54 Some Crustacea of Natal 
it to the Atelecyclide (Tr. Linn. Soc. London, ser. 2, vol. xiv, p. 211). 
Alcock, in defining the genus, says that the sternum is narrow, but 
he does not appear to have seen the type species, to which such a 
statement is surely inapplicable. 
KRAUSSIA RUGULOSUS (Krauss). 
1843. Platyonichus rugulosus, Krauss, Sidafrik. Crust., p. 26, pl. 1, 
figs. 5, a-d. 
1852. Kraussia rugulosa, Dana, U.S. Expl. Exp., vol. xiii, pp. 301, 
302; 1855, pl. 19, figs. laf. 
1887. XK. r., de Man, Arch. Naturg., vol. liii, p. 343, pl. 14, fig. 2. 
1906. XK. r., Rathbun, U.S. Fish. Comm. for 1903, p. 875. 
1910. K. r., Stebbing, Ann. 8. Afr. Mus., vol. vi, p. 310. 
A male specimen, with carapace 15 mm. broad and between 12 and 
13 mm. long, was taken by Mr. Bell Marley at Durban Bluff. He 
says that it ‘“ burrows in sand quickly under rocks and stones.” The 
correspondence of the teeth on front and sides and the scale-like 
markings on the back of the carapace with the figures and descriptions 
above cited make the identification of this apparently rare species 
secure. 
TrinE CATOMETOPA. 
Famity OCYPODID A. 
Genus EUPLAX, Milne Edwards. 
1852. Hupliax, Milne Edwards, Ann. Sc. Nat. ser. 3, vol. xviii, p. 160. 
1858. Cheenostoma, Stimpson, Pr. Ac. Philad., vol. x, p. 97 (43). 
1886. Huplax, Miers, ‘“ Challenger” Brachyura, p. 251. 
1887, #., de Man, J. Linn. Soc. London, vol. xxii, no. 137, p. 125. 
1907. Chenostoma, Stimpson, Smithson. Misc. Collections, vol. xlix, 
pode 
In establishing the genus, Milne Edwards identifies the third 
maxillipeds with those of Macrophthalmus, while de Man, in Arch. 
Naturg., vol. li, p. 353, says that Huplaw is distinguished from 
Macrophthalmus by having the merus in these maxillipeds only a 
little smaller than the ischium and almost as long as broad. Stimpson 
distinguishes his Chenostoma from de Haan’s Cleistostoma, because of 
the gap between the pair of third maxillipeds. 
