niESHWATlCK CRAYI-ISIIE.S OF A fSTH AI.I A . 1 iu 



ASTACOPSIS SERRATUS. (PLs.XV^l. XVIII. ct XXVI. fig.s.l'J U.) 



The Murray Rwer Craij/i.'ih. 



(Shaw, Zoology of New Holland, vol. i. p. 407, pi. iii., 1843.) 



A^ornejiclature. 



Name.s given to Murray River foim : 

 Cancer serratus Shaw, loc. cit. 

 Gray, Eyre's Journals of Expeditions of Discovery into 



Central Australia, vol. i. p. 409, 1845. 

 Astaciis armatus Von Martens, Ann. Mag. Nat. Hist. ser. 3, 



vol. xvii. p. 359, 1866. 

 Astacoides spinifer Heller. Novara Rei.se, Crustaceen, p. 102. 



Taf. ix., 1865. 

 Astacoides serratus McCoy, Prndi-omns of the Zoology of 



Victoria, vol. i. pi. 15, 1885. 



Names given to Paramatta River and other forms : - 



Astacopsls spinifer Spence - Bate, 'Challenger' Reports, 



vol. xxiv. pi. xxviii., 1888. (Large Paramatta form.; 

 Astacopsis nobilis Dana, United States Exploring Expedition 

 — Crustacea, Part I. p. 526, pi. xxxiii., 1852. (Locality 

 given as New South Wales. A not very clea.r figure 

 of a 5-inch specimen.) 

 Astacus aiostraliensis Milne-Edwaids, Hist. Nat. Crust, vol. ii. 



p. 332, pi. xxiv. (Small Paramatta type.) 

 Astacopsis paramaitensis Spence-Bate, loc. cit. p. 21)2. pl.xxiii. 



(Small Paramatta specimen.) 

 A. sydneyensis Spence-Bate, loc. cit. [). 204, [)1. xxiii. (Very 



small Paramatta specimen.) 

 Astacoides /?Ze6e??6s Hess, Archiv fiir Naturg xxxi. p. 164, 

 Taf. 7, 1865. (From Sydney. Small Paramatta (?) 

 form.) 

 Rostrum elongated ; spines on rustial keel sharp and long : 

 posterior border of keel tumid. 



A sharp spine is present on carapace just posterior and 

 lateral to the end of rostral keel, and another sharp spine is present 

 posterior to this and confluent with a rounded boss. 



There are a few blunt tubercles and two or three sharp spines 

 on theantero-lateral part of the carapace, and the branchiostegites 

 are not onlv tuberculated, b\it carry a superior row of very large 

 spines. 



The interantennal spine is r-ather short and broad, witli pr^o- 

 duced later-al angles at the base (PI. XXVI. fig. 12). 



The chitinous margin of the upper lip has small lateral arches 

 and a large concave median arch (fig. 12). 



The inner border of the antennal scale does not suddenly 

 expa,nd at the base of the terminal spine (fig. 13). 

 The sternal keel is depressed and blunt (fig. 14). 

 The first abdominal segment has two very large .spines on eacli 

 durso hiTer'al mai'sin. 



