582 MR. L. A. RORRADAILE ON CRUSTACEANS [May 22, 



Cymo melanodactylas, Dana, U.S. Exp]. Exped., Crust, i. p. 225, 

 pi. xiii. fig. 1 (1852) ; Alcock, Journ. As. Soc. Beng. lxvii. 2, i. 

 p. 174 (1898). 



Cymo andreossi/i var. melanodactylus, Miei's, Zool. ' Alert,' p. 557 

 (1884). 



De Haan appears to have named this variety without describing 

 it. 



Funafuti ; one male, one female. 



Rotuma ; one female. 



Genus Xanthias Rathbun, 1897. 



Xanthodes, Dana, Proc. Ac. N. Sci. Philad., May 1852, p. 75 ; 

 Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 156 (1898). 



Xaniho, Ortmann, Zool. Jahrb. vii. Syst. p. 443 (1893), in part. 

 Xanthias, Rathbun, Proc. Biol. Soc. Wash. xi. p. 165 (1897). 



29. Xanthias lamarcki (H. M.-Edw.), 1834. 



Xantho lamarekii, H. M.-Edwards, H. N. Crust, i. p. 391 (1834). 



Xanthodes lamarekii, A. M. -Ed wards, Nouv. Arch. Mus. ix. 

 p. 200, pi. vii. fig. 3 (1873) ; Whitelegge, Mem. Austral. Mus. iii. 

 2, p. 130 (1897) ; Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 157 

 (1898). 



Funafuti ; one female. 



Rotuma ; one male. 



30. Xanthias notatus (Dana), 1852. 



Xanthodes notatus, Dana, Proc. Ac. N. Sci. Philad. 1852, p. 76 ; 

 id. U.S. Expl. Exped., Crust, i. p. 178, pi. viii. fig. 12 (1852) ; 

 Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 158 (1898). 



Rotuma ; one female. 



31. Xanthias parvus, n. sp. (Plate XLI. fig. 5.) 



Diagnosis : " A Xanthias with the carapace minutely granular, 

 clearly delimited into the areas characteristic of the genus ; the 

 antero-lateral edge on each side with four teeth, of which the first 

 two are very low and blunt and the last two somewhat sharper; 

 the front fairly straight, rather deeply notched in the middle line, 

 and separated at its outer ends by shallow notches from the 

 swollen orbital rims; chelipeds unequal, unlike, the larger with 

 the hand more swollen and the fingers less gaping than the smaller, 

 the wrist in both irregularly and coarsely rugose ; the hand covered 

 above and outside with fairly sharp conical tubercles, smooth 

 below and inside ; the cutting-edges of the fingers close set with 

 bluntish rounded teeth, which in the large hand almost entirely 

 fill up the gap between the fingers, but in the smaller leave a space 

 towards the base of the fingers, the outside of the fingers grooved ; 

 the walking-legs stout, with a strong fringe of hairs on the upper 

 edge, the last three joints hairy on the outside, the dactylopodite 



