100 AUSTRALIAN MALACOSTRACA. 



Planes minutus, List. Crust. Brit. Mus., p. 42 (1847) ; Dana, 

 U.S. Explor. Exped., Crust., i., p. 346 (L852) ; Miers, Cat. Crust. 

 N.Z., p. 39 (1876). 



Carapace smooth and glabrous, a small tooth, which is some- 

 times obliterated, behind the external orbital angle. Anterior 

 legs stout, smooth ; wrist with a small tubercles on its inner side. 

 Ambulatory legs broad, compressed, and thickly dilated above. 



An almost cosmopolitan species. 



Genus Heterograpsus, Lucas. 



Carapace slightly convex and lobate in front, sides slightly 

 arcuate anteriorly, toothed. Front straight or slightly sinuous. 

 External maxillipedes when closed meeting or nearly meeting 

 along their inner margins. Tarsi not spinulous. 



179. Heterograpsus sexdentatus. 



Cyclograpsus sexdentatus, M.-Edw., Hist. Nat. Crust., ii., p. 79 

 (1837) ; White, Dieffenb. New Zealand, ii., p. 266 (1843). 



Hemigrapsus sexdentatus, Dana, U.S. Explor. Exped., Crust., 

 i., p. 348, pi. xxii., fig. 2 (1852). 



Heterograpsus sexdentatus, M.-Edw., Ann. Sci. Nat., xx., 

 p. 192 (1853) ; Miers, Cat. Crust. N.Z., p. 37 (1876). 



Gastric region uneven. Front straight. Lateral margins 

 of the cai-apace granulous, and divided on each side into three 

 teeth, of which the two first are very broad. Orbits directed 

 forwards. External orbital hiatus slightly defined. Legs slender, 

 tarsi thick and short. 



Coasts of New South Wales ? and Victoria ? Found also in 

 New Zealand. 



180. Heterograpsus pallipes. 



Heterograpsus pallipes, M.-Edw., Ann. des Sci. Nat. 3e serie, 

 t. xx., p. 194 (1853). 



Pseudograpsus pallipes, M.-Edw., Hist. Nat. Crust, ii., p. 82 

 (1837). 



Carapace almost square, a little embossed in front; front 

 feebly bilobed. Four longitudinal crests on the external and 

 superior surface of the hands; fingers canaliculated. Legs 



