60 THE DEPTH AND MARINE DEPOSITS OP THE PACIFIC OCEAN. 



bottom-living Foraminifera, with microscopic scales of calcite, doubtless due 

 to the comminution of these shells, a few Echinoid spines, Ostracodes, frag- 

 ments of Lamellibranchs and Pteropods. 



Residue : 21.38 per cent, rich red-brown, very clayey : — 



Siliceous Organisms (traces), spherical Radiolaria, Diatoms, and Sponge 

 spicules. 



Minerals (traces), a very few angular particles, 0.4 mm. in diameter, 

 belonging chiefly to a basic labradorite ; pyrites is met with in individuals 

 showing sometimes crystalline faces ; there are also particles belonging to 

 a decomposed ferro-magnesian mineral, greenish, and nearly opaque ; augite 

 cannot be identified with certainty. 



Fine Washings (21.38 per cent), practically pure clay, brown and floccu- 

 lent, with a very few mineral particles too small for identification, and frag- 

 ments of siliceous organisms. 



The following is a list of the species of Foraminifera observed in the 

 deposit from this station : — 



Biloculina depressa, d'Orb. 



" sphcera, d'Orb. 

 Spiroloculina tenuis (Czjzek). 

 Miliolina venusta (Kar.). 



" seminulum (Linu.). 



" oblonga (Montag.). 

 Bathysiphon filiformis, Sars. 

 Rhisammina algmforinis, Brady. 

 Beophax spiculifera, Brady. 



" nodulosa, Brady. 

 Haplophraz/mium latidorsatum (Bornem.). 



" glohigeriniforme (P. & J.). 



" anceps, Brady. 



" glomeratum, Brady. 



Ammodiscus tenuis, Brady. 

 Trochammina pauciloculatn, Brady. 



" ringens, Brady. 



Webbina clavata, J. & P. 

 Verneuilina pygmcea (Egger). 

 Gaudryina pupoides, d'Orb. 

 Bulimina elegans, d'Orb. 



" aculeata, d'Orb. 

 Virgulina subsquamosa, Egger. 



" schreibersiana, Czjzek. 



" squamosa, d'Orb. 

 Bolivina punctata, d'Orb. 

 Pleurostomella alternans, Schw. 

 " subnodosa, Rss. 



Cassididina subglobosa, Brady. 

 " crassa, d'Orb. 



" ^jarA;e>'mwa, Brady. 



" bradyi, Norman. 



Lageua longispina, Brady. 

 " alveolata, Brady. 

 " " var. substriata, Brady. 



" torquata, Brady. 

 " fimbriata, Brady. 

 " marginata (W. & B.). 

 " striatopunctata, P. & J. 

 " feildeniana, Brady. 

 " striata (^d'Orb.). 

 Lagcna hexagona (Will.). 

 " exsculpta, Brady. 

 " formosa, Schw. 

 " semistriata, Will. 

 Nodosaria roemeri (Neugeb.). 

 Uvigerina brunnensis, Kar. 

 " aspenda, Czjzek. 

 " acideata, d'Orb. 



Globigerina conglobata, Brady. 

 " sacculifera, Brady. 



" cnquilateralis, Brady. 



" inflata, d'Orb. 



" mhra. d'Orb. 



dubia, Egger. 

 " dtgifata, Brady. 



