8 G. STEWARDSON BRADY. 
claw very long, thread-like in its tenuity, nearly half as long as the entire limb ; 
external copulative organ (fig. 18) elongated, divided into two portions, the distal part 
pear-shaped and attached by a narrow neck to the basal region. 
Of this curious form only four specimens were found ; all of them males. Three 
specimens from a surface netting in Lat. 49° 40'S., Long. 172° 18°30' E., and one 
from a netting in five fathoms, Lat. 58° 49°45’ S., Long. 154° 48’ W. It is difficult 
to account for the presence at the surface of an animal quite destitute of swimming 
organs. I am disposed to think that the real habitat is probably among floating weeds, 
and that the extremely long hinder limb may be useful in giving a grasp of delicate 
algve or other vegetation. 
EXPLANATION OF PLATES. 
PLATE I. 
PHILOMEDES ORBICULARIS. 
Shell of female seen from left side x 22. 
5 ss from above x 22. 
, male seen from right side x 30. 
6. Beak and sinus of female seen from side x 84. 
7. Extremity of antennule of male x 84. 
8. Antenna of female x 50. 
. 9. Secondary branch of the same x 120. 
a LO: ) of male x 120. 
11. Mandibular foot of female x 100. 
(a) Process of basal joint x 300. 
. 12. Principal tooth of second maxilla seen from side x 240. 
fo lB rs +s , seen from front x 240. 
14. End of vermiform foot x 84. 
15. Post abdominal lamina x 84. 
XESTOLEBERIS RENIFORMIS. 
Fig. 4. Shell of male seen from left side x 84. 
a Ok r in from above X 84. 
PHILOMEDES ASSIMILIS. 
Fig. 16. End of antennule of male x 84. 
17. External branch of the antenna of male x 50. 
, 18. Antenna of female x 84. : 
19. Mandibular foot of female x 100. 
(a) One of the marginal setze more highly magnified. 
Figs. 20, 21. Principal tooth of second maxilla seen laterally and obliquely x 240. 
PIA Byenlile 
PHILOMEDES ASSIMILIS. 
Fig. 1. Shell of female seen from left side x 40. 
a » seen from above x 40. 
. » Male seen from left side x 40. 
4. Beak and sinus of male x 84. 
, }. Post-abdominal lamina of male x 84. 
ae 4Oe ra . female x 84. 
