48 AUSTRALIAN MALACOSTEACA. 



small tubercle at the external orbital angle. Antero-lateral 

 borders very long, regularly curved, divided into six teeth which 

 are prominent, rounded, and connected together by a finely 

 granular line ; the first smaller than the rest and placed close to 

 the second, the rest sub-equal and regularly disposed. Posterior 

 borders concave and finely granulated. Chelipedes sub-equal, 

 small ; hands rugose, with a tew large rounded tubercles above, 

 and longitudinal rows of granules externally ; fingers granular, 

 black, the black colour extending on to the hand ; carpus 

 embossed and granular ; merus granular on its upper border. 

 Ambulatory legs tuberculated and granular. [A. M.-Edw.'] 



Cape Grenville (Macleay Museum). 



76. Euxanthus maculatus. 



Euxanthus maculatus, Haswell, Proc. Linn. Soe. X.S.W., 

 Vol. vi. 



Surface strongly embossed, the bosses prominent, rugose or 

 punctate. Front deflexed, bilobed. Supra-ciliary border very 

 thick. Anterior half of antero-lateral border entire, posterior 

 half with three indistinct teeth. Chelipedes very rugose exter- 

 nally, hand with longitudinal rows of pits on its outer surface. 

 Ambulatory legs granular. Colour light red with darker blotches. 



Darnley Island, Torres Straits (Macleay Museum). 



77. Euxanthus mammillatus. 



Cancer mammillatus, M.-Edw., Hist. Xat. Crust., i., p. 37G. 



Melissa mammillata, Strahl, Archiv fur Xatur., 1861, p. 103. 



Euxanthus mammillatus, A. M.-Edw., Xouv. Arch, du Mus., 

 t. i., p. 292, pi. xv., figs. 2, 2 a, 2 b. 



Carapace broad, dilated, covered with smooth and prominent 

 elevations. Front prominent, Antero-lateral borders long and 

 arched, divided into irregular lobes, which can be set down as 

 six in number; the three first are rather formed by undulations 

 of the border ; the fourth is dentiform and prominent, the fifth 

 is not prominent and often appears as two lobes ; the sixth is 

 dentiform and conspicuous. Postero-lateral borders concave. 



