200 STUDIES ON AUSTRALIAN MOLLUSCA, VIII., 



Mytilus erosus, Lamarck. 



Lamarck, Anim. s. Vert. vi. 1819, p. 120. 



This species, described from " New Holland," and probably 

 from Peron's collection, has been forgotten by modern writers. 

 Gray observed it as occurring in Capt. King's Australian Collec- 

 tion,* and Forbes t reported it definitely as found on Zostera flats 

 at Port Dalrymple in Northern Tasmania. 



There can scarcely be a doubt that this is the shell usually 

 known as Mytilus menkeanns, Philippi, — a MS. name in the 

 Cumingian Collection put into circulation by Reeve. | Probably 

 it is also the species catalogued by Menke§ from various places 

 in West Australia under the name of Mytilus mayellanicits, 

 Chemnitz. 



It has only occurred in New South Wales as a subfossil in 

 raised beaches at Maitland.|| 



Lima sydneyensis, nom. mut. 



Under the name of Lima brunnea I described^ an Australian 

 shell. I now find that A. H. Cooke previously used"^* the same 

 name for a Suez species; and accordingly change my name as 

 above. 



Contrary to the rules for the proposal of new species, Cooke's 

 Lima brunnea was buried in the text, concealed in a tabular list; 

 and has consequently been omitted from the Zoological Record, 

 and from subsequent literature. His scanty diagnosis is probably 

 insufficient for the recognition of the species. Such objectionable 

 work is to be dreaded by sj^stematists, as an uncharted reef is 

 dreaded by mariners. And as such a reef may by the erection of 

 a beacon be made a help instead of a hindrance, so we hope that 



* King's Survey Intertrop. Australia. Append, ii. 1S27, P- 477. 



t Voy. Rattlesnake, ii. 1832, p. 364. 



:;: Conch. Icon. x. Mytilus, 1857, pi. viii., f. 26. 



§ Moll. Nov. Holl. Specimen, 1843, p. 37. 



II David & Etheridge, Rec. Geol. Survey N.S.W., ii. 1890, p. 49. 



*J These Proceedings, xxvi. 1901, p. 21. 



** Ann. Mag. Nat. Hist. (5) xvii. 1886, p. 135. 



