I'RELIMINAEY REPORT. 103 



the same species of Copepods, Annelid8, Siphonophores, Pteropods, and 

 Tunicates, as in Station 220; a very similar assemblage of surface animals 

 was also obtained at Stations 222, 223, 225, 226, 227, 228, 229, 230, 231, 

 as far as Japan, varying somewhat in the relative abundance of Diatoms, 

 Radiolarians, Globigerina?, Copepods. Pteropods, Tunicates, and Annelids. 



At Station 225, Lit. 11' 24' N., long. 143 16' E., the surface fauna, as 

 noted by Dr. Willemoes Suhm, was especially rich, and the same may be 

 said of Station 230, lat. 26' 29' N., long. 137' 57' E. ; at Station 229, lat. 

 22' or N., long. 140' 27' E., Velella, Porpita, lanthina, and Glaucus make 

 their appearance, having been but seldom taken before on the way from 

 the Admiralty Islands. At Station 231, near the Japanese coast, the char- 

 acter of the water changed, and the tow-nets were filled with Diatoms and 

 Noctilucaj, and the proximity of a land mass was clearly indicated by the 

 change in the surface fauna. 



As regards the surface organisms on the " Challenger " line, — Japan to 

 Hawaii, — at Station 237, lat. 34° 37' N., Long. 140' 32' E., off the coast of 

 Japan, no less than seventeen species of Radiolaria are recorded from the 

 surface, together with Copepods, Pteropods, Tunicates, and young fishes as 

 well as Annelids, Siphonophores, Ctenophores, SagittsB, Euphausia, Lucifer, 

 Cyprinidas, Cuttle fish, Noctiluca, Diatoms, and Globigerinaj ; very much 

 the same surface organisms occur at Stations 238, lat. 35' 18' N., long. 144' 

 08' E., where the character of the hauls was again quite oceanic; 239, 240, 

 lat. 35' 20' N., long. 153' 39' E., where Copepods were specially numerous; 

 241, 242, 243, lat. 35' 24' N., long. 1G6 35' E., with the addition of Ilalo- 

 bate.s, Appendicularine, Doliolum, Saphirintc, Phronitna, Phyllosoma, Tomo- 

 pteris, Oxycephalus, Orbulina, Hastigera, and Diatoms in varying quantities. 



At Station 244, lat. 35' 22' N., long. 109' 53' E., the number of species 

 of surface Radiolarians recorded is not less than forty-five. These have 

 diminished again to thirteen at Station 245, lat. 36' 23' N., long. 174° 31' E. 

 There are also about the same number recorded from Stations 247, lat. 

 35' 48' N., long. 179' 57' W. ; 248, 249, lat. 37' 59' N., long. 171' 48' W. ; 

 250, 252, lat. 37° 52' N., long. 160° 17' W., and 253; though at the last 

 station the surface Radiolarians have increased in number to over thirty 

 species. At Stations 254, lat. 35' 13' N., long. 154' 43' W., 255, 256, lat. 



