PRELIMINARY REPORT. 107 
than the pelagic Foraminifera and Radiolaria, did not present any pecu- 
liar types; they were the usual pelagic types of the Pacific, such as: 
Siphonophores, Copepods, Amphipods, Pteropods, Cephalopods, Salpae, Dia- 
toms, Pelagia, Sagitta, Ostracods, Pelagic Annelids, Tomopteris, Hyperids, 
Sergestes, Euphausia, Lucifer, Atlanta, Appendicularia, Doliolum, Cocco- 
spheres, Rhabdospheres, Pulvinulina, Sergestes, Alciopa, Macrura, Scopelus, 
Ctenophorx, Cyprinida, Phronima, Stomatopods, Ianthina, fish eggs, young 
fishes, Velella, Physalia, Ostracods, Macruran larvae, Schizopods, Doliolum. 
This line is also characterized by the great number of Diatoms collected, 
and at Station 298 Sir John Murray says that “on the whole there was 
a great change in the general character of the surface fauna, pointing to 
the nearness of a great continent similar to what was observed off Japan 
and elsewhere.” 
The Bathymetrical Range of the Pelagie Fauna. 
With regard to the bathymetrical range of the so-called intermediate 
fauna, the following notes are suggested by the records of the “ Chal- 
lenger” deep tow-net hauls in the Pacific. 
At several of the stations the open tow-nets were hauled at a depth 
of 200 fathoms, and Challengeride and other Radiolarians not found at 
the surface were collected. It does not follow, because the tow-nets 
attached to the trawl and the weights brought up similar organisms to 
those obtained at 200 fathoms or more from the surface, that these types 
are found living all the way from the surface to the bottom, different 
species recurring at sundry bathymetrical ranges. The open nets attached 
to the trawl and weights contained, according to the lists given by Murray, 
only such genera as were also collected by nets sent down to less than 250 
fathoms from the surface, and were probably caught by the trawl nets 
while passing through the upper strata. The experience of Hensen and 
of Chun has been like that of the earlier expeditions of the “ Albatross,” 
as well as the present one, that at the depth of 250 fathoms there is a 
very marked decrease in the number of organisms collected as compared 
with those living in a belt nearer the surface. It does not appear from 
the data given by Sir John Murray that there is any proof of the exist- 
