24 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64. 



and hraziliensis Daday are the same. B. hraziliensis Daday, how- 

 ever, is not D. hraziliensis Lubbock, for the endopodite of the left 

 fifth foot of the male in Lubbock's species is 1 segmented, but in 

 Daday's 2 segmented. Moreover Mrazek's figure shows a small spine 

 on the inner side of the hook of the exopodite of the male fifth foot, 

 and this does not appear in Daday's figure. It seems best, therefore, 

 to use setosa as the name of the species. 



PSEUDOBOECKELLA SILVESTKI Daday. 



1901. Boechella silvestri Daday, p. 348. 



1902. Boechella silvestri Daday, pp. 251-255, pi. 7, figs. 7-15. 

 1905a. Boechella entzii Ekman, pp. 15-16, pi. 1, fig. 6. 

 19056. Pseudoboeckella entzii Ekman, p. 600. 



Female. — The first antennae reach the end of the first abdominal 

 segment. The sides of the last cephalothoracic segment project back- 

 ward, reaching beyond the first abdominal segment; the left side is 

 larger than the right; the inner margins are sinuate, but there are no 

 inner lobes. The first segment of the abdomen is asymmetrical, pro- 

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

 fifth feet are armed with 5 spines. 



Male. — In the fifth feet the hook of the right exopodite is sharply 

 curved, is really sickle shaped. The right endopodite is 3 segmented, 

 reaching to the end of the second segment of the exopodite; the ter- 

 minal segment is armed with 4 spines. The left endopodite is very 

 short and composed of 2 segments. Figure 33 shows the fifth feet 

 of the male and Figure 34 a fifth foot of the female. 



Length. — Male, 1.8-2.2 mm.; female, 2-2.5 mm. 



This is the only described species in which the terminal segments 

 of the exopodites of the female fifth feet have 5 spines. Ekman 

 gives no description of B. entzii and has only one figure; that figure, 

 however, is of the female fifth foot and shows the terminal segment 

 of the exopodite with five spines. In lack of further description it 

 would seem that it should be considered identical with Daday's 

 silvestri. 



Daday reported silvestri from Patagonia. Ekman reported his 

 entzii from Louis Philippe Land, Southern Georgia, and the Falkland 

 Islands. If the preceding identifications are correct, it must have a 

 fairly wide distribution. 



PSEUDOBOECKELLA VALLENTINI T. Scott. 



1914. Pserulohoeckella vallentini T. Scott, pp. 5-7, pi. 1, figs. 2, 8, and 11. 

 Female. — The first antennae reach the third segment of the abdo- 

 men. The sides of the last cephalothoracic segment are straight, that 

 is flare outward very little, rounded at the tips, and have inner 

 lobes. The hook of the second segment of the exopodites of the fifth 

 feet is long, extending beyond the end of the third segment, and is 



