no. 1136. OBSERVATIONS ON THE ASTACIDJS— FAXON. 677 



CHERAPS QUINQUE-CARINATUS (Gray). 



Astacus quinque-carinatus Gray, Eyre's Journals of Expeditions of Discovery 

 into Central Australia, I, p. 410, pi. in, fig. 3, 1845; List. Crust. Brit. Mus., 

 p. 72, 1847 (no description). — Erichson, Arch. f. Naturgesch., 12ter Jahrg., 

 I, p. 376, 1846 (after Gray).— von Martens, Monatsber. Akad. Wissensch. 

 Berlin, 1868, p. 616 (after Gray). 



Astacopsis quinque-carinatus Haswell, Cat. Australian Stalk- and Sessile-eyed 

 Crust., p. 176, 1882 (after Gray). 



Habitat. — Western Australia, near Swan River (Gray). 



CHERAPS QUADRICARINATUS (von Martens). 



Astacus quadricarinatus von Martens, Monatsber. Akad. Wissensch. Berlin, 1868, 



p. 617. 

 Astacopsis quadricarinatus Haswell, Cat. Australian Stalk- and Sessile-eyed 



Crust., p. 177, 1882 (after von Martens). 



Habitat. — Cape York, Australia (von Martens). Type in Berlin 

 Zoological Museum, No. 2972 (von Martens). 



Genus PARANEPHROPS White. 



Paraneplirops White, Gray's Zoolog. MiscelL, No. 2, p. 79, 1842. 

 Type, Paraneplirops planifrons White. 



Rostrum triangular, upper surface plane or subplane, margins raised 

 and armed with spines or teeth. Carapace more or less spiny or tuber- 

 culate (at least in large individuals). Chela) more or less armed with 

 spines and teeth. Form astacoid. Branchial formula: 



ARTHROBRANCHLaS . 



Somite. Podobranchi^:. . Pleurobranchije. 



Anterior. Posterior. 



VII. . . . 0(epr) . . . . i . . . . . = (ep r) 



VIII. ...1....1....0....0 =2 



IX. ... 1 .... 1 .... 1 .... =3 



X. ... 1 .... 1 .... 1 .... =3 



XI. ... 1 .... 1 .... 1 .... 1 =4 



XII. ... 1 .... 1 .... 1 .... 1 =4 



XIII. ... 1 .... 1 .... r .... 1 = 3+r 



XIV. ...0....0....0....1 =1 



6+epr + 6 + 4+r + 4 = 20+r+ep r 



Habitat. — New Zealand. 1 



1 Huxley (Proc. Zool. Soc. London, 1878, p. 771) mentions two specimens of a 

 Paraneplirops in the British Museum, said to have come from the Fiji Islands. 

 Mr. Edward J. Miers wrote to me, February 4, 1894, that he could not find any such 

 specimens in the collection of the British Museum. Mr. Charles Chilton, of Christ- 

 church, New Zealand, to whom I am indebted for a fine collection of the crayfishes 

 of that country, has been at some pains to procure specimens of the fresh-water 

 Crustacea of the Fijis, and he informs me that all the "crayfishes" have proved 

 to be fresh-water prawns (Palwmon). It is probable that the specimens of Para- 

 nephrops labelled " Fiji Islands" in the British Museum were assigned to the wrong 

 locality. 



