140 LIVERPOOL BIOLOGICAL SOCIETY. 
appearance of the hepatic cecum in the living condition, 
and fig. 10 shows some of the pigmented yellow (a) and 
red (b) liver cells set free. 
Coryphella rufibranchialis, Johnst. 
This species is considered to be a synonym of Coryphella 
landsburg: by Trinchese, Vayssiere and others, but we are 
convinced of its distinctness. In C. rufibranchialis the white 
zone on the cerata is very wide, and the cnida differ from 
those of C. landsburg: (see Pl. VIII. figs 2 and 9.) It 
has been added to the Fauna of Puffin Island by Mr. 
Thompson who collected three specimens on the south 
spit in April, 1890. 
As this 1s a common species in this neighbourhood, and 
we have been able to examine a number of very fine speci- 
mens, we give the following notes taken from the animal 
in the living condition :— 
The body is white and less translucent than in Facelina 
coronata and many other Eolids; it is more solid and fleshy- 
looking. The front of the foot is prolonged laterally to 
form a pair of conspicuous curved processes. The tail is 
very long and tapers to a fine point. The largest speci- 
mens we have taken at Hilbre Island during the last year 
measure 4°5 cm. in length. 
The dorsal tentacles are of the same white colour as the 
body. They are tapering and are not laminated, but are 
irregularly corrugated along their edges. There is a little 
opaque white pigment scattered over their tips. 
The oral tentacles are of the same form, length, and 
colour as the dorsal tentacles. In one of our specimens 
we found the left oral tentacle bifurcating into a pair of 
long slender divergent branches with very sharp points. 
The cerata are large and awkward looking, and the ani- 
mal has a habit of erecting them in a bristling manner and 
of waving them about energetically with a somewhat jerky 
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