PACIFIC SCIENCE 
A QUARTERLY DEVOTED TO THE BIOLOGICAL 
AND PHYSICAL SCIENCES OF THE PACIFIC REGION 
VOL. XXI JANUARY 1967 NO. 1 
Previous issue published December 31, 1966 
CONTENTS 
PAGE 
Late Cenozoic Ostracodes from the Drowned Terraces in the Hawaiian Islands. 
John C. Holden 1 
Trapezia and Tetralia ( Decapo da , Brachyura, Xanthidae ) as Obligate Ectopara- 
sites of Pocilloporid and Acroporid Corals. Jens W. Knudsen 51 
The Larval Development of the Sand Crab Emerita rathbunae Schmitt ( Dec a - 
poda, Hippidae). Margaret D. Knight 58 
Chromatophore Responses in Relation to the Photoperiod and Background 
Color in the Hawaiian Ghost Crab, Ocypode ceratophthalma {Pallas). 
Georgiandra Little 77 
Overt Responses of Polychoerus carmelensis (T urbellaria: Acoela) to Abrupt 
Changes in Ambient Water Temperature. Robert G. Schwab 85 
The Osteology of the Con grid Eel Gorgasia punctata and the Relationships of 
the Heterocongrinae. Richard H. Rosenblatt 91 
The Flora of Romonum Island, Truk Lagoon, Caroline Islands. Benjamin C. 
Stone 98 
A Hitherto Unrecorded Midge Gall of Myrsine australis (A. Rich.) Allan. 
B. C. Arnold 115 
An Unusual Example of Pseudoseisms Resulting from Military Exercises. Har- 
old L. Krivoy, Charles G. Johnson, and Robert Y. Koyanagi 119 
Gravity and Geological Studies of an Ultramafc Mass in New Zealand. Alex- 
ander Malabo ff 129 
NOTE 
A Noninjurious Attack by a Small Shark. David P. Fellows and A. Earl 
Murchison 150 
Pacific Science is published quarterly by the University of Hawaii Press, in January, 
April, July, and October. Subscription prices: institutional, $10.00 a year, single copy, 
$3.00; individual, $5 00 a year, single copy, $1.25. Check or money order payable to 
University of Hawaii should be sent to University of Hawaii Press, 535 Ward Avenue, 
Honolulu, Hawaii 96814, U. S. A. Printed by Heffernan Press Inc., 35 New Street, 
Worcester, Massachusetts 01605. ^ 
■ps«' 
