228 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Candacia longimana (Claus, 1863) 

 (Plate 28, figs. 1-12) 



Pacific records: Scott, 1909; Farran, 1929; 1936; 

 Mori, 1937; 1942; Wilson, 1942; 1950; Honjo, 1952; 

 Tanaka, 1953; Anraku, 1954b; Tsuruta and Chiba, 

 1954b; Chiba, Tsuruta, and Maeda, 1955; Nagaya et 

 al., 1955; Chiba, 1956; Heinrich, 1957b; Honjo et al., 

 1957; Yamazi, 1958a. 



Family CANDACIIDAE 



genital segment of the female has two small 

 spines on the dorsal surface and the genital seg- 

 ment of the male has a bilobed protrusion ex- 

 tending from the right side. 



Vessel : Station 

 Horizon 32 — 



Satsuma 32 



Ocmrrence 

 __ 2 females, 2.82, 2.92 



mm. ; 1 male, 2.69 



mm. 

 1 female, 2.89 mm. 



Remarks: Twelve species of Candacia were 

 found in the collections. For each species, ex- 

 cepting C. guggenheimi which has recently been 

 described (Grice and Jones, 1960), I have usu- 

 ally included figures of the dorsal and lateral 

 views of both sexes. Figures are also given of 

 the fifth feet of each species and, for most spe- 

 cies, figures of certain of the cephalic append- 

 ages (gnathal lobe of the mandible, second 

 maxilla and maxilliped) are given. The females 

 of the species herein described are easily recog- 

 nized by the forms of the genital segment and 

 fifth feet. The males are recognized by the 

 character of the spine-like protrusion of the 

 right posterior thoracic margin, the structure 

 of the abdomen and the form of the fifth feet. 



The female of C. longimana has a symmetri- 

 cal genital segment (fig. 1), the basal tooth of 

 the mandible is tricuspate (fig. 3), and the 

 fifth foot terminates in 3 sub-equal points (figs. 

 4, 5). The right posterior thoracic margin of 

 the male ends in an irregular protrusion (figs. 

 6, 7) which in lateral view is seen to turn up- 

 ward (fig. 9). The right side of the genital 

 segment has a large finger-like protrusion. The 

 right fifth foot is chelate (fig. 11) and the distal 

 margin of the last segment of the left foot ends 

 in 3 small points (fig. 12). 



Candacia guggenheimi Grice and Jones, I960 

 Pacific records: Grice and Jones, 1960. 



Vessel : Station Occurrence 



Hugh M. Smith 29 present. 



Remarks : This species has recently been de- 

 scribed elsewhere (Grice and Jones, 1960). The 



Candacia tenuimana (Giesbrecht, 1889) 

 (Plate 28, figs. 13-18; plate 29, figs. 1-4) 



Pacific records: 

 son, 1942; 1950. 



Scott, 1909; Johnson, 1942; Wil- 



Vessel : Station 



Hugh M. Smith __ 29 __. 



Occurreyice 

 1 female, 2.07 mm.; 

 1 male, 2.20 mm. 



Remarks: The female genital segment is 

 slightly asymmetrical, the right side being more 

 produced than the left (fig. 13, 15). The basal 

 tooth of the mandible has 2 unequal cusps (fig. 

 17). The innermost spine-like protrusion of 

 the distal segment of the fifth foot (fig. 18) is 

 considerably longer than the other two. The 

 spine-like protrusion on the right posterior 

 thoracic margin of the male has a bifid tip (fig. 

 1, 2) and the genital segment is produced to 

 the right in the form of a narrow, curved, 

 spine-like process (fig. 2). As in the preced- 

 ing species, the right fifth foot is chelate (fig. 

 4). 



Candacia aethiopica (Dana, 1849) 



(Plate 29, figs. 5-16) 



Pacific records: Streets, 1877; Esterly, 1905; Scott, 

 1909; Farran, 1929; Yamada, 1933a; Tanaka, 1935b; 

 Farran, 1936; Mori, 1937; Dakin and Colefax, 1940; 

 Johnson, 1942; Mori, 1942; Wilson, 1942; 1950; Tanaka, 

 1953; Anraku, 1954b; Tsuruta and Chiba, 1954b; Chiba, 

 Tsuruta, and Maeda, 1955; Nagaya et al., 1955; Chiba, 

 1956; Honjo et al., 1957; Gilmartin, 1958. 



Vessel : Station Occurrence 



Hugh M. Smith __ 30 1 male, 2.24 mm. 



Horizon 32 1 female, 2.21 mm.; 



3 males 2.18-2.24 

 mm. 

 Satsuma 32 1 female, 1.97 mm. 



Remarks : Of the two spine-like protrusions 

 on the female genital segment, the one on the 

 left is the larger (figs. 5, 7). The basal tooth 

 of the mandible has 3 cusps, the middle one of 

 which is the larger (fig. 9). The distal seg- 

 ment of the fifth foot has 1 external spine, 3 



