238 RECORDS OP THE AUSTRALIAN MDSEDM. 



Twelve specimens, 62-82mm. long, differ from all others in 

 the collection in having the whole carapace, abdomen, and 

 appendages markedly hirsute, while the rostrum is narrower 

 than is usual, though a careful comparison with othei's of the 

 typical form and of similar size fails to reveal any further 

 characters to distinguish them. They were obtained in the 

 Belraore Falls Creek, which runs into the Kangaroo River, 

 New South Wales, and were pi'esented to the Australian 

 Museum by Professor W. A. Haswell, F.R.S. He discovered 

 a new commensal worm, Temnocepluda, sp., associated with 

 them, which is distinct from any found elsewhere, and he 

 suo-ofests that this fact is of some importance as indicating at 

 least long isolation from their nearest allies. In the absence 

 of larger specimens, however, and considering that they 

 exhibit' no differentiating structural characters it seems best 

 to regard these example as I'epresenting only a variety of A. 

 serratiis, which may be distinguished by the name hirsntits. 



The colour variations of A. seiTcdns are very striking, but 

 cannot be investigated without the examination of a large 

 series of fresh specimens from many localities. Some examples 

 from the Blue Mountains are bright pink in life as in Shaw's 

 original figure. McCoy^ describes and figures Murray River 

 specimens as light blue, while adults from around Sydney are 

 lai-gely daik green ornamented with deep blue and red. 



Astacopsis serratiis is known from the Murray River and its 

 tributaries (Haswell*, McCoyS, Smith^, Austr. Mus.) ; Yarra, 

 Plenty and Bunyip Rivers, Victoria (Smith); Blue Mountains, 

 New South Wales (Haswell, Smith, Austr. Mus.) ; Parramatta 

 and near Sydney (Smith, Austr. Mus.); Mt. Kosciusko (Austr. 

 Mus.) ; various coastal localities from Bnndanoon and Wollon- 

 gong to Bari-ington Tops and Dorrego, New South Wales 

 (Austr. Mus.) ; ? Richmond River (Haswell) ; Lyra, near 

 Stanthorpe, Queensland (Austr. Mus.). 



3 McCoy— Prodr. Zool. Viet., Dec. ii., 1878, pi. xv. 

 ■» Haswell— Cat. Austr. Crust., 1882, p. 174. 



5 McCoy— Prodr. Zool. Vict., Dec. ii., 1878, pi. xv. 



6 Smith— Proc. Zool. Soc, 1912, p. 157, pis. xvi.-xviii. 



