24 CRUSTACEA FROM PORT CURTIS DISTRICT, QUEENSLAND, 



Tribe OXYSTOMA. 



Family CALAPPID^E. 



Calappa hepatica (Linn.). 



1767. Linn., Syst. Nat., ed. xii. Vol.i. pt.ii. 1048. 

 1896. Alcock, Journ. Asiatic Soc. Bengal, lxv. (2) p. 14 2. 

 Mast Head Island; on sandy flats within the lagoon. 



Family LEUCOSIID.E. 



Nursia sinuata Miers. 



1877 Miers, Trans. Linn. Soc. London, (2) Zool. i. p. 239, 

 (figured by Bell, op. cit. Zool. xxi. 18, pi. xxxiv. fig. 4, 

 as iT. plicatus). 



We have a good series taken by Dr. Pulleine at Rat Island. 



The note given by Miers under the species N. plicatus (loc. cit. 

 p. 240) is by no means clear, but it appears to us to be intended 

 to convey that Bell, in figuring that species, had inadvertently 

 taken a specimen to which his description did not apply; that 

 this figure in consequence represents a new species, to which on 

 page 239 he (Miers) has given the name of N. sinuata. 



The references given by Haswell in the ' Catalogue of 

 Australian Crustacea,' spp.244 and 245, appear to be reversed. 



Oreophorus frontalis Miers. 



1884. Miers, Zool. H.M.S. "Alert," p.254, pi. xxvi. fig.B. 



Several specimens were dredged off Mast Head Island in 1 7-20 

 fathoms. 



Cryptocnemus crenulatus n.sp. (Plate ii. figs.2, 2a). 



Surface everywhere both dorsally and ventrally quite smooth 

 and carrying a high polish. Colour ivory white. 



Carapace subpentagonal, broader than long. The margins are 

 turned upwards, giving their dorsal surface a concave appearance. 

 An ill-defined ridge runs backwards from the frontal region, but 

 becomes lost before it reaches the posterior margin. The frontal 

 region is prominent, pointed upwards, and terminates in an 

 obtuse point — its margin is minutely crenulated. 



