106 EXrEDITION OF THE "ALBATROSS," 1S90-1900. 



genera occur, of course, in different couiljinatious both in nuniber of species 

 and abundance of specimens at the stations occupied, but none of tlieni 

 were very marked types, or types which had not a wide geographical 

 distribution in the tropical Pacific, as can be noted by comparing the 

 above list with the notes of the contents of the surface hauls made by the 

 " Albatross " in a nearly parallel line, but several hundred miles to the 

 eastward. 



As has been shown, j). 94, from the examination of the bottom deposits, 

 a large number of pelagic Foraminifera were obtained by the " Challenger" 

 on the line Tahiti to Valparaiso, as well as pelagic Radiolarians. Going 

 south from Tahiti, the "Challenger" obtained three species of Radiolarians 

 on the surface at Station 282, lat. 23° 46' S., long. 149° 59' W., seven at 

 Station 284, lat. 28' 22' S., long. 141' 22' W., and no less than forty-two 

 at Station 288, lat. 40" 03' S., long. 132 58' W., the point at which the 

 " Challenger " turned east toward Valparaiso, distant nearly 3000 miles. 

 Along that line which runs somewhat north of the current setting east, 

 in a somewhat higher latitude, the number of surface Radiolarians collected 

 was quite remarkable. At Station 289, lat. 39' 41' S., long. 131' 23' W., 

 seven species are enumerated, four from Station 290, lat. 39° 16' S., long. 

 124' 07' W., eighteen at Station 291, lat. 39' 13' S., long. 118' 49' W., the 

 same number at Station 295, lat. 38' 07' S., long. 94° 04' W., and five at 

 Station 297, lat. 37' 29' S., long. 83' 07' W. 



The other surface organisms found by the "Challenger" going south 

 from Tahiti to Station 288, in lat. 40' 03' S., consisted of Pteropods, Dia- 

 toms, IIastigeriua% Acanthometrre and other Radiolarians, Siphonophoroe, 

 Ctenophoras, Ecliinoderma larvas, Sagitta, Cyprinida, Saphirina, Copepods,^ 

 Euphausia, Sergestes, Lucifer, Atlanta, Appendicularia, Scopelids, Ilalobates, 

 Clio, Coccospheres, Rhabdospheres, Globigerinas, Alciopa, Tomopteris, Salpa?, 

 young Lameliibranchs, Phroniinids, Ilyperids, Stomapod larva;, Thysano- 

 poda, Benthocaris, Medusae, Ostracods,'^ Amphipods, Schizopods, Doliolum, 

 Scopelids. 



On the line from Station 288 to Valparaiso the surface organisms, other 



' The Copepods increased as the "Challenger" went south from Tahiti. 



" The number of Ostracods at Station 296, lat. 38° OC S., long. 88° 02' W., is very striking. 



