ppvETj:mixary eepoet. 105 



are mine). At Station 259, m 2225 fathoms, 133 miles from Oaliu, the 

 tow-nets were sent down to 1000 fathoms, but it does not seem to me 

 from the lists of the organisms brought up that thej include any types 

 not found near or at the surface elsewhere in less than 250 fathoms, and 

 they were probably obtained in the upper belts. 



The surface organisms of the line Hawaii to Tahiti are marked by the 

 large number of species of surface Ivadiolarians collected specially at Sta- 

 tions 270, 271, in the line of the equatorial belt, and immediately north and 

 south of it at Stations 2C8, lat. T 35' N., 269, and 272-274, lat. 7' 25' S. 

 At Station 268 there were collected nearly sixty species of Radiolarians 

 from the surface ; at Station 269 about fifty species ; at Station 270 the 

 number of species of pelagic Radiolarians had increased to over eighty ; 

 and at Station 271 no less than 400 species of Radiolarians are re- 

 corded from the surface. At Station 272 the surface Radiolarians had 

 decreased to about 120 species ; at Station 273 to about seventy-five spe- 

 cies ; and at Station 274 the species had increased again to about 120 in 

 number; and at Station 284, south of Tahiti, in nearly 30' south latitude, 

 not more than seven species of Radiolarians were collected at the surface, 

 about the same number which were collected at the surface at Station 

 262, in latitude 20' N., near Hawaii. At Station 263, lat. 17' 33' N., long. 

 153° 36' W., the surface Radiolarians had increased in number to nearly 

 twenty species; at Station 265, lat. 12° 42' N., long. 152 01' W., to nearly 

 forty species, and at Station 267, lat. 9° 28' N., long. 150' 49' W., to fifty, 

 the number of species gradually increasing towards the equatorial current 

 belt. 



As regards the other surface animals noted by the " Challenger," 

 they consisted of Diatoms, Pyrocystis, Noctiluca, Globigerina?, Orbulinoe, 

 Palvinulinse, Diphyes, and other Medusae, Siphonophores, Sagitta, Echi- 

 noderni larvte, and Zoea, near the Hawaiian Islands ; Euphausia, Sergestes, 

 Saphirina, Copepods, Amphipods, Phronimids, Hyperids, Oxyrhynchus, 

 Pteropods, Appendicularite, Alciopa, Annelids and their larvae, Tomopteris, 

 SalptB, lanthiuiB, young fishes, Sternoptyx, Scopelids, Cephalopods, Cteno- 

 phora?, Halobates, Coccospheres, Rhabdospheres, Ostracods, Hyalea, Spirialis, 

 Styliola, Tiedemannia, Stomatopods, Schizopods, Carinaria, Firoloides. These 



