no. 1136. OBSEBVATIONS ON THE ASTACIDJ?— FAXON. 675 



ASTACOPSIS NOBILIS (Dana). 



Astacoides noUUs Dana, U. S. Explor. Exped., XIII, Pt. l,p. 526, 1852; Atlas, pi. 



xxxin, fig. 3, 1855.— Hess, Arch. f. Naturgesck., 31terJahrg., I, p. 164, 1865 



(Gottingen Mus.). — Heller, Reise der Novara, Zool. Th., II, Pt 3,Crust.,p. 



101, 1865. 

 Astacus noUUs von Martens, Monatsber. Akad. Wissensoh. Berlin, 1868, p. 616 



(after Dana, Hess, and Heller). 

 Astacopsis noiilis Haswell, Cat. Australian Stalk- and Sessile-eyed Crust., p. 175, 



1882 (after Dana). 



Habitat. — New South Wales? (Dana); Sydney, New South Wales 

 (Heller, Hess). 



Von Martens and Haswell incline to identify this species with A. 

 franMinii; Huxley with A. spinifera. It seems to me more likely that 

 it is a valid species, the Australian representative of the Tasmanian A. 

 franMinii. 



ASTACOPSIS PARAMATTENSIS Bate. 



Astacopsis paramatlensis Bate, Eep. "Challenger"' Crust. Macrura, p. 202, pi. 

 xxvn, fig. 1, 1888. 



Habitat. — Paramatta River, Sydney, Australia (Bate). 



Bate described this species from a single female specimen 94 mm. 

 (about3f inches) long, collected by the " Challenger" expedition. Asta- 

 copsis spinifera was collected at the same place (Paramatta River, Syd- 

 ney), and I am inclined to think that A. paramattensis is nothing but a 

 young, small specimen of A. spinifera. It can be demonstrated that 

 among the Parastacinw, as, for instance, in the genus Paraneplirops, 

 the heavy armature of spines or tubercles may be acquired only by 

 large individuals, long after sexual maturity has been reached. 



ASTACOPSIS SYDNEYENSIS Bate. 



Astacopsis sydneyensis Bate, Eep. "Challenger" Crust. Macrura, p. 204, pi. 

 xxvn, fig. 2, 1888. 



Habitat. — Sydney, Australia (Bate). 



Based on single female specimen in the "Challenger" collections, 50 

 mm. (about 2 inches) long. Probably an immature specimen of an 

 Astacopsis, perhaps A. spinifera. 



"ASTACUS" AUSTRALASIENSIS Milne-Edwards. 



Astacus australasiensis Milne-Edwards, Hist. Nat. des Crustacis, II, p. 332, pi. 



xxiv, figs. 1-5, 1837. — Audouin et Milne-Edwards, Arch, du Mus. d'Hist. 



Nat., II, p. 36, 1841. 

 Astacus australiensis Erichson, Arch. f. Naturgesch., 12ter, Jahrg., I, p. 94, 1846 



(after Milne-Edwards). — Heller, Eeise der Novara, Zool. Th., II, Pt. 3, 



Crust., p. 100, 1865. — von Martens, Monatsber. Akad. Wissensch. Berlin, 



1868, p. 618 (after Milne-Edwards and Heller). 

 Astacopsis australiensis Haswell, Cat. Australian Stalk- and Sessile-eyed Crust., 



p. 178, 1882 (after Milne-Edwards). 



