen sparsely 

 pubescent. \_Dana.~\ 



Port Jackson. 



The specimens which I refer to this species agree with Dana's 

 description in all points, save that the mobile finger has only a 

 few tubercles at its base and no spinules. The shape of the 

 cardiac areolet is a little different from the figure, being more 

 deeply divided in the centre. 



73. Actsea Peronii. A.M. 



Xantlto Peronii, Milne-Edwards, Hist. Nat. Crust., i., p. 392. 



Xnntho spinosus, Hess, Arehiv Mr Naturg., xxxi., p. 132, 

 pi. vi., fig. 3. 



Carapace slightly convex, covered on the anterior portion 

 with small flattened tubercles, wrinkled behind. The separate 

 regions well defined, The antero-lateral border divided into 

 four large quadrangular lobes. Front deflexed, prominent, 

 almost bilobed, rounded. Legs depressed, thin, the penultimate 

 and ante-penultimate pairs with long spines on the upper border, 

 the dactyli very acute and hardly curved. Arm short. Carpus 

 and hand with very large tubercles on the surface. Hand as 

 long as broad. Fingers provided with a longitudinal furrow on 

 the upper surface. Colour bright red ; hand, and part of the 

 carpus, white ; fingers brown. [ Hess.~\ 



Port Jackson ; Port Stephens. 



This species, not uncommon in Port Jackson, seems to be the 

 Xnntho Peronii of Milne-Edwards. 



G-enus Ltomera, Dana. 



Carapace very broad ; regions indicated by shallow grooves ; 

 antero-lateral borders thick. Orbits small and deep. Basal 

 joint of the external antenna 1 only joining the process from the 

 front by its internal angle. Third joint of the external maxilli- 

 pedes sub-rectangular, the inner border longer than the outer. 

 Fingers usually spoon-excavate ; hand not cristate. Ambulatory 

 legs rounded above. [A.M.-E.] 



