8 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
Remarxks.—Both sexes of this copepod have been described, most 
recently by Lewis (1966). In my pandarid revision (1967a), I noted 
the lack of information regarding the male of this species. Lewis 
provides a good description of this sex in his 1966 paper. My material 
conforms to his description in every way except in regard to the first 
antenna (antennule in Lewis). According to Lewis, the first segment 
bears 14 setules and the second segment, five setae. In my material 
I have found each segment with more setae than described by Lewis 
(25 on the first segment, 12 on the second). A figure of the male 
(fig. 26) and its first antenna (fig. 27) is provided to supplement the 
description by Lewis. 
This copepod is a common parasite on the body surface of mako 
sharks. Large clusters of females often occur in the posterior half of 
the body and usually on the ventral surface. Males generally are 
fewer in number and are scattered over the body surface. 
Dinemoura producta (Miiller) 
FIGURES 28-42 
Dinemoura producta.—Hewitt, 1967, p. 204. 
For earlier synonymy, see Cressey, 1967a. 
MartertAu.—A single collection previously reported from the North 
Atlantic (Cressey, 1967a); three collections from off Scripps Pier, 
La Jolla, Calif.; 12 collections off Chile and Peru, R. V. Anton Bruun, 
Stations 552, 553, 554, 567, 568, 569, 571, and 572. 
Frema.e.—A good description of the female of this species was given 
by Shino (1957). Additions to his description were provided by 
Cressey (1967). Further description of the female will not be included 
herein. 
Ma.r.—The male of this species was described by Wilson (1923) 
but a redescription of this sex is needed and is provided below. 
Body form as in figure 28. Total length 8.25 mm, greatest width 
3.6 mm (measurements based on a single specimen from Station 567). 
Lengths in mm of each of the body segments measured along the mid- 
dorsal line are as follows: 
cephalon 2. 55 
first free thoracic segment zo 
second ‘‘ se f . 60 
third ‘ se i led 
genital segment 2, 18 
abdomen (2 segments) . 90 
caudal ramus . 90 
No dorsal plates present. Abdomen 2-seemented, second segment 
about twice as long as first. Genital segment (fig. 29) nearly twice as 
