12. 



13. 



14. 



]5.< 



16. 



PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64. 



In the female the antennae reach the furca, the lobes of the last thoracic 

 segment are short and turned out symmetrica Sara. 



In the female the antennae extend to end of furca, the lobes of the last 

 thoracic segment turn back and reach one half the length of the first 

 abdominal segment tenera ^ Sars. 



In the female the antennae extend to the furca, the lobes of the last thoracic seg- 

 ment extend one-half the length of the first abdominal segment, .longiseta Smith. 



In the female the antennae extend to the abdomen, or to the second abdominal 

 segment, the lobes of the last thoracic segment extend to the second ab- 

 dominal segment; in the male the hook of the exopodite of the right fifth feet 

 is cleft at tip pseudocheles Searle. 



Lobes of last thoracic segment of female extend nearly to end of furca. 



nyoraensis Searle. 



Lobes of last thoracic segment of female do not exceed second abdominal 

 segment 15 



In the male there is a spine on the inner surface ot the first basal segment of 

 the right fifth foot, the endopodite of the left fifth foot is small and broad, its 

 breadth being to its length as 5 to 6 saycei Sars. 



There is no spine on the first basal segment of the male right fifth foot, the 

 endopodite of the left foot is small and narrow, its breadth being to its 

 length as 3 to 5 propinctua Sars. 



The right endopodite of the male fifth feet is short and rounded at tip. 



rubra Smith. 



The right endopodite of the male fifth feet is elongated, pointed, and bears 

 near base a short curved spine robusta Sars. 



BOECKELLA ASYMMETRICA Searle. 



1914. Boeclcella asymmetnca Searle, p. 192, pi. 10, figs. 1-4. 



Female. — The first antennae extend beyond the furcae. The sides 

 of the last tlioracic segment consist of two lobes each, which extend 

 back to the second abdominal segment. The two sides are asym- 

 metrical. The abdomen is asymmetrical, projecting to the right. 



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

 extends one-third the length of the second segment of the exopodite; the 

 left endopodite is lacking. Figure 1 shows the fifth feet of the male. 



Length. — Male, 0.75 mm.; female, 1.45 mm. 



Melbourne, Australia. 



. BOECKELLA BERGI Richard. 



1897. BoecMla hergi Richard, pp. 322-325, fig. 2. 



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

 1901. Boeckella hergi Sars, pp. 6-10, pi. 1, figs. 1-15. 



1901. Boeckellopsis hergi Mrazek. 



1902. Pseudohoeckella hergi Dad ay, pp. 220-224, pi. 4, figs. 6-19. 

 19056. Boeckella hergi Ekman, p. 602. 



Female. — The first antennae extend to the furcae, or to their ends. 

 The sides of the last thoracic segment, consisting of 2 lobes each, 

 extend back to second or third abdominal segment. The first 



1 In the opinion of the author, there is no sufficient reason for separating symmetrica and tenera. The 

 male fifth feet are about as near identical as two individuals can be. 



