288 
PACIFIC SCIENCE, Vol. XIV, July I960 
NOTES ON TWO OTHER SPECIES 
Candacia truncata (Dana) 
Figs. 42-45 
Candace truncata Dana, 1849, Proc. Amer. 
Acad. Arts Sci., 2: 24. 
Candacia truncata Giesbrecht and Schmeil, 
1898, Das Tierreich, 6, p. 130; auct. 
Candacia turgida Wilson, 1950, U. S. Natl. 
Mus. Bui. 100, 14(4): 183-184. New 
synonomy. 
In the course of examining plankton samples 
we have encountered numerous individuals of 
a species which appears to agree with the 
description of C. turgida Wilson (1950). We 
believe, however, that these specimens, as well 
as C. turgida, are identical with C. truncata 
( Dana ) . 
The pigmented process on the ventral side 
of the female genital segment (shaded portion 
of Fig. 42), which Wilson considered to be a 
protrusion of that segment, appears to be a 
mass of cement associated with a spermatophore. 
In most of the samples examined there were 
some females with this mass and others without. 
Furthermore, the mass can be removed quite 
easily with a needle. Tanaka (1935) presented 
a figure of a female C. truncata showing such a 
mass adhering to the genital segment. 
Wilson’s figure of the female fifth feet (1950: 
pi. 22, fig. 308) of his C. turgida apparently is 
not complete in detail. Dr. Thomas E. Bowman 
has kindly sent us a sketch of the fifth feet from 
one of the syntypes of this species. His sketch 
and the numerous fifth feet examined from our 
material agree in the structure of the large 
terminal finger. The external margin of this 
finger in all specimens examined and in Dr. 
Bowman’s sketch is finely serrate along most of 
its length. The distolateral and two external 
spinous processes are, however, somewhat vari- 
able. In some specimens the distolateral spinous 
process has one or two relatively large teeth 
on the internal margin as figured by Giesbrecht 
(1892). One has a single external tooth op- 
posite two internal ones; another has seven small 
internal teeth. In some specimens the feet are 
asymmetrical, being unequal in length and with 
unlike dentition on the distolateral spinous 
process. One specimen has four teeth on one 
foot and two on the other. In yet another, this 
process is toothed on one foot and smooth on 
the other. Figures 43-45 show some of the 
variations of the fifth feet of the female C. trun- 
cata from the central Pacific. Typical males of 
C. truncata have also been observed in our 
collections. Specimens of this species were ob- 
tained in the following localities: 22° 03.7' N., 
158° 40' W. ("Hugh M. Smith’’ cruise 25, sta. 
29, Feb. 1, 1954, 200-0 m. depth of tow); 
0° 00', 149° 36' W. ("Hugh M. Smith’’ cruise 
47, sta. 30, Oct. 27, 1958, surface collection). 
Seven females from 23° 55' N., 157° 31' W. 
("Hugh M. Smith” cruise 30, sta. 112-2, Aug. 
27, 1955, 49 m. depth of tow) have been de- 
posited in the U. S. National Museum (USNM 
102740). 
Candacia norvegica (Boeck) 
Figs. 46-65 
The distribution of Candacia norvegica 
(Boeck) in the North Atlantic has been sum- 
marized by Farran (1948). Sewell (1932) 
described a variety tropica from the Indian 
Ocean. In his reports on the Carnegie and Al- 
batross collections, Wilson (1942, 1950) 
recorded C. norvegica from many stations in 
the tropical and temperate Pacific Ocean. In a 
Figs. 46-65. Candacia norvegica (Boeck). Figures 46-62 refer to Pacific specimens; Figures 63-65 to 
Atlantic specimen. 46, female, lateral view; 47, abdomen, dorsal view, female; 48, lateral view of left genital 
spinous process; 49, lateral view of right genital spinous process; 50, 51, mandibular blades from one indi- 
vidual female, showing unlike basal teeth; 52, first maxilla, female; 53, second maxilla, female; 54, fifth feet, 
female, with two external spinous processes on each foot; 55, fifth feet, female showing three external spinous 
processes on one foot and two on the other; 56, male, dorsal view; 57, male, lateral view; 58, fourth and fifth 
thoracic segments and abdomen, dorsal view, male; 59, genital segment, ventral view, male; 60, fourth and 
fifth thoracic segments and genital segment, right lateral oblique view, male; 61, segments 17 through 19, 
right first antenna, male; 62, fifth feet, male; 63, abdomen, dorsal view, female; 64, left genital spinous proc- 
ess; 65, right genital spinous process. Figures 47-49 and 54 are from Pacific female 2.96 mm. total length; 
all others of Pacific female are from specimen 2.80 mm. total length. 
