PLATE XXXIXa. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Anterior hook of Praxilla abyssorum, .... 
X 
350. 
Portion of a branchial radiole (near the base) of Dasychone 
bairdi. The tips of the pinnse have been injured, . 
X 
12. 
Fragment of a branchial radiole of Dasychone picta, partially 
turned round so as to expose one of the external processes, . 
X 
90. 
View of a portion of one of the branchial arms of Dasychone 
orientalis, ....... 
X 
90. 
Fragment of the base of a branchial radiole of Dasychone japonica, 
X 
12. 
Portion of the middle of a branchial process of Dasychone 
nigro-maeulata, ...... 
X 
12. 
View (near the tip) of a portion of a branchial radiole of Dasychone 
violacea, ....... 
X 
12. 
Portion of the base of a branchial process of Dasychone capensis, 
X 
12. 
Two segments, from the distal region of a branchial radiole of 
Dasychone bairdi, ...... 
X 
12. 
Crustacean parasite {Praxillinicola hrbyeri) of Praxilla abyssorum, 
Enlarged. 
Crustacean parasite [(Estrella levinseni) of Ehlei'siella atlantica, . 
Enlarged. 
View of the distal aspect of the upper spinous circle of Hydroides 
multispinosa, ...... 
X about 24. 
Tube formed of a scale-like arrangement of shells from Port 
Jackson, Sydney, ..... About natural size. 
