OKUSTACBA. 225 



One specimen (a male) was obtained at Port Molle, 14 fms. 

 (No. 93) ; in the second collection are an adult female and two 

 smaller specimens from Thursday Island, 3-5 fms. (Nos. 165, 177). 



In many of its characters this species resembles P. vespertilio, 

 but differs in the curious sculpture and less dense hairiness of the 

 carapace, the prominent teeth of the antero-lateral margins, and the 

 existence of distinct teeth on the upper margin of the palm (flg. c). 



In the very remarkable sculpture of the carapace it somewhat 

 resembles P. vermiculaius, A. M.-Edwards *, from New Caledonia ; 

 but in that species the vermiculations are much less numerous, the 

 front is much deflexed and in a continuous line with the upper 

 orbital margin, the teeth of the antero-lateral margins are much 

 more obtuse, &c. 



61. Pilumnus? pngilator? 



? Actumnus pugUator, A. M.-Edwards, Nouv. Arch.- Mus. Hist. Nat. 

 ix. p. 195, pi. vii. flg. 1 (1873) ; Haswdl, Cat. Austr. Crust, p. 72 

 (1882). 



Here is referred, though with some hesitation, a fine male from 

 Port Molle, 14 fms. (No. 93) ; also a male and two females in the 

 British-Museum collection, preserved dry, and dredged by Mr. Mac- 

 gillivray in 17 fathoms between Percy Island and the mainland, on 

 a bottom consisting of coarse sand and shells. M. A. Milne-Edwards 

 says that the regions of the carapace in his unique example (obtained 

 at the island of Lifu) are distinct, whereas in the Australian 

 examples I have before me scarcely any traces of the intervening 

 depressions exist : moreover the form of the seriately disposed 

 tubercles of the outer surface of the chelipedes is very peculiar and 

 characteristic ; these tubercles are separated, indeed, at their bases, 

 but have their heads dUated and in contact with one another, and 

 the heads are also armed (usually on one side only) with laterally 

 projecting spinules. This disposition cannoi; be seen except under a 

 lens of considerable power, and hence may have been unnoticed by 

 M. A. Milne-Edwards. 



Mr. Haswell gives Darnley Island as an additional Australian 

 locality for this species. 



62. Actumnus setifer. 



Cancer (Pilumnus) setifer, De Haan, Faun. Japan., Cr. p. 50, pL iii. 

 fig. 3 (1835). 



Actumnus tomentosus, Dana, Proc. Ac. Nat. Set. Phil. p. 82 (1852); 

 U.S. Explor. Exped. xiii. Cr. i. p. 243, pi. xiv. fig. 2 (1852) ; A. M.- 

 Edwards, Nouv. Arch. Mus. Sist. Nat. i. p. 285 (1865) ; Targioni- 

 Tozetti, Crostacei del Viaggio ddla 'Magenta,' p. 66, pi. ix. figs. 23- 

 24, 26, 29 (1877) ; Haswell, Cat. Austr. Crust, v- 73 (1882). 



Actumnus setifer, A. M.-Edwards, t. c, p. 287, pi xv. flg. 6 (1865) ; 



» Nouv. Arch. Mus. Hist. Nat. ix. p. 247, pi. ix. fig. 6 (1873). 



