No. 3656 COPEPODS—LEWIS 43 
2. The antenna of the adult male of L. plectropomi (providing the 
Eniwetok specimens are members of this species) has several spinelike 
projections on the second segment. The antenna of the adult male of 
L. dissimulatus does not have these. The only projecting process on 
the antenna of this species is a dactyliform adhesion process that 
usually is wrapped around the distal portion of the segment. 
Lepeophtheirus dissimulatus Wilson 
Lepeophtheirus dissumulatus Wilson, 1905, p. 631, pl. 22.—Lewis, 1964a, p. 178, 
figss LGA: 
Hosts AND DISTRIBUTION.—See Lewis (1964a, 1967). 
Marerrau.—1 female (USNM 120752) from the gill cavity of 
Parupeneus cyclostomus? (Lacépéde). 
MEASUREMENTS (in mm).—1 female: 
Total length, excluding caudal setae 
Length of cephalothorax 
Width of cephalothorax 
Length of genital segment 
Width of genital segment 
Length of abdomen 
Length of egg string (1 string) 
DeEscription.—See Lewis (1964). 
FOSOorPeRN 
Ie CO OI & NTI 
Or HR &W CO lO C1 OC 
Pseudocaligus similis, new species 
Figures 19-21 
MarteERiIAL.—1 female (holotype, USNM 120753) from the gill 
cavity of Fistularia petimba Lacépéde; 1 male (allotype, USNM 
120754) from the gill cavity of F. petimba; 1 male (paratype, USNM 
120755) from the gill cavity of F. petimba; 7 females (2 damaged) 
(paratypes, USNM 120756) from the buccal cavity of F. petimba; 
8 females and 5 males (retained by author) from the gill cavity of 
F, petimba. 
MEASUREMENTS (in mm).—14 females, 5 males: 
females males 
mean range mean range 
Total length, excluding 
caudal setae 6. 13 5. 44-6. 81 4 36 3. 92-4. 77 
Length of cephalothorax 2.18 1.92-2.41 2.22 2. 11-2. 41 
Width of cephalothorax 79 1. 48-2.00 1.92 1. 70-2. 11 
Length of genital segment 1. 81 1.44-2.07 0.87 0. 74-1. 00 
Width of genital segment 1. 36 0.96-1.78 0.69 0. 59-0. 78 
Length of abdomen 1. 78 1.44-2,00 0.87 0. 78-0. 96 
4, 23 2. 96-5 
Length of egg string (16 strings) 
