AST. 8. 



ON BOECKELLA AND PSEUDOBOECKELLA MAESH. 



17 



ject from the body at very nearly right angles; they have inner lobes 

 which are acute. The terminal segments of the exopodites of the fifth 

 feet have 7 spines. 



Male. — In the fifth feet the right endopodite is 1 segmented, 

 conical in form, and extends three-fourths the length of the second 

 segment of the exopodite. The second basal segment of the left 

 foot has on the inner distal angle a small, smooth lamella. The left 

 endopodite is 1 segmented, rounded at the end, and nearly equals 

 in length the first segment of the exopodite. Figure 24 shows the 

 fifth feet of the male. 



Length. — Female, 1.6 mm. 



iSouthern Australia. 



Figs. 24-26.-24, Boeckella symmetkica Sars, fifth feet of male, x 114, after Sars. 25, B. tenera 

 Sars, fifth feet of male, after Saes. 26, B. triarticulata Thompson, fifth feet of male, x 87, 

 after Sars. 



BOECKELLA TENERA Sars. 



1912. Boeckella tenera Sars, pp. 10-12, pi. 8, figs. 6-9. 



Female. — The first antennae extend to the enc^ of the furca. The 

 sides of the last cephalothoracic segment are produced backward 

 nearly one-half the length of the first abdominal segment; the left 

 side is much larger than the right; they have inner lobes which are 

 small and spiniform. The terminal segments of the exopodites of the 

 fifth feet have 7 spines. 



Male. — In the fifth feet the right endopodite is 1 segmented, 

 pointed, and extends about one-half the length of the second segment 

 of the exopodite. The second basal segment of the left foot has on 

 20183— 25— Proe.N.M.vol.64 10 



