AUSTRALIAN MALACOSTRACA. 131 



Genus Arcania, Leach. 

 Carapace sub-globular, armed with numerous spines or elevated 

 tubercles. Orbits opening upwards and outwards. Antennulary 

 fossa? longitudinal. External maxillipedes with the palp straight, 

 linear, the internal apex emarginate-truncate ; the inner ramus 

 gradually pointed. Anterior legs very slender. Abdomen of 

 the male lanceolate, with the third to the sixth or fifth 

 coalescent. [B.~\ 



250. Arcania novem-spinosa. 



Arcania novem-spinosa, Adams and White, Zoology of the 

 " Samarang," Crustacea, p. 5G, pi. xiii., fig. 1 ; Bell, /. c, p. 309 ; 

 Haswell, 1. c, p. 58. 



Carapace smooth, granular, antero-lateral margins with two 

 spines ; postero-lateral margins with two spines ; posterior 

 border with one spine. [A. Sf W.~\ 



Darnley Island ; Cape Grenville ; Cape York (Macleay 

 Museum). 



251. Arcania granulosa. 



Arcania granulosa, Miers, 1. c, p. 210, pi. xxxviii., fig. 29 ; 

 Haswell, 1. c, p. 58. 



Carapace granular, sub-globose, without tubercles, borders 

 armed with ten short acute spines ; intestinal region with a 

 single spine. 



Moreton Bay (Brit. Museum). 



252. Arcania pulcherrima. 



Arcania piilcherrima, Haswell, 1. c, p. 58, pi. vi., fig. 1. 



Carapace globose, rather broader than long, covered with 

 vertically elongated granules, and armed above with thirteen 

 tubercles or short spines which are covered with granules similar 

 to those on the rest of the carapace. Lateral border armed with 

 six spines, lateral pair much the longest, hardly appreciably 

 flattened and slightly curved upwards ; covered, in common with 

 the others, with granules like those on the surface of the 

 carapace. Front prominent, emarginate. Anterior limbs more 

 than twice as long as the carapace ; arm slender and tuberculated ; 

 hand smooth, slightly swollen at the base, and tapering towards 



