PACIFIC SCIENCE 
A QUARTERLY DEVOTED TO THE BIOLOGICAL 
AND PHYSICAL SCIENCES OF THE PACIFIC REGION 
VOL. XV JANUARY 1961 NO. 1 
Previous issue published October 12, I960 
CONTENTS 
PAGE 
A Taxonomic Study of the Indigenous Hawaiian Species of the Genus Hibiscus 
(Malvaceae) . Sister Margaret James Roe .... 3 
A Collection of Porifera from Northern New Zealand, with Descriptions of 
Seventeen New Species. Patricia R. Bergquist...... 33 
Effects of Pollution on the Free Amino Acid Content of Two Marine Inverte- 
brates. Rita D. Schafer. 49' 
Studies in the H elminth o cladiaceae (Rhodcphyta): Helminthocladia. 
Maxwell S. Doty and Isabella A. Abbott. 56 
Studies on Pacific Ferns, Part III. The Lindsaeoid Ferns. G. Brownlie.. 64 
Two New Chaetognaths from the Pacific. Angeles Alvarino 67 
Polydora rickettsi, a New Species of Spionid Polychaete from Lower California. 
Keith H. Woodwick 78 
An Ecological Perspective of Marcus Island, with Special Reference to Land 
Animals. Shoichi F. Sakagami...... 82 ' 
Two New Species of Chaetognatha from the Waters off Peru. Paul N. Sund.. 105 
A New Opisthobranch Mollusc from Hawaii. Alison Kay 112 
The Aleyrodidae ( H emiptera—Homoptera ) of New Caledonia. 
L. J. Dumbleton 114 
The Ascidians of Point Barrow, Alaska, Part I. Suborder Phlebobranchia 
(Enterogona). Donald P. Abbott. 137 
The Anatomy of Coluber radiatus and Coluber melanurus. R. A. M. Bergman 144 
Strontium-90 and Gross Beta Activity in the Fat and Nonfat Fractions of the Liver 
of the Coconut Crab (Birgus latro) Collected at Rongelap Atoll during March 
1958. Diptiman Chakravarti and R onald Eisler 155 
NOTE 160 
Pacific Science is published quarterly by the University of Hawaii Press, in January, 
April, July, and October. Subscription price is $4.00 a year; single copy, $1.25. Check 
or money order payable to University of Hawaii should be sent to University of Hawaii 
Press, Honolulu 14, Hawaii, U. S. A. Printed by Star-Bulletin Printing Company, Inc., 
420 Ward Avenue, Honolulu 14, Hawaii. 
SMITHSONIAN 
INSTITUTION 
MAR Z 3 1981 
