SUMMARY OF RESULTS. 
381 
not hitherto obtained, probably because it does not live on the surface but in the sea- Station 129 
weeds of shallow- water regions. Phylliroe was also present, but I am not sure whether 
it is identical with Phylliroe bucephala, which is well known from the North Atlantic 
and Mediterranean, and which is usually accompanied by a small jelly-fish (Discophore) 
attached to its ventral surface (described by Krohn under the name of Mnestra parasitica), 
or whether it belongs to the species upon which Adams founded his genus Acura. Our 
species was taken only to the south of the Cape Verdes, and, as it is quite transparent, 
is very useful for the study of the anatomy of the Nudibranchs. In the skin are many 
glands and silvery spots, which have proved to be chromatophores ; the short intestine, 
terminated on the right side by an anus, is connected with four large lobes of liver, and 
there are also visible the generative organs (especially the two hermaphroditical glands, 
the seminal and ovarial gland with the penis, all running into a genital atrium), the heart 
with its atrium situated behind the ventricle, and the excretory organ (an elongated 
simple tube opening on the right side). There are no organs of locomotion, and branchiae 
are entirely absent, so that the respiration must be cutaneous. In swimming on the 
surface the animal slightly moves the posterior and flattened part of its body when 
gliding along.” 
Station 130 (Sounding 213), Bahia to Tristan da Cuuha (see Chart 16 and Station 130 
Diagram 5). 
October 3, 1873 ; lat. 26° 15' S., long. 32° 56' W. 
Temperature of air at noon, 73 J, 5 ; mean for the day, 70 o, 8. 
Temperature of water : — 
Surface, . 
p 
o cr* 
ZD 
900 fathoms, . 
37-1 
100 fathoms, 
60-5 
1000 
37-0 
200 „ 
54- '3 
1100 
36-9 
300 „ 
48-3 
1200 
36-8 
O 
o 
42 8 
1300 
36-7 
500 
39-0 
1400 
36-6 
600 „ 
38-0 
1500 
36 *5 
700 
37-5 
Bottom, 
34-7 
800 
37-3 
Density at 60' F. :• — 
Surface, 
. 1-02710 
200 fathoms, 
. 1-02614 
4 fathoms, 
. 1-02711 
300 
. 1-02578 
50 ,. . . 
. 1-02690 
400 „ 
. 1-02562 
100 „ 
. 1-02658 
Bottom, 
. 1-02714 
(summary of results chall. exp 
—1893.) 
49 
