202 APPENDIX. 
Mytilus dunkert, from Auckland and Campbell Islands. Probably 
not dunkert, but, in my opinion, chorws Molina, which comes from 
Chili, and therefore another Austral. circumpolar species. 
Modiola securis, Lam (?) Dunedin, brackish water. May be a 
variety of Mytlus ater, Zelebor; the difference in the shape is not 
great. Modiola securis,is quite a doubtful species, which cannot be 
made out but by the examination of the original specimen. 
B. 
Since the manuscript of this catalogue was sent to press, the Otago 
Museum has received from Mr. J. Brazier of Sydney, and from Mr. W. 
Legrand of Hobart Town, valuable collections of Australian and 
Tasmanian marine shells; and from Captain Beddome and Mr. 
Petterd equally valuable collections of land and freshwater shells. 
I have compared Australian and New Zealand specimens of the 
following, and can find no specific difference between them: /odytropa 
succincta, Polytropa striata, Tritonium australis, Tritontum spengtert, 
Tritonium oleartum, Ranella leucostoma, Ranella vexillum, Cassis pyrum, 
Cassts achatina, Littorina caerulescens, Nerita atrata, Bankivia varians, 
Lepidopleurus longicymbus, Bullina lineata, [ucina divaricata (with 
Tasmanian specimens,) and Jodiola australis. 
Patula coma. ‘This species is quite distinct from 7. dzemenensts. 
Amphibola quoyana. This is certainly not an Amphibola. It is 
properly called Ampullarina by Australian Conchologists. 
Gadinia nivea. This may be the same as G. conica, Angas (P.Z.S. 
1867, p.115,) for specimens received from Mr. Brazier shew that it is 
not always so conical as represented by Mr. Angas. 
Trophon paive. In New Zealand specimens the spiral ribs are 
further apart. 
Voluta kaupit, Dunker. Mal. Bl. x., 1863, p. 145; Novitates, t. 
22), fi kaa) 
Hab. New Zealand (?) 
I have seen no description of this shell. 
Erato lactea. This may be the same as Marginella muscaria, but it 
is paler in colour. 
Littortna luctuosa. Mr. Tenison-Woods considers that this species 
is identical with Z. cncta. 
Patella magellanica. 1 have compared this with specimens in the 
Otago Museum from Kerguelen Island: they are very different. Dr. 
Kidder considers that the Kerguelen Island species is P. magellanica. 
If he is right, Reeve’s figure and description must be very inacurate. 
