AUSTRALIAN" MALACOSTRACA. 49 



Grenus Xanthodes, Dana. 



Foi*m of carapace approaching that of Pilumnus and Eriphia, 

 not much deflexed in front, depressed, not dilated at the sides ; 

 antero-lateral border longer than the postero-lateral ; posterior 

 region of the carapace flat. Orbits not interrupted by an 

 external hiatus. Basal joint of the external antenna? short, 

 reaching the front only through the intermediation of a frontal 

 process. Abdomen of the male five-jointed. 



78. Xanthodes notatus. A.M. 



Xanthodes notatus, Dana, U. S. Explor. Exped., Crust., i., 

 p. 178, pi. viii., fig. 12. 



Carapace anteriorly neat areolate, the areolets flat with abrupt 

 sulci between, and surface nearly smooth or very minutely erose ; 

 front nearly straight, emarginate, antero-lateral margin 5-toothed ; 

 first tooth nearly obsolete, second and third tuberculiform, 

 fourth and fifth acute spiniform. Anterior feet quite unequal, 

 larger hand and carpus small tuberculate, hand smooth above, 

 shining, smaller hand and carpus densely armed with spines. 

 Eight posterior legs hirsute, third joint above denticulate. [_D.] 



Port Jackson. (?) Found also at the Society and Sandwich 

 Islands. 



The specimen which I refer to this species has the spines of 

 the smaller hand shorter than in Dana's figure, and the upper 

 surface of the larger wrist and hand with much fewer tubercles. 

 The fingers of both hands are blackish brown the dark colour 

 not extending on the palm. 



79. Xanthodes atromanus. Plate i., fig. 1. A.M. 



Xantliodes atromanus, Haswell, Proc. Linn. Soc. N.S.W., 

 Vol. vi. 



Allied to the preceding ; distinguished from it mainly by having 

 a prominent triangular tooth at the inner angle of "the lower 

 orbital border ; the hands not very unequal, the wrist of both 

 slightly tuberculate externally, and with two pointed tubercles 

 internally ; the hands with a deep longitudinal groove on the 

 outer surface near the upper border, the larger hand with two 

 and the smaller with three longitudinal rows of tubercles below 



D 



