T11E VOYAGE OF H.M.S. CHALLENGER. 
Station 64. 
( ri«>M 
si'hfacis X«n> 
l»;>4 
Surface Organisms. — The following species are recorded from the surface at 
Station : — 
Radiolaria (Haeckel, Zool. pt. 40). 
Aavsphipm inflata, Haeckel. 
Xiphostylus anlea , Haeckel. 
Spongellipsis aplysina, Haeckel. 
Eucyrtidium scalarium, Haeckel. 
Lithocampe qiiadrarticulata, Haeckel. 
this 
Brachyura (Miers, Zool. pt. 49). 
Nautilograpsus minutus (Linne). 
Gasteropoda (Watson, Zool. pt. 42). 
Ianthina rotundata , Leach. 
Litiopa melanostoma, Rang. 
In addition, the following are recorded in the note-books : — Tetmstemma fuscum 
X 'utilogrags'us, Scylleea pelagica, Sal pee., and the surface organisms mentioned on the 
1 7th. The absence of Phyllosoma, Zoeae, and Stomatopod larvae is to be noted. 
Moseley writes: “Murray went out and caught a number of very fme specimens of 
/ if a with Scyllwa pelagica and Nautilograpsus minutus living attached and simu- 
i in some instances the colour of that animal and its float, being of a slightly mottled 
blue. Some Fucus (nodosus ?) of a bright yellow colour was found floating in a perfectly 
! \ iuj condition This we have not met with before, but only Sargassum bacciferum.” 
Will moes-Suhm writes: “On closer examination the specimens of Nautilograpsus 
w«t> found to be covered by small brown spots, which turned out to be little parasitic 
Nenicrteans ; these animals have not hitherto been found living as parasites. The Nemer- 
: oj i s a mull ordinary Tremacephalid, presenting no changes adduced by parasitism ; 
from its colour I have called it Tetrastemma fuscum, n.sp.” 
Hr a nos 65. 
Station 65 (Sounding 129), Bermuda to Azores (see Chart 6 and Diagram 3). 
June 21, 1873 ; hit, 36° 33' N., long. 47* 58' W. 
Temperature of air at noon, 74 ’8 ; mean for the day, 73°'3. 
Temperature of water : — 
Surface, . 
72-5 
900 fathoms, 
400 
100 fathoms, 
640 
1000 
II • • 
39-3 
200 „ 
63-5 
1100 
II • • 
38-7 
300 „ 
61-2 
1200 
li • • 
38-4 
400 „ 
572 
1300 
II • • 
381 
500 „ 
520 
1400 
II • # 
37-8 
600 
45-2 
1500 
li * * 
37-5 
700 „ 
420 
Bottom, 
36-2 
800 „ 
410 
Density at 60' F. 
at surface, 1 02721 ; 
bottom, 
1-02598. 
