Station 98. 
Oroanismb fhom 
Sukfaci-N ctv. 
Station 99. 
320 THE VOYAGE OF H.M.S. CHALLENGER. 
Surface Organisms. ^-The following species are recorded from the surface at this 
Station : — 
Pelagic Hemipteba (White, Zool. pt. 19). 
Halobates wiillerstorffi, Frauenfeld. 
Fishes (Gunther, Zool. pt. 78). 
Exocoi tus ohtuslrostris , Gunther, or Exocoetus evolans, Linne (young). 
Besides the organisms mentioned yesterday, the following are recorded in the note- 
k : — Diphycs , Sagitta, Planaria, Mysis, Phyllosoma , Halobates, Pneumonodcrma- 
like Pteropod, Cranchia, Scilpa , and young Pleuronectids. 
Willemoes-Suhm writes: “At night the sea was very phosphorescent, and as the 
-hip was making only 3 or 4 knots several good hauls of the tow-net were obtained. At 
12.30 v.m. a great many animals were in the net, but an hour later very little was 
procured ; a squall was expected, and the sea might have been somewhat rougher, but 
not much. Several Pleuronectids in different stages of growth, the largest an inch, 
smaller ones 12 to 13 mm. in length, were obtained; they were perfectly symmetrical 
ami homocercal, and the largest specimen had some reddish spots, but genitals were not 
observed. There was a large Phyllosoma measuring 4^ inches between the tips of 
the legs.” 
Moseley writes : “ Two large porpoise-like Cetacea were seen alongside. A pelagic 
(Yphalopod, apparently of the genus Cranchia, was taken; it was perfectly transparent, 
which allowed the structure and movements of organs to be seen.” 
Station 99 (Sounding 170), St. Vincent to St. Paul’s Rocks (see Chart 12). 
August 15, 1873 ; lat. 7° 53' N., long. 17° 26' W. 
Temperature of air at noon, 76 0, 3 ; mean for the day, 76°T. 
Temperature of water : — 
Surface, .... 
78-0 
300 fathoms, . 
45-8 
50 fathoina, 
63-2 
400 „ 
42-2 
100 
56-2 
500 „ . . 
41-4 
200 „ ... 
498 
Density at GO’ F. at surface, 1 02600. 
At 9 a.m. got up steam, and at 10 a.m. shortened and furled sails, and proceeded 
mi A - -t* am. At 1 f.m. stopped to take a series of temperatures down to 500 fathoms. 
At 5.1 p.m. completed temperature observations, and made sail. Sea phosphorescent. 
