G4 AUSTRALIAN MALACOSTRACA. 



logs unequal and rugose ; larger hand as it were corroded 

 externally, smaller nearly smooth. Ambulatory legs tomentose. 



Poi*t Denison, etc. Found also in the Indian Archipelago 

 and New Caledonia. 



107. Ozius guttatus. A.M. 



Ozius guttatus, M.-Edw., Hist. Nat. Crust., t. i., p. 40G ; 

 A. M.-Edw., Nouv. Arch, du Mus., t, ix., p. 239, pi. xi., fig. 1. 



Carapace oval, little convex, smooth above. A transverse 

 slightly granular line extending from the fourth lateral tooth, 

 and directed towards the gastric region. Gastric region traversed 

 longitudinally by two shallow grooves which limit the urogastrie 

 lobe. Antero- lateral borders divided into five dentiform lobes, 

 which are not very prominent, the last much the smallest and 

 sometimes absent. Eront slightly bi-marginated and divided 

 into four flattened obtuse and deflexed teeth, separated by broad 

 clefts. Anterior legs thick and nearly smooth, Ambulatory 

 legs tomentose towards their extremity. 



Port Denison ; Port Curtis. 



108. Ozius sp. A.M. 



Carapace oval, nearly smooth, slightly granular anteriorly. 

 Eront obscurely four-lobed. Anterolateral margins almost 

 entire, divided by three very obscure fissures. Anterior legs 

 unequal, the larger hand smooth, swollen, mobile finger with a 

 large rounded tooth at the base, immobile finger with two larger 

 rounded and several smaller ones ; smaller hand slightly rough- 

 ened externally, fingers slender, armed with a few minute acute 

 teeth. Breadth of carapace 15/lGths inch ; length 9/16ths inch. 



Port Denison. 



This species resembles O. frontalis of Milne-Edwards, but 

 there is no transverse groove on the front besides that which 

 separates the two margins characteristic of the genus. 



Genus PiLUMNUs, Leach. 



Carapace thick, convex, slightly broader than long, front 

 inclined. Antero-lateral margin shorter than the postero-lateral, 

 dentate. Orbits often denticulated. Basal joint of the external 

 antenna? short, not quite reaching to the front, flagcllum entering 



