APPENDIX. 203 
_ Anatina tasmanica. New Zealand specimens are higher in propor- 
tion to the length, than those from Tasmania. 
Tellina deltotdalts. In Australian specimens there is in the left 
valve a posterior lateral tooth, which is absent in New Zealand speci- 
mens. Also in Australian specimens the anterior cardinal tooth of the 
left valve is not much broader than the posterior, and in the right valve 
the anterior cardinal is obsolete; while in New Zeatand specimens the 
anterior cardinal of the left valve is much broader than the posterior, 
and the anterior of the right valve is distinct, although small. In 
Australian specimens also the posterior dorsal margin is not so rounded 
as in New Zealand specimens, and the anterior dorsal margin is flat, 
instead of being concave. These differences are quite enough to 
separate the two species. 
Artemis subrosea. Specimens have been sent from Tasmania by 
Mr. Legrand. After careful comparison I can see no difference. In 
A. japonica, according to Reeve, the area of the ligament is more 
widely excavated, and the striz incline to become lamellated at the 
sides. 
Callista multistriata. Our species differs from that of Tasmania in 
being proportionately longer, and in the shell being much thinner. 
Specimens of C. dzsrupta, from Queensland and from N.S. Wales, are 
in the Museum. It is quite distinct. 
Mytilicardia excavata. A comparison with a specimen from Port 
Jackson shews that New Zealand specimens are not so deeply sinuated 
below; the anterior ribs are more numerous, and the posterior ribs 
never seem to have the large scales found in Australian specimens ; but 
I have only seen rubbed shells. It may be the same as JZ. tasmanica 
(Tenison-Woods,) published in the Pro. Royal Society of Tasmania, 
¥O75. p. LOL. 
Barbatia pusilla. This appears to be distinct from 4. donactformis, 
as pointed out by Reeve. Dr. v. Martens is, I think, right in regarding 
our species as 4. donaciformts. I have compared a valve with a 
specimen of B. puszl/a, from Port Jackson. 
Pecten australis. ‘The ribbing on New Zealand specimens is finer 
than on those from Australia ; but the difference is hardly sufficient to 
constitute another species. 
FE. W. Hi: 
