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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 64. 



backward one-half the length of the first abdommal segment; the 

 ends are turned slightly outward and are acute; the inner margin 

 is sinuate. The terminal segments of the exopodites bear 3 spines. 



Male. — The right endopodite of the fifth feet is slender, 3 segmented, 

 and equal in length to the first 2 segments of the exopodite. The 

 second basal segment of the left foot bears on its inner distal angle a 

 cuticular projection which is as long as the endopodite. The left 

 endopodite is 2 segmented, somewhat less than one-half the length 

 of the first segment of the exopodite, and its terminal segment is 

 tipped with a small blunt spine. Figure 30 shows the fifth feet of the 

 male. 



Length. — Male, 2.6-2.8 mm.; female, 3.6-3.8 mm. 



Patagonia. 



Figs. 29-31. — 29, Pseudoboeckella dubia Daday, fifth feet of male, after Daday. 30, P. lonqi- 

 CAXJDA Daday, fifth feet of male, after Daday. 31, P. poppei Mrazek, fifth feet of male, 



AFTER POPPE AND MRAZEK. 



PSEUDOBOECKELLA POPPEI Mrazek. 



1895. Boeckella braziliensis, Poppe and Mrazek, pp. 13-16, figs. 1-1].. 

 1898. Boeckella braziliensis Giesbrecht and Schmeil (part), p. 60. 

 1901. Pseudoboeckella poppei Mrazek, p. 6. 



1901. Boeckella entzii Daday, pp. 345-346. 



1902. Boeckella entzii Daday, pp. 239-243, pi. 6, figs. 3-9. 

 19056. Pseudoboeckella poppei Ekman, p. 600. 



1909. Pseudoboeckella poppei Sars, pp. 22-29, pi. 3, figs. 1-16. 



Female. — The last segment of the cephalothorax projects back 

 fully one-half the length of the first abdominal segment; the sides 

 do not have inner lobes, but the inner margins are sinuate. The 

 first abdominal segment is somewhat asymmetrical, projecting more 

 to the left side. The terminal segments of the exopodites of the 

 fifth feet have 7 spines. 



