Victorian Deccqwd Crustacea. 7 



This species is not uuconunon in Western Port at moderate 

 depths. It has not been previously figured and the accompanying 

 drawings are taken from a specimen dredged by Mr. C. J. 

 Gabriel off Rhyll. 



It has been shown by Mi.ss M. J. Rathbun^ that the generic 

 name Cycloxanthus to which Haswell referred this crab had 

 been preoccupied and is therefore untenable. She therefore 

 proposed the name Cycloxanthops for the inclusion of the species 

 of the genus known to her. In her re-detinition of this genus, '^ 

 however, she has included certain features more particularly 

 those relating to the front, which is described as being " hori- 

 zontal, produced and divided by a median fissure into two deep 

 lamellate lobes, which are truncated and separated from the 

 internal orbital angles by a deepish notch," and which wis 

 submit exclude the species under consideration. 



C. punctatus, Haswell, it appears to us, would be more 

 properly included in the genus Lioxantho, Alcock.^ Xantho 

 punctatus, M.-Edw., having, however, been transferred to that 

 genus, our species would, if it is to be properly referred here, 

 require a new specific name for which we would propose that of 

 Lioxantho haswelli. 



Tril)e— Cyclomktopa. 



Family — Xanthidae. 



Sub-fa mi 1 y — Pi In ni n inae. 



Pilumnus pilosus, sp. nov. (PI. IV., Figs. 1-4). 



Carapace transverse, flattened, the dorsal anterior portion 

 covered with a dense tomentum, posteriorly less thickly clothed. 

 The frontal and anterior lateral margins carry a long silky fringe 

 which entirely obscures all the marginal and orbital characters ; 

 sparingly tomentose Vjelow. Regions fairly defined. 



After removal of the hairs from the surface it is found to be 

 smooth, the anterior lateral margins are a little shorter than the 



1 Rathbun : Proc. Biolo,ir. Soe. Washiiifrtoii, 1S!)7, \ ol. 11, p. 164. 



2 Ratlil)un : Brachyura and .\Iaciira of Porto llico in the United States. Fish Cor 

 sion Bull, for 1900, vol. 2., p. 27. 



:; .Ak'oik. Journal Asiatic Soc. Bengal, vol. 67 (2), p. 01), 189S. 



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