PLATE IX. 



Eucopia australis, Dana. 



Fig. 1. Adult female with marsupial iJoucli, from right side ; magnified about three 

 times. The e.xterior parts of the four posterior pairs of legs were 

 broken off. 



Fig. 2. Same, from above. 



Fio-. 3. Ocular segment, with left eye and autenuular peduncles, from above. 



Fig. 4. Antenna, with scale and proximal part of flagellum. 



Fig. 5. Anterior lijj and mandibles in situ, from below. 



Fig. 6. Masticatory parts of mandibles, exhibiting the armature of the cutting edges. 



Fig. 7. Last joint of mandibular palp. 



Fig. 8. Posterior lip. 



Fig. 9. Maxilla of first pair. 



Fig. 10. Extremity of outer masticatory lobe of same ; more highly magnified. 



Fig. 11. Maxdla of second pair. 



Fig. 12. Maxilliped, with the rudimentary exoi^odite and greatly developed epipodite. 



Fio-. 13. Extremity of endopodite of same ; more highly magnified. 



Fio-. 13 (bis). Leg of first pair, or first gnathopod, with attached gill. 



Fig. 14. Gill of same, isolated and more highly magnified. 



Fiff. 15. Leo- of second pair-, or second gnathopod, with attached gill and incubatory 

 lamella. 



Fig. 16. Extremity of same ; more highly magnified. 



Fig. 17. Leg of third pair, or third gnathopod. 



Fig. 18. Extremity of same ; more highly magnified. 



