18 PROCEEDINGS OF THE NATIONAL, MUSEUM. vol.64. 



its inner distal angle a denticulate lamellar projection. The left en- 

 dopodite is 1 segmented and equal in length to the first segment of 

 the exopodite. Figure 25 shows the fifth feet of the male. 



Length. — Female, 1.8 mm. 



Southern Australia. 



BOECKELLA TRIARTICULATA Thompson. 



1883. Boeckia triarliculata Thompson, p. 95, pi. 6, figs. 1-9. 



1889. Boeckella triarliculata DeGuerne and Richard, p. 103, figs. 57-58. 



1894. Boeckella triarticulata Sars, p. 49, pi. 7, figs. 1-8; pi. 8, figs. 1-9. 



1896. Boeckella triarticulata Sars, p. 66. 



1898. Boeckella triarticulata Giesbrecht and Schmeil, p. 61. 



19056. Boeckella triarticulata Ekman, p. 602. 



1906. Boeckella triarticulata Brady, p. 695. 



1908. Boeckella triarticulata Sars, pp. 5-6, pi. 1, figs. 1-i. 



1922. Boeckella triarticulata Henry, p. 556. 



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

 ment. The exopodites of the second antennae are 7 segmented, seg- 

 ments 1, 3, 4, 5, and 6 being short. The sides of the last cephalo- 

 thoracic segment are divergent and extend back to the second 

 abdominal segment; they have inner lobes which are small, acute, 

 and bent outward. The first abdominal segment is asymmetrical. 

 The terminal segments of the exopodites of the fifth feet have 7 

 spines. 



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

 rounded at the tip which is armed with a short spine, and nearly 

 equals in length the first two segments of the exopodite. The 

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

 serrate lamella. The left endopodite is 1 segmented, rounded at tip, 

 and one-half the length of the first segment of the exopodite. Figure 

 26 shows the fifth feet of the male. 



Length. — According to Thompson, 2.54 mm.; according to Sars, 

 1894, male, 1.67 mm.; female, 2.1 mm.; according to Sars, 1908, 

 female, 2.5 mm. 



Australia; New Zealand. 



Genus PSEUDOBOECKELLA Mrazek. 



Syn.. 



Diaptorrms (part) LtfBBOCK, 1855. 



Boeckella (part) DeGuerne and Richard, 1889. — Poppe and Mrazek, 1895. 



(Part) Giesbrecht and Schmeil, 1898.— Daday 1901 (part), 1902 and 1905. 



Ekman, 1905. 

 Pseudoboeckella Mrazek, 1901. — Ekman, 19056. 

 ,Paraboeckella Mrazek, 1901. 



