MUSEUM OF COMPARATIVE ZOOLOGY. 43 
A second haul was then made with the open tow-net from the 200 
fathom level to the surface without towing at that depth. The net was 
drawn up more slowly, but the contents of the net differed in no way 
from the preceding hauls, except that the quantity of pelagic life ob- 
tained was naturally much less than when we spent in addition fifteen 
minutes in towing at the 200 fathom level. In hauling the net from 
100 fathoms to the surface in a still shorter time, the amount of mate- 
rial was still more reduced. The surface tow-net contained scarcely 
anything, the sea being quite rough, a fresh trade wind blowing. 
These hauls, made with open tow-nets, showed little variety in the 
constitution of the pelagic fauna at 100 and 200 fathoms, the surface 
animals having been driven to deeper waters by the disturbed state of 
the upper layers. We obtained nothing in the hauls from 100 and 200 
fathoms which had not on some other occasion been obtained in the 
surface tow-net, though not in as great quantities as when towing at 
greater depths. 
On the evening of the same day, it being calm, the surface tow-net was 
crowded with Nautilograpsus, and contained also nearly every species we 
had caught in the morning while towing at depths of 100 and 200 fath- 
oms, and the number of specimens was quite as large as in the greater 
depths. The Stomobrachium, Liriope, and Saphenia, and likewise the 
Diphyes and Crystallodes, were more numerous perhaps, while Doliolum 
and Sagitta constituted the bulk of the material of the tow-net. 
On the 9th of April, the Tanner net was sent down to tow at 175 
fathoms, and thence hauled open to the surface. The net contained 
numerous specimens of Doliolum, Salpz, Sagittee young and old, trans- 
parent Annelids, Tomopteris, masses of Copepods, Leucifer, Sergestes, 
Schizopods, Sapphirina, Hyperide, Phronima, Ostracods, a few small 
Stomobrachium and Liriope, and numerous bells of three species of 
Diphyes and of Crystallodes, a few specimens of Pneumodermon, of 
Atlanta, of Hyalea, and of Creseis, and the same species of Rhizopods 
found in the surface tow-net at the same locality. No fishes were ob- 
tained in this haul. 
The haul of the surface tow-net at this locality, though towed on 
a smooth and calm sea in a bright sun and with no wind, was compara- 
tively poor. The Rhizopods were more numerous than from the deeper 
haul, but the number of species and of individuals of the Crustacea, 
Worms, and Siphonophores was much smaller, and there were no 
Pteropods. 
Copepods with large blue eggs were obtained in both these hauls, 
