MARINE CRUSTACEANS. 259 



Subfamily Carpilinae. 



Genus Phymodius A. M.-Edw., 1863. 



5.5. Phymodius ungulatus (H. M.-Edw.), 1834. 



Phymodius ungulatus, Ortmann, Zool. Jahrb. Syst. vii. p. 464 (1893); Alcock, ill. p. 162 

 (1898). 



Phymodius monticulosus, Alcock, ill. p. 163 (1898). 



I am quite unable to distinguish between these species, or to assign my specimens to 

 either of them rather than to the other. All the characters vary, as it seems independently, 

 and the descriptions given by several authors do not always agree. Until examination of a 

 long series of full-gi-own males have shown whether there exist varieties corresponding to the 

 above two names, and if so exactly in what points they differ, I prefer to follow Ortmann in 

 joining the species absolutely, without keeping varietal names. 



These crabs, which were taken on the reef in Hulule and Goifurfehendu Atolls and in 

 lagoons in 3 — 7 fathoms in Minikoi and Miladumadulu Atolls, live in coral stocks and under 

 stones. 



56. Phymodius sculptus (A. M.-Edw.), 1873. Alcock, iii. p. 164. 

 Taken on the reef in Male and Goifurfehendu Atolls. 



Genus Chlorodius H. M.-Edw., 1834. 

 The members of this genus are often found in coral stocks. 



57. Chlorodius laevissimus Dana, 1852. Alcock, iii. p. 161. 



In one specimen the teeth on the inner side of the fingers are wanting in the small chela 

 and obsolescent in the large. The colour of many specimens is yellow, rather than white. 



Taken on the reef in Goidu and Fadifolu Atolls, and dredged in South Nilandu and 

 Mahlos Atolls in 22—25 fathoms. 



58. Chlorodius barbatus Borradaile, 1900. (Fig. 41 D.) 



Chlorodius barbatus, Borradaile, Proc. Zool. Soc. 1900, p. 587, pi. xli. fig. 4 (1900). 



Taken on the reef, and in lagoons down to 9 fathoms, in Minikoi, Goifurfehendu, and 

 Miladumadulu Atolls. 



59. Chlorodius niger (Forsk.), 1775. Alcock, iii. p. 160. 



Taken in Male, Fadifolu, Goifurfehendu, Felidu, North Male, and Minikoi Atolls on the 

 reef and in lagoons down to 25 fathoms. 



Genus Euaanthus Dana, 1851. 



60. Euxanthus exsculptus (Hbst.), 1790; var. rugvsus Miers 1884. (Fig. 41 C.) 

 Euxanthus melissa, Alcock, in. p. 110. 



Since Miers speaks of a specimen of some size, it is likely that this is at least a variety, 



