PILUMNIDAE. 53 



carapace smooth and the chelipeds coarsely rough ; in the deep median 

 sinus of the front; in the denticulation of the lateral spines; in the lack of 

 prominent spines on the anterior border of the arm. 



The genus Pilodius stands very near Pihunnus and Chlorodopsis ; it has the 

 aspect of a Pilumnus, but the fingers are spoon-shaped instead of pointed ; 

 the carapace is not so much subdivided intoareolets as in Chlorodopsis, where 

 the antero-lateral areolets are exceptionally rough and high. As for the 

 arrangement of antennae and orbits, it does not in Pilodius differ much from 

 some species of Chlorodopsis, although the movable part of the antenna is 

 excluded from the orbit in the typical species of the latter genus. 



Cymo melanodactylus De Haan. 



Cymo melanodactylus Alcock, 1898, 67, 174. 



Fakarava Id., Paumotus ; outer reef; Oct. 12, 1899; 6 <?, 9 9 (4 ovig.). 

 Borabora Id., Society Group; fringing reef; Nov. 7, 1899; 1 <?, 1 juv. 

 Tari-Tari Id.; shore; Jan. 6, 1900; 1 $, 1 ?. 



Cymo quadrilobatus Miers. 

 PI. 1, Fig. 7 



Cymo quadrilobatus Alcock, 189S, 67, 175. 



Funafuti, Ellice Ids. ; reef; Dec. 24, 1899; 1 S, 1 juv. 

 Funafuti, Ellice Ids. ; shore ; Dec. 25, 1899 ; 1 9 ovig. 



OziUS ruguloSUS Stimpson. 

 Ozius rugulosus Stimpson, Proc. Acad. Nat. Sci. Phil., 1857, 9, 34. 

 Nomuka Iki, Tonga Group; shore; Dec. 2, 1899; 2 6\ 



OziUS guttatus Milne Edwards. 



Ozius guttatus Milne Edwards, Hist. Nat. Crust., 1834, 1, 40G. A. Milne Edwards, 

 Nouv. Arch. Mus. Hist. Nat. Paris, 1873,9, 239, pi. 11, fig. 1. 



Tongatabu; shore; Nov. 29, 1899; 1 <?, 1 carapace. 



