044 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station ‘240. 
Organisms from 
Surface-Nets. 
Density at 60° F.;- 
Surface, . 
25 fathoms, 
50 „ 
100 
. 1-02556 
. 1-02558 
. 1-02544 
. 1-02535 
200 fathoms, 
300 
400 
)) 
JJ 
. 1-02504 
. 1-02520 
. 1-02504 
Depth, 2900 fathoms ; deposit, Red Clay, containing no carbonate of lime (see 
Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 3.15 A. M. shortened and furled sails, and got up steam to sound and trawl. At 
5 A.M. put trawl over, veering 4000 fathoms. At 6 a.m. proceeded under steam. At 
7 A.M. sounded in 2900 fathoms. At 9 a.m. obtained serial temperatures down to 
1500 fathoms. At 3 p.m. commenced heaving in trawl, but at 4.30 p.m. the trawl-rope 
carried away. Made sail. Black albatrosses, black and white petrels, and black 
prion-like birds were seen. 
Distance at noon from Honolulu, 2681 miles. Made good 139 miles. Amount of 
current 19 miles, direction N. 83° E. 
Surface Organisms. — The following species are recorded from the surface at this 
Station : — 
Radiolaria (Haeckel, Zool. pt. 40). 
Cladococcus japonicus, Haeckel. 
Elatomma scoparium, Haeckel. 
Actinomma japonicum, Haeckel. 
Paiiartus spinosus, Haeckel. 
Amphirrhopalum ximorphum, Haeckel. 
Hystrichaspis cristata, Haeckel. 
Ilexalaspis sexalata, Haeckel. 
Plagonium lampoxanthium, Haeckel. 
Dictyophimus gracilii)es, Bailey. 
Sethoconus trochus, Haeckel. 
TIicocamj)e cryptoprora, Haeckel. 
Auloccros furcosus, Haeckel. 
Sagoscena cruciarum, Haeckel. 
Sagmidium crucicorne, Haeckel. 
Aulosphaera trifurca, Haeckel. 
Castanella halfouri, Haeckel. 
Castanidium hethelli, Haeckel. 
Coelodendrum Jldbellatum, Haeckel. 
Amphipoda (Stebbing, Zool. pt. 67). 
Paraihemisto pacijica, n.sp. 
Streetsia challengeri, n.g., n.sp. 
Pteropoda (Pelseneer, Zool. pt. 58). 
Pneumonoderma pacijicum, Dali. 
In addition, the following are recorded in the note-books : — Ethmodiscus and other 
Diatoms, Pyrocystis (some of them having four nuclei), Peridinium tripos and other 
.species (very few), Glohigenna, Orhulina, Ilastigerina, Pullenia, and Pulvinulina, 
Velella, Porpnta, young Ophiurids, Sagitta, Cypridina, Saphirina and other Copepods, 
II} 7 >erid.s, Phronima, Primno, Oxycephalus^ E'uphausia, Dohrn’s Zoea, Halohates, small 
