138 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



The author acknowledges with gratitude the assistance and guidance 

 of Drs. Albert Banner and William Gosline and other staff members 

 of the Department of Zoology at the University of Hawaii; the 

 assistance of Samuel Kaolulo, Lester Zukeran, Nick Ferris, the officers 

 and crew of the U.S. Coast Guard vessel Buttonwood, the Hawaii Board 

 of Agriculture (Division of Fish and Game), the Honolulu Aquarium, 

 and many others who assisted in collecting the host material used 

 in the survey. 



The author also is indebted deeply to the staff of the Division of 

 Marine Invertebrates of the U.S. National Museum and especially to 

 Drs. Thomas E. Bowman and Fenner A. Chace, Jr., for their assist- 

 ance and guidance during the period that the author worked at that 

 institution. 



The author further is grateful to Dr. Paul Illg of the University of 

 Washington for reading the manuscript and offering suggestions for 

 its improvement. 



Finally, the author appreciates the comparison made by Dr. S. M. 

 Shiino, of the Prefectural University of Mie, of some specimens of a 

 copepod described in this publication with specimens in his personal 

 collection. 



Methods. — The external surface, gill cavities, buccal cavity, and 

 nasal cavities of the acanthurid fishes collected were examined for 

 parasitic copepods. Copepods collected from these regions were killed 

 and preserved in 95 percent ethyl alcohol and later transferred to 70 

 percent ethyl alcohol. Specimens to be dissected were placed in 

 85 percent lactic acid to soften and clear them, were stained with 

 methyl blue dissolved in 85 percent lactic acid, and then were dissected 

 in 85 percent lactic acid. 



Drawings of the total animal were made with a camera lucida and 

 a Bausch and Lomb arc projector from specimens placed in the 

 acid and covered by a nine-miUimeter cover slip. Drawings were 

 made from appendages either in situ on the wholemount or from 

 others dissected off and mounted in Hoyer's mounting medium. 

 Measurements were made with an ocular micrometer. 



In the following figures the 9 and cf signs are used separately under 

 each drawing to indicate a difference between the appendage of the 

 female and that of the male, and together {9&) to indicate similarity 

 of the appendages. The sex from which the drawing is made is 

 indicated by underscoring the appropriate symbol. 



Terminology. — The term "cephalothorax" is used in the descrip- 

 tions to designate the fused cephalon and two or more thoracic seg- 

 ments, the maxilliped-bearing segment being considered as the first 

 thoracic segment. The term "free thoracic segments" is used to 

 designate those segments of the thorax not fused with the head. 



