58 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 118 



Many people and institutions have been of significant assistance 

 in the collection of the material and have assisted in other aspects of 

 the study. The author is gratefid to the Central University Kesearch 

 Fund of the University of New Hampshire for the assistance that it 

 provided in the purchase of a Bausch and Lomb Tri-Simplex Micro- 

 Projector, and to the Divdsion of Marine Invertebrates of the Smith- 

 sonian Institution for working space and use of the specimen col- 

 lections and the Wilson Library. Although the people and 

 institutions involved in the collection of the specimens are noted in 

 the description of the species, the author is especially grateful to the 

 U.S. Fish and Wildhfe Service, the Hawaii Board of Agriculture 

 (Division of Fish and Game), Lester Zukeran, Samuel Kaolulo and 

 Susumo Kato for the collection of both host and copepod material. 



Table 1. — Armature of hypothetical thoracic leg shown in figure 1 



Methods: The external surface, gill cavities, buccal cavity and 

 nasal cavities of the elasmobranch hosts were examined for parasitic 

 copepods. Copepods collected from these regions were killed m either 

 1 percent formalin or ethyl alcohol and later transferred to 95 percent 

 ethyl alcohol. Specimens to be di-awn or dissected were placed in 

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

 Black E dissolved in 85 percent lactic acid, and placed in benzyl 

 alcohol for final clearing and for dissection and drawing. 



Drawings of the entu-e animal were made from specimens placed 

 in benzyl alcohol and covered with a cover slip. Both a camera 

 lucida and a Bausch and Lomb Tri-Simplex Micro-Projector were 

 used in making these drawings. The appendages and processes were 

 drawn, either in situ on the specimen or removed and mounted using 

 Hoyer's mounting medium or Turtox' CMC-10. Measurements of 

 the copepods and their component parts were made with an ocular 

 micrometer. 



In the following figures the 9 and d^ signs are used separately under 

 each drawing to indicate a difference between the appendage of the 

 female and that of the male. The female and male symbols are used 

 together (9 d') to indicate similarity of the appendage or process in 

 both sexes. The sex from which the drawing is made is indicated by 

 a line under the appropriate symbol. If only one sex is represented 



