MARINE CRUSTACEANS. 263 



in that the basal joint of the antenna does not fill the orbital gap, though the flagellum is 

 not placed at its apex, a small process extending inwards towards the orbit as shown in Dana's 

 figure {U. S. Expl. Expd. Crust. Atlas, PI. xii. figs, lie, 11 d). 



Taken on the reef in Male, Goifurfehendu and South Mahlos Atolls. 



Genus Etisodes Dana, 1851. 



75. Etisodes anaglyptus (H. M.-Edw.), 1884. Alcock, iii. p. 133. 



Taken on the reef in Goifurfehendu Atoll and dredged in 3 — 9 fathoms in Minikoi lagoon. 



76. Etisodes electra (Hbst.), 1801. Alcock, in. p. 133. 



In young specimens the lobes of the front are shorter, and not so equal as in old individuals, 

 the middle lobes being distinctly broader than the outer. I doubt the specific distinctness of 

 this form from E. anaglypta. 



Taken on reefs and in lagoons in Male, Goifurfehendu, Miladumadulu, Fadifolu and Mini- 

 koi Atolls. 



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



77. Etisus laevimanus Randall, 1839. Alcock, iii. p. 131. 



Alcock quotes only figures 1 a — b on Dana's plate X., seeming thus to exclude figs. 1 f — h, 

 which Dana labels as young females of the same species. My specimen, a female, exactly re- 

 sembles these latter figures. 



Taken on the reef at Hulule, Male Atoll. 



Subfamily Eriphiinae. 



Genus Domecia Eyd. and Soul., 1841. 



78. Domecia hispida Eyd. and Soul, 1841 var. ? (Fig. 41 e.) See Alcock, iii. p. 230. 



My specimens agree with the figures and descriptions of B. hispida, but have no hairs on 

 the carapace. 



This is a true coral crab, like Trapezia and Melia, and lives among the branches of living 

 corals. It was taken on the reef at Goidu, Goifurfehendu Atoll, and seen also in Minikoi. 



Genus Eriphia Latr., 1817. 



79. Eriphia laevimana Latr., 1817. Alcock, iii. p. 214. 



This species, which was taken at Minikoi, lives in holes in the rocks and is rather active 

 in its movements. 



80. Eriphia scabricula Dana, 1852. Alcock, III. p. 216. 



Taken on the reef in Minikoi and Addu Atolls. Lives under stones and in coral stocks. 



Subfamily Trapeziinae. 



This group of little, square-bodied crabs, with a broad front and a smooth, usually polished, 

 cuticle (Figs. 41 f, 56), is very characteristic of the Indopacific region, to which its members 

 G. 34 



