Fapers from Dr. Th. Mortensen’s Pacific Expedition 
1914^16. 
XIX. 
New Zealand Mollusca. 
(With Plates I—II and 24 text-figures.) 
By 
Nils Hj. Odhner, Stockholm. 
Our knowledge about the molluscan fauna of N. Zealand must 
be admitted to be rather satisfactory thanks to the extensive works 
made by collectors and investigators from within and without the 
country. The high State of the New Zealand malacozoology was 
manifested in 1913 by the appearance of Suter’s Manual of New 
Zealand Mollusca, giving a complete account of the composition of 
the fauna 'up to date of issue and invaluable to students on the 
same subject, on account of its modern systematic arrangement 
and accurate descriptions of every species. 
This manual will certainly for a long time be a foundation and 
also a stimulation to further research with the view to bring New Zea¬ 
land malacozoology to a still higher completion. As a contribution 
to this task, taken up by resident authors, I think the present 
publication may count upon interest. It deals with the abundant 
collections of mollusca brought home by Dr. Th. Mortensen 
from his exploration journey to New Zealand in 1914 and 1915. 
They were gathered in a great number of localities, most of them 
situated all round the North Island; a couple of yielding hauls 
were also made in the South Island, and further towards the South 
the collecting work was concentrated to Stewart, Auckland and 
Campbell Islands. A summary of all the localities from where 
marine mollusca were obtained begins the account, and in the 
following text a station number refers to this list. 
In this paper are recorded 379 species of mollusca, and, among 
Ihese, 29, all marine forms, are described as new to science. Most 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 77. 
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