64 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 126 
kalumai. The plumosities on the outer margin of the second and third 
segments of the endopodite are heavier in C. pseudokalumai than in 
C. kalumar. 
4. The first segment of the exopodite of the fourth leg bears a 
filamentous (or slightly denticulated) membrane at the base of the 
spine in C. pseudokalumai which is missing in C. kalumai. 
With one possible exception, these do not appear to be gross differ- 
ences and the apparent close relationship between the two species 
should be more closely examined when larger collections are available. 
The single difference that may be of a relatively gross nature is the 
tuft of plumosities (or their absence) on the first segment of the 
endopodite of the second thoracic leg. This is the easiest characteristic 
to use in separating the two species and, because of the relatively 
stable nature of the second thoracic leg, may indicate more divergence 
than is presently believed. 
TaBLE 10.—Armature of thoracic legs I-IV of the female of Caligus pseudokalumai, 
new species 
Inter- Protopodite Exopodite Endopodite 
eg:|| Surface: ||| podal i. 2 = s 
late 
2 1 2 3 1 2 3 
I | Outer sss, D th SH! 
Inner p c 3P 
II | Outer m,p m,mH | mH rh, mH, Q Cc C, 2P 
m 
Inner Spe m, s CG, (Ode 5P Pic, 2P. icv4e 
III | Outer* m,p s,m C.S; Dp: ce, 3p’, D c | ¢,3P 
m 
Inner 3S;-2,1n 8 lel iP c, 3P Perse 
IV | Outer 3s, p fm, mH | 2H 
* Armature tabulation does not include several hairlike processes in middle of protopodite. 
The species name indicates the similarity between the new species 
from Eniwetok and Caligus kalumai from Hawaii. 
Caligus alaihi, new species 
FIGURES 26-28 
Mareriau.—1 female (holotype, USNM 120766) and 1 male 
(allotype, USNM 120767) from the buccal cavity of Holocentrus 
sammara (Forskal). 
