of Edinburgh, Session 1884 - 85 . 107 
Habitat. — South Atlantic, 600 fathoms (Station 320). 3 speci- 
mens, ? 
Japetella, Hoyle.* 
The Body is gelatinous in consistency and semitransparent, and 
more or less oblong in form. The mantle-opening is very wide. 
The Arms are unequal, and the longest only about equal in length 
to the body. The umbrella is small, and the suckers arranged in a 
single row. 
, 
Japetella prismatica , Hoyle. 
Japetella prismatica, Hoyle, Ann. and Mag. Nat. Hist . , ser. 5, vol. xv. 
p. 231, 1885. 
The Body is of gelatinous consistency and semitransparent ; it is 
somewhat longer than broad, flat on the dorsum, and with the median 
ventral region raised into a prominent ridge, which gives the body a 
Japetella prismatica, Hoyle (natural size.) 
prismatic form. The mantle-opening appears to have been wide, and 
to have terminated behind the eyes ; but as it has been torn away 
from the head dorsally, it is impossible to be certain of this. The 
* Named in honour of Professor Japetus Steenstrup. 
