222 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Vessel : Station 



Do 31 _— 



Do 29 



Stranger 34 



Satsuma 32 



Occurrence 

 3 females, 1.41-1.55 

 mm. 

 present. 

 1 female, 1.39 mm. 

 1 female, 1.26 mm. 



Remarks: The female is distinguished from 

 other species of the genus by the short anal 

 segment (figs. 1, 2) and by the form of the 

 fifth feet (fig. 3). The male is recognized by 

 the protrusion of the second basipodal segment 

 of the left foot and the long terminal segment 

 of the right exopod (fig. 4). 



Other authors, including Farran, 1929, men- 

 tion that considerable variation occurs in the 

 length of this species. In at least one collection 

 (Smith 94), two size groups were noted as fol- 

 lows: females 1.46-1.53 (6); 1.87-1.90 (6); 

 males 1.39-1.53 (7) ; 1.77 (1) mm. 



Luckutia ovalis Wolfenden, 1911 



(Plate 24, figs. 5-9) 



Pacific records: Farran, 1929; 1936; Mori, 1937; 

 Wilson, 1950; Tanaka, 1953; Anraku, 1954b; Tsuruta 

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

 Motoda and Anraku, 1955; Nagaya et al., 1955; Chiba, 

 1956; Honjo et al., 1957; Yamazi, 1958a. 



Vessel : Station Occurrence 



Hugh M. Smith __ 132 2 females, 1.32, 1.36 



mm. 



Do 153 1 female, 1.37 mm. 



Do 178 3 females, 1.34-1.36 



mm. 



Do 63 1 female, 1.46 mm. 



Stranger 34 1 female, 1.39 mm. 



Orsom 10 present. 



Sats2ima 32 1 female, 1.44 mm. 



Remarks: The female is most easily recog- 

 nized by its small size, the two-segmented endo- 

 pod of the first feet (fig. 8), and the structure 

 of the fifth feet (fig. 9). 



Family HETERORHABDIDAE 



Heterorhabdus spinifrons (Claus, 1863) 



(Plate 24, figs. 10-11) 



Pacific records: Vervoort, 1957. Also, Brodsky, 

 1950; Tanaka, 1953. 



Vessel: Station Occurrence 



Hugh M. Smith 144 present. 



Do 29 3 females, 2.69-3.57 



mm.; 3 males, 

 3.04-3.20 mm. 



Do 63 1 male, 2.41 mm. 



Satsuma 32 3 females, 2.10-2.18 



mm. 



Remarks : In both sexes the forehead is pro- 

 longed into a point (fig. 10), a character which 

 will identify this species. In the female, one of 

 the distal 3 spines of the maxilliped is small 

 and slender (fig. 11). 



Heterorhabdus papilliger (Claus, 1863) 

 (Plate 24, figs. 12-16) 



Pacific records: Esterly, 1905; Scott, 1909; Farran, 

 1929; 1936; Mori, 1937 ; Tanaka, 1937; Dakin and Cole- 

 fax, 1940; Johnson, 1942; Mori, 1942; Wilson, 1942; 

 Brodsky, 1950 Wilson, 1950; Anraku, 1952; Honjo, 



1952; Tanaka, 1953; Anraku, 1954a; 1954b; 1954c; 

 Chiba, Tsuruta, and Maeda, 1955; Motoda and Anraku, 

 1955; Nagaya et al, 1955; Chiba, 1956; Heinrich, 

 1957b; Yamazi 1958a. 



Vessel : Station Occurrence 



Hugh M. Smith __ 94 2 females, 2.04, 2.07 



mm. ; 3 males, 

 1.80-1.94 mm. 



Do 132 2 females, 1.87, 1.90 



mm. ; 1 male, 1.87 

 mm. 



Do 144 1 female, 2.14 mm.; 



1 male, 2.11 mm. 



Do 178 6 females, 1.80-1.87 



mm.; 6 males, 

 1.70-1.84 mm. 



Do 29 1 female, 2.00 mm. 



Do 31 4 females, 1.90-1.94 



mm.; 1 male, 1.97 

 mm. 



Do 63 2 females, 1.77, 1.97 



mm. 



Stranger 34 1 female, 1.94 mm. 



Orsom 10 1 female, 1.84 mm. 



Remarks: The female forehead is rounded 

 (fig. 12) and the 3 distal spines of the maxilli- 

 ped are all about equal in length in both sexes 

 (fig. 14). 



