58 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 125 
(fig. 22f) nodular, situated lateral and slightly posterior to mandible 
base, bearing single naked seta and 2 naked setules. Maxilla (fig. 22g) 
2-segmented, situated lateral and slightly posterior to maxillule. 
First segment approximately four-fifths the length of second, tapered 
proximally and distally to articulation surface. Second segment 
rodlike with U-shaped membrane on distal half of inner surface; 
distal surface with 2 saber-shaped processes, innermost approximately 
one and one-half times the length of outermost, both with fine mem- 
branes along outer and inner margins. Postoral adhesion pads (fig. 
22f) evident as V-shaped ridges of heavy sclerotization adjacent to 
median longitudinal axis of body, slightly posterior to maxilla bases. 
Maxilliped (fig. 22h) 2-segmented, situated posterior and slightly 
medial to maxilla base. First segment strongly developed, inner 
TABLE 9.—Armature of thoracic legs I-IV of the female of Caligus confusus? Pillat, 
1961 
Inter- Protopodite Exopodite Endopodite 
Leg | Surface |} podal 
Plate 
1 2 1 2 3 1 2 3 
SSS SS SS SS | SS a SSS SSS 
I | Outer Dp m, rh 3dH 
Inner D;r* C,C Bea ed 
II | Outer m,p | m,dmH]} dmH dmH, Z#,Q|C le ¢, 3P 
m 
Inner sp mM iDe jACe Ge c, 5P Pc, 2e wee 
IiI | Outer a,m,p H Cip)s Crepe Cy |e; 2 
m 
Inner 1D; 2s,)-P.'s: Cie ce 3b iP |'4P 
m,s 
IV | Outer p fm,mH | fm, mH | 3fm,2mH, H 
*Roughened by minute projections giving brushlike appearance to element. 
#Spine with simple membrane on one side, frilled membrane on other. 
proximal half with heavily sclerotized transverse ridge; additional 
small, knoblike projection present on posterior surface (not shown on 
figure). Second segment and incompletely separable terminal process 
clawlike, segment with setule-like accessory process. Sternal furca 
(fig. 227) situated between and slightly posterior to maxilliped bases, 
tines angled outward, sinus between tines broad. 
Thoracic legs I-III biramous although endopodite of first leg 
reduced; fourth leg uniramous. For nature and armature of legs, see 
figures 22a-f and table 9. 
Discussion.—The Eniwetok specimens differ from Pillai’s figures 
and description of Caligus confusus (1961) in two respects: 
1. Pillai figures a membrane-like structure around the major spine 
on the postantennal process, another around the major spine on the 
