No. 3656 COPEPODS—LEWIS 59 
postoral process, and one on the outer margin of each ramus of the 
sternal furca. The Eniwetok specimens do not have any of these 
membranes although the edge of these structures is thin and semi- 
transparent and unless closely examined, gives a membrane-like 
appearance. 
2. Pillai figures a blunt secondary projection on the proximal inner 
portion of the postoral process that is not present on the Eniwetok 
specimens. 
The identification of the Eniwetok material as C. confusus Pillai is 
questioned because of the two differences mentioned above and the 
absence of an adequate first description of the species. 
Both Pillai (1961) and Kirtisinghe (1964) list Wilson’s (1937a,b) 
and Shiino’s (1959a) ‘“‘Calligus constrictus”’ as a synonym of C. confusus 
because of the very similar morphology of the figured specimens. 
There are some differences in the morphology that could be consid- 
ered to be of a minor nature (e.g., shape of the postoral process), but 
there is a difference in the size of the specimens that should be evalu- 
ated with sufficient material. Pillai’s female specimen(s) are 2.9 mm 
while Shiino’s are 3.75 mm and Wilson’s 5.0 mm in length. Even the 
female specimen(s) of Kirtisinghe (1964), from Ceylon, measure 4.5 
mm in length, more than 1.5 times the length of Pillai’s specimen(s) 
from southern India. Because of the difference in size, as well as the 
other characteristics, it is felt that there is some question (as noted in 
the synonymy) about the inclusion of Wilson’s and Shiino’s material 
and perhaps even that of Kirtisinghe. 
Caligus pseudokalumai, new species 
FIGurRes 24, 25 
MarTeErRIAL.—1 female (holotype, USNM 120765) from the external 
surface of Gymnosarea nuda Giinther. 
MEASUREMENTS (in mm).—1 female: 
Total length, excluding caudal setae 2. 89 
Length of cephalothorax 2. 04 
Width of cephalothorax 1. 48 
Length of genital segment 0. 81 
Width of genital segment 0. 89 
Length of abdomen 0. 19 
Length of egg strings (strings broken) 
Description.—Cephalothorax (fig. 24a) ovoid, consisting of ceph- 
alon, maxilliped-bearing and first 3 pedigerous segments. Frontal region 
approximately one-ninth the length of cephalothorax, anterior surface 
with narrow membrane. Lunules (fig. 24e) continuous with membrane 
along anterior margin, extending posteriorly, on ventral surface, to 
junction of frontal region and rest of cephalothorax. Lateral edge of 
