382 Mr. E. J. Miers on Malaysian Crustacea. 



men I have examinad, has been broken off, and that the 

 genus, although presenting greater affinities in its external 

 characters to JS T €jihrops } is in reality more nearly allied to Ho- 

 marus. 



C AMIDE A. 



Atya moluccensis. (PI. XV. figs. 3, 4.) 



? Atya moluccensis, De Haan, Faun. Japon. Cr. p. 186 (1849). 

 Atya armata, A. M. -Edwards, Ann. Soc. Entoni. France (ser. 4), iv. 

 p. 149, pi. iii. fig. 3 (1864). 



Java (an adult male) ; Batjan (an imperfect example) ; 

 Bali (two females with ova) ; Celebes, Macassar (an adult 

 female with ova). 



In these specimens the rostrum is slender, acute, and nar- 

 rowing to its distal end. In the adult male from Java (which 

 agrees excellently with A. M. -Edwards's description and 

 figure of A. armata) the third legs are considerably dilated, 

 and the merus is armed below with a strong spine placed 

 at some distance from the distal end of the joint. In adult 

 males from the Samoa Islands of a closely allied species (pro- 

 bably A. spinipes of Newport), the rostrum is less acuminate, 

 and appears in a lateral view more rounded toward the distal 

 end, and the strong spine of the merus of the third legs 

 is placed quite close to the distal end of the joint (see the 

 figure, PI. XV. figs. 5, 6). The types both of A. spinipes 

 and of A. pilipes, Newport, are small and in bad condition ; 

 and it is probable that they are not specifically distinct. It is 

 remarkable that the New-Caledonian A. armata should be 

 identical with (or, at all events, much more nearly allied to) 

 the Malaysian rather than the Samoan species. Two other 

 forms described by A. M. -Edwards from New Caledonia, A. 

 robusta and A. margaritacea, are distinguished by the form 

 of the rostrum, which is armed at base with two ridges ending 

 in short spines. 



The true habitat of A. pilipes (as I have elsewhere noted) 

 is Upolu, in the Samoa Islands, not New Zealand (Cat. New- 

 Zeal. Crust, p. 79, 1876). 



Palcemon carcinus, Fabr. 



Java (an adult and full-grown male) ; Bali (an adult and a 

 much smaller male). 



In the smaller example the rostrum, although nearly of the 

 same form, is less strongly sinuated, and the teeth are some- 

 what less numerous (f ). In the larger examples the rostra 

 are respectively \%- and |§~ toothed. In these examples the ter- 

 minal postabdominal segment is less narrowed and acute at 



