364 MK. J. E. HENDERSON — A CONTRIBUTION 



Ceylon {Haly). 



Distrihution. Mauritius, Nicobars, Mergui, New Caledonia. 



Genus Epixanthus, Heller. 



77. Epixanthus frontalis (Milne-Edw.). 



E. frontalis (Milne-Edw.), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. ix. p. .241 (187.3). 



Ceylon, an adult male {Nevill) ; Nicobars, tbree specimens {Day). 



The Ceylon male is 22*5 mm. long and 38 mm. broad; a female with ova from the 

 Nicobars is 13 mm. long and 21 mm. broad. The right chelipede is greatly enlarged in 

 the male, and a wide hiatus appears between the iingers ; the fingers of the left chelipede 

 are slender, incurved, and in contact throughout their length. 



Distribution. From the Red Sea and E. Africa to Japan and New Caledonia. 



78. Epixanthus dentatus (White). 



Panopaus dentatvs (White), Adams & White, ' Samarang ' Crust, p. 41, jil. xi. iig. 1 (1848). 

 Epixanthus dentatus (White), Miers, Ann. Mag. Nat. Hist. ser. 5, vol. v. p. 233 (1880). 

 ( = £". dilatatus, De Man, Panopaus acutidens, Hasw.). 



Nicobars, an adult female {Day). 



The carapace is 27 mm. long and 47 mm. broad, slightly broader proportionately 

 than in either of White's types, but this is perhaps a sexual characteristic. The cheli- 

 pedes, legs, and marginal parts of the carapace are slightly hirsute, while the hairs 

 appear to have been rubbed off in the types. Purplish reticulating lines are present on 

 the surface of the carapace. 



Distribution. Mergui, Philippines, Java, N. Australia. 



Genus Actumnus, Dana. 



79. Actumnus setipeb, (De Haan). 



A. setifer (De Haan), A. Milne-Edv ards, Nonv. Arch. Mus. Hist. Nat. t. i. p. 287, pi. xviii. fig. ^ 

 (1865) ; Miers, ' Alert ' Crust, p. 225 (1884). 



{=A. tomentosus, Dana). 



Muttuwartu Par, a young male {Thurston) ; Gulf of Martaban, three young specimens 



{Oates). 



Distribution. Mauritius, Malay Archipelago, Japan, N., N.E., and W. Australia, New 

 Caledonia, New Hebrides, Tahiti, Pijis. 



80. Actumnus vekkucosus, n. sp. (PI. XXXVI. figs. 15, 16.) 

 Tuticorin, a series of both sexes ; Muttuwartu Par ( Thurston). 



The carapace is very convex, covered with a short brown pubescence, and provided 

 with a series of remarkable granulated lobes. The frontal margin is granulated and 

 four-lobed, the rounded prominent submedian lobes separated by a narrow median fissure, 

 the outer lobes of small size. The antcro-lateral margin has four prominent, subequal, 

 granulated or subspinose lobes, while the postero-lateral margin is smooth and deeply 



