Teredines of Indo-Pacific — Srinivasan 
279 
the Philippine and Hawaiian islands, but also 
from Samoa, Canton, Johnston, Midway, Wake, 
Palau, Christmas, and Palmyra islands — all in 
the tropical Pacific. Hence these species are 
cosmopolitan in distribution. T. princesae was 
collected from floating timber by the Vityas 
Expedition (from station No. 5209 in the In- 
dian Ocean), and identified by the author. 
While most of the species reported from 
Madras are from pelagic timber only a few have 
been successful in invading timbers from en- 
closed waters (L. pedicellatus and T. furcifera 
in Madras harbour ; L. pedicellatus , T. furcifera , 
B. campannelata, D. manni , and N. hedleyi in 
Pulicat Lake). 
It may be of interest to note the records of 
occurrence of B. nordi Moll (Rajagopal, 1964) 
and B. rochi Moll (Rajagopaliengar, 1961) for 
the first time along the northeast coast of India 
at Calcutta. 
The apparent discontinuity in distribution of 
some of the species in the Indo-Pacific area is 
probably due to non-availability of wood for 
transportation, lack of intensive collection ef- 
forts, or to hydrobiological factors like tempera- 
ture and salinity which influence breeding. It is 
also possible that adults may not be able to 
tolerate wide ranges of temperature and salinity, 
and this may be a controlling factor for their 
successful establishment. 
ACKNOWLEDGMENTS 
My grateful thanks are due to Dr. G. Krish- 
nan, Director, Zoological Research Laboratory, 
University of Madras, and Dr. A. Purushotham, 
Director, Biological Research, Forest Research 
Institute, Dehra Dun, for their encouragement. 
I wish to thank also Dr. Roland W. Force, 
Director, Bishop Museum for his unstinted help 
during my stay at Honolulu. 
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