188 
TTTE VOYAGE OF H.M.S. CHALLENGER. 
Station 30. 
OllOAN'HMM rROM 
Til* SuRTA' K. 
Surface Organisms. — The following species are recorded in the Zoological Reports 
from the North At ntic, April 1873, and from the gulf-weed, south of Bermuda: — 
U 
Cirripkdia (Hack, Zool. pt. 25). 
Lepus a user if era, Linne. From gulf-weed. 
Macrura (Spenee Bate, Zool. pt. 52). 
Sergestes edivardsii, Kroyer. 
Latreutes ensiferus (M.-Edwards). From gulf-weed. 
Jlippolytc bidentatus, ri.sp. From gulf-weed,. 
Pahvmon natator, M.-Edwards. From gulf-weed. 
Brachyura (Miers, Zool. pt. 49). 
Neptunus (Nept units) sayi, M.-Edwards. From gulf-weed. 
Nautilograpstis minutus (Linne). From gulf-weed. 
Ckphalopoda (Iloyle, Zool. pt. 44). 
Tcleoteuthis caribbxa (Lcsueur), Verrill. 
Fishes (Gunther, Zool. pts. 6 and 78). 
P senes cycinophi'ys, C.V. From gulf-weed. 
Antenna rius marmoratus, Gunther. From gulf- weed. 
Exocoetus spilurus, Gunther. From gulf- weed. 
,, a finis, Giinther (?). From gulf-weed. 
Syngnathus pelagicus, Osbeck. From gulf-weed. 
Moseley writes : “We are at last amongst large patches of the gulf-weed. 
From the deck at noon patches, some nearly half an acre in extent, were to be 
.-<•< n on tin- surface in every direction. The bright yellow of the weed contrasts most 
beautifully with the deep blue of the sea. The sea was perfectly filled with Oseillatoriaceae 
of the usual two forms, fasciculate and globular. These little bodies reflect light strongly, 
at 1 from the deck the water appeared as if full of small particles of mica in suspension. 
S' ; ir ' <1 Iloai -■ of Surgassmn, covered with white Membranipora , u r ere floating about 
on the surface in considerable quantities, and w r ere puzzling to make out from a distance. 
“ I went with Murray to overhaul some of the weed-beds. AVe got plenty of shrimps 
and < •! d> , of which the weed is full, also two small Cephalopods and sortie small (young) 
ir, ■ fi -h. The whole of the animals in the gulf-weed have acquired in their colouring 
rno.-t r« n irkabh- protective resemblance to it. The crabs and shrimps are of a yellow 
<oh>ur exactly lik<* that of the weed, and have markings of white which represent the 
Tubi'tin/sn " constantly present upon its surface. The largest shrimp has a dark 
