61 
Modiolus neozelanicus I red ale 
{=ater Z e 1 e b o r, non M o 1 i n a). 
North Island: 3, many small sps. — 26, some small sps. — 
28, 1 small sp. — Auckland Island: 37, 2 sps., 1. 27 (close to the 
high water mark). — 38, many sps., 1. 30. — 39, 1 sp , 1. 21. 
Modiolus australis Cray. 
North Island: 2, 1 sp., 1. 17. — 24, 4 sps., 1. 46. — South 
Island: 29, 4 sps., 1. 38. — Auckland Island: 41 (Masked Island), 
1 small sp. 
Modiolavia impacta (Hermann). 
North Island: 3, many small sps. — 15, 6 sps., 1. 26. — 21, 
1 sp., 1. 15. — 22, 3 sps., 1. 40. — 28, 1 small sp. — South 
Island: 29, many sps., 1. 43. — Stewart Island: 32, 2 sps., 1. 26. 
It may be according to a strict application of the nomenclatory 
rules that I red ale rejects the generic name Modiolaria in favour 
of Musculus Bolten, but as this genus is a conglomeratic one and 
comprises also Anodonta, and in first case is synonymous with 
Ånodonta^ it seems most convenient to me to make no exchange 
of Modiolaria Beck. 
Lithophaga truncata (Cray). 
North Island: Ild, 1 sp., 1. 26. 
Dacvydium radians Suter. 
North Island: 16, 8 valves, 1. 4.5. 
Fam. Pectinidae. 
Pecten medias L a m a r c k. 
North Island: 10, 3 sps., 1. 72. — 16, 6 sps., 1. 69. — South 
Island: 29, 4 sps., 1. 7. 
Chlamys campbellicus n. sp. 
(PI II, figs. 36—39.) 
Shell of medium size, solid, both valves equally convex; ears 
very unequal, sharply set off from the valve by means of a sharp 
furrow, the anterior ears large, posterior less than half the anterior 
