1900.] MABINE iATJNA OF CHRISTMAS ISLAND. 141 



V. List of the Foraminifera from the Boat-channel, Flying Fish 

 Cove, Christmas Island, 11 fathoms. By F. C. Chapman, 

 A.L.S., F.B.M.S. 



1. Biloculina ring ens (Lamarck). Very rare. 



2. Spiroloculina fragilissima Brady. Very rare. 



3. Miliolina oblong a (Montagu). Very rare. 



4. „ seminulum (L.) Frequent ; small. 



5. „ auberiana (d'Orb). Rare ; rather small. 



6. „ parlceri Brady. Very rare. 



7. „ bicomis (Walker & Jacob). Very rare. 



8. ,, rupertiana Brady. Frequent ; very fine. 



9. „ insignis Brady. Very rare. 



10. Hauerina ornatissima (Karrer). Bare. 



11. Orbitolites complanata Lamarck. Frequent. 



12. „ marginalis (Lam.). Very rare. 



13. „ duplex Carpenter. Bare. 



14. Tecetularia ragosa (Beuss). Bare. 



15. Bolivina limbata Brady. Very common. 



16. Spirillina limbata Brady. Bare. 



17. Truncatalina rostrata Brady. Common. 



18. „ ungeriana (d'Orb.). Very rare ; small. 



19. Pulvinulina repanda (Fichtel & Moll). Common. 



20. Calcarina hispida Brady. Very rare. 



21. Oypsina vesiculates (Parker & Jones). Bare. 



22. Polytrema miniaceum (Pallas). Common. 



23. Polystomella macella (Fichtel & Moll). Rare. 



24. Heterostegina depressa d ; Orb. Common. 



VI. EXPLANATION OF THE PLATES. 

 Plate XII. — Sponges from Christmas Island. 



Fig. 1. Teihya affinis (p. 133), nat. size. 



2. Pseudosuberites andrewsi (p. 135), nat. size. 2 a. oscule, X 30 ; 2 b, section, 



X 30. 



3. Microciona dubia (p. 136), nat. size. 3 a, section, x 40. 



4. Stylotetta irregularis (p. 137), nat. size. 



5. Bhicochalina sessilis (p. 138), nat. size. 



6. Beniera innominata (p. 13ti), nat. size. 6 a, section, X 30. 



7. Petrosia exigua (p. 139), nat. size. 



Plate XIII. — Sponges from Christmas Island. 



Fig. 1. lotrochota baculifera tumescens (p. 136), strongyles x 300. 



2. Microciona dubia (p. 136); a-d X 300; e-f X 1600. a, thick sub- 



tylote ; b, spined style ; c, slender tylote ; d, large toson ; e, pal- 

 mate isochehi, side view ; e', ditto, front view ; /, short toxon. 



3. Tethya affinis (p. 133). a, strongyloxeum, X 80 ; b, spheraster, X 400; 



c, somal chiaster, X 400 ; d, dermal chiaster, X 400. 



4. Petrosia exigua (p. 139), oxeum, X 300. 



5. Render a innominata (p. 138). a, strongyle, X 300 ; b, oxeum x300. 



6. Stylotetta irregularis (p. 137); a-a", x300. a, oxeum ; b, style ; c, stron- 



gyle ; d, slender oxeum. 



7. Pseudosuberites andrewsi (p. 135) ; tylote, X 300. 



8. Bhu-ochalina sessilis (p. 138), oxeum, X 150. 



