8 PROCEEDINGS OF THE NATIONAL. MUSEUM. vol.64. 



BOECKELLA GRACILIS Daday. 



1902. Pseudoboeckella gracilis Daday, pp. 227-231, pi. 9, figs. 1 and 9-17. 

 19056. Boeckella gracilis Ekman.p. 602. 



Female. — The first antennae extend to the second abdominal seg- 

 ment. The sides of the last thoracic segment are not lobed and pro- 

 ject somewhat. The terminal segments of the exopodites of the fifth 

 feet are armed with 3 spines. 



Male. — Both endopodites of the fifth feet are 1 segmented and 

 small; the second basal segments of both feet bear a cuticular pro- 

 jection on the inner distal angle. Figure 7 shows the fifth feet of 

 the male. 



Length. — Male, 1.4 to 1.6 mm.; female, 1.7 to 2.2 mm. 



Argentina. 



BOECKELLA INSIGNIS Smith. 



1909. Boeckella insignis Smith, p. 85, pi. 17, figs. 4-12. 



Female. — The first antennae extend to one-half the length of the 

 furcal setae. The exopodites of the seco'nd antennae consist of 6 

 segments, 1, 3, 4, and 5 being short. The projections of the last 

 thoracic segment are short. The terminal segments of the exopodites 

 of the fifth feet are armed with 6 spines or setae. 



Male. — In the fifth feet the right endopodite consists of one seg- 

 ment and equals in length one-half the second segment of the exopo- 

 dite; the left endopodite is very short, 1 segmented, and ciliated. 

 Figure 8 shows the fifth feet of the male. 



Length. — Female, 2 mm. 



Tasmania. 



BOECKELLA LONGISETA Smith. 



1909. Boeckella longisela Smith, pp. 85-8G, pi. 17, figs. 13-17. 



Female. — The first antennae extend to the furcae. The sides of 

 the last thoracic segment are lobed and extend to one-half the length 

 (if the first abdominal segment. The terminal segments of the exopo- 

 dites of the fifth feet are armed with 7 spines or setae. 



Male. — In the fifth feet the right endopodite is 2 segmented and 

 extends to one-haK the length of the second segment of the exopo- 

 dite. The left endopodite is rudimentary or wanting; in figure not 

 separated. Figure 9 shows the fifth feet of the male. 



Length. — Female, 1.5 mm. 



Tasmania. 



BOECKELLA MICHAELSENI Mrazek. 



1901. Boeckellina michaelseni Mrazek, pp. 11-12, figs. 10, 33, 36, 47, 48. 



1901. Boeckella pygmaea Daday, pp. 349-350. 



1902. Pseudoboeckella pygviaea Daday, pp. 231-233, pi. 5, figs. 8-12. 

 1905. Pseudoboeckella anderssonorum Ekman, pp. 10-14, figs. 3-5. 

 19056. Boeckella michaelseni Ekman, p. 603. 



1914. Boeckella michaelseni Scott, pp. 1 and 2, pi. 1, figs. 4-6. 



