i2 AUSTRALIAN MALACOSTKACA. 



scarcely sinuous. Anterior legs with the hand very slightly 

 rugose externally, strongly carinated above. Fingers large, 

 excavated. Penultimate joint of the ambulatory legs without 

 prominent crest on its lower border. 



Port Denison, etc. ; common on coral reefs. A widely dis- 

 tributed tropical species. 



66. Atergatis roseus. 

 Carjullus roseus, Ruppell. 



Cancer roseus, Milne- Edwards, Hist. Nat. Crust., t. i., p. 374. 



Aterr/atls roseus, De Haan, Fauna Japonica, Crust., p. 17 ; 

 Heller, Synops. der Crust, des Rothen Meercs, p. 3 ; A. Milne- 

 Edwards, Nouv. Arch, du Mus., t. i., p. 239. 



Carapace strongly convex, without indication of regions. 

 Surface covered with small depressions, more close-set and deeper 

 on the antero-lateral than on the posterior portions. Branchio- 

 cardiac grooves strongly marked. Antero-lateral borders entire 

 and without tubercle or crest at their posterior extremity. Front 

 denexed, its middle lobes scarcely separated and very broad ; the 

 lateral lobes, which form the external orbital angles, very small 

 and much less conspicuous. Hands rugose above and externally. 

 Crests of the ambulatory legs very stong, unequal, and acute. 

 Colour reddish, with the fingers black. [A. M.-Edw.'] 



Darnley Island, Torres Straits (Macleay Museum). 



67. Atergatis latissimus. 



Zozymns latissimus, M.-Edw., Hist. Nat. Crust., i., p. 3S1. 



Aterrjatls latissimus, A. M.-Edw., Nouv. Arch, du Mus., t. i., 

 p. 237, pi. xiv.j fig. 1. 



Aterr/atls sinuatifrons, Adams and White, Zool. of H.M.S. 

 " Samarang," Crust., p. 38. 



Carapace ovoid, extremely broad, rather convex ; antero-lateral 

 border very long, margined with a lamelliform entire crest which 

 does not end in a tubercle, but curves back sharply on the 

 branchial region. Median lobes of the front curved and little 

 prominent; anterior legs strong; lingers without crests or 

 canaliculi on the external surface, an elevated crest on both the 

 upper ami lower borders of the ambulatory legs. [_M.-E.~] 



