third segment has 5 internal setae, 3 small 

 external spines, and 1 strong terminal spine 

 almost as long as the segment. 



The third and fourth legs (fig. 15) are simi- 

 lar. The basipod has a single seta on the pos- 

 terior surface of the basis. The exopod is 

 3-segmented; the first and second segments 

 each have 1 internal .seta and 1 external spine; 

 the third segment has 5 internal setae, 3 ex- 

 ternal spines, and 1 strong terminal spine 

 nearly as long as the segment. The endopod 

 is also 3-segmented; the first segment has 1 

 internal seta, and the second segment 2 inter- 

 nal setae. The number of setae on the third 

 segment is 8 in the third leg and 7 in the fourth 

 leg. 



The fifth pair of legs (fig. 16) is asymmetri- 

 cal. Both the right and the left legs have a 

 3-segmented exopod and a small, lamelliform 

 endopod. The endopods of both legs have 

 nearly the same shape, but the left one is 

 slightly larger. The third exopodal segment of 

 the left leg has a low, triangular projection 

 on the external margin and 2 apical clawlike 

 spines, the outer of which is larger and termi- 

 nates with 2 points. The third exopodal seg- 

 ment of the right leg is lamelliform and lacks 

 spines or setae. 



Remarks 



Because of one long frontal spiniform proc- 

 ess, .4. acideatus appears to be closely related 

 to A. armatus Wolfenden, 1911, which Farran 

 (1929) considered as a probable synonym of 

 the former. Wilson (1950), however, rede- 

 scribed both sexes of A. armatus as a valid 

 species. 



The present specimen seems to differ only 

 slightly from A. armatus described by either 

 Wolfenden (1911) or Wilson (1950) in that 

 the frontal process is comparatively short and 

 both endopods of the fifth pair of legs are 

 simple in.stead of forked. 



Arietellus setosus Giesbrecht, 1892 



Occurrence 



Sta. 5. 1 adult male, 3.93 mm. 



Sta. 7. 2 adult males, 4.03 to 4.12 mm. 



Remarks 



This species can readily be distinguished 



from the other species of the genus by the short 

 and slightly curved spiniform process of the 

 forehead and the strong spiniform projections 

 of the last metasomal segment. These charac- 

 ters have been figured by Grice (1962). 



FAMILY CANDACIIDAE 

 Candacia ethiopica Dana, 1849 

 Occurrence 



Sta. 3. 2 adult females, 2.47 to 2.60 mm.; 



2 adult males, 2.48 to 2.50 mm. 

 Sta. 5. 3 adult females, 2.83 to 2.97 mm. ; 



5 adult males, 2.47 to 2.93 mm. 

 Sta. 7. 5 adult females, 2.77 to 3.03 mm. ; 



7 adult males, 2.50 to 2.67 mm. 

 Sta. 9. 1 adult female, 3.00 mm. 



Remarks 



The female is easily distinguished from the 

 other species of the genus by the small lateral 

 and ventral spiniform processes of the genital 

 segment and by the terminal segment of the 

 fifth leg, which has 7 spines. 



The male is recognized by the spiniform 

 projection of the left posterolateral corner of 

 the metasome; the tip of this projection is 

 divided into 2 points. The genital segment has 

 2 triangular processes on the right margin. 

 These characters have been figured by Grice 

 (1962). 



Candacia bipinnata Giesbrecht, 1889 

 (Plate 12, figs. 17-22) 



Occurrence 



Sta. 13. 3 adult females, 2.90 to 3.00 mm. ; 



3 adult males, 2.77 to 2.83 mm. 

 Sta. 15. 3 adult females, 2.84 to 2.90 mm. ; 



2 adult males. 2.86 to 2.91 mm. 

 Sta. 16. 3 adult females, 3.06 to 3.16 mm. ; 

 5 adult males, 2.75 to 3.02 mm. 



Remarks 



The genital segment of the female (fig. 17) 

 has lateral conical projections; the tips of the 

 projections are produced into small spines. The 

 second urosomal segment has a flaplike pro- 

 trusion on the ventral margin. The male is 

 distinguished from the other species of the 

 genus by the shape of the last metasomal seg-l 

 ment and the genital segment (fig. 20). 



566 



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