40 CRUSTACEA FROM PORT CURTIS DISTRICT, QUEENSLAND, 



varies greatly, as does that of the sides of the carapace. The 

 specimens taken by the "Alert"* at Thursday Island are, 

 doubtless, this species. 



It is significant that P. quadrilobata Miers, f a species 

 described from a unique specimen and one which has not since been 

 retaken, was collected at the same time and place as specimens 

 in the Australian Museum from Port Denison, which indisput- 

 ably belong to P. serratifrons. The differences in the two species 

 occur only in the elongation of the body and in the prominence 

 and armature of the front, circumstances which render it possible 

 that Miers' species represents only an abnormal specimen of that 

 under consideration. 



PORCELLANA DISPAB Stimp. 



1858. Stimpson, Proc. Acad. Nat. Sci. Philad. Vol.x. p. 297. 

 1884. Miers, Zool. H.M.S " Alert," p.275, pl.xxx. fig.c. 



A fair series of specimens was dredged in Port Curtis, but all 

 were much smaller than those usually found in the cooler waters 

 of Port Jackson, where the species is very common. 



Pachycheles sculptus (M.Edw.). (Plate ii. fig.l). 



1837. Porcellana sculpta H.M.Edwards, Hist. Nat. Crust, ii. p. 253, 

 1852. ,, „ Dana, U. S. Explor. Exped. Crust, i. 



p. 41 2. pl.xxvi. fig.2. 

 1 897 . Pachycheles sculptus Ortmann, Zool. Jahrb. Syst. x. p. 294 

 (ubi syn.). 



Common under stones on the reef at Mast Head Island. 

 There are specimens in the Australian Museum from Cabbage 

 Tree Bay near Sydney. 



De Man J has expressed the opinion that the species P. pul- 

 chella\\ Hasw., was incorrectly separated from the above. A 

 reference to the type of that species in the Australian Museum and 



* Miers, Zool. H.M.S. "Alert," p.277, 1884. 

 t Miers, loc. cit. p.276, pl.xxx. fig.D. 

 % De Man, Journ. Linn. Soe. Lond. Zool. xxii. p. 219, 1888. 

 HHaswell, Proc. Linn. Soc. N.S. Wales, vi. p.75S, 1882. 



