140 LIVERPOOL BIOLOGICAL SOCIETY. 



appearance of the hepatic caecum m the living condition, 

 and fig. 10 shows some of the pigmented yellow (a) and 

 red (b) liver cells set free. 

 Corypliella ruJlhranchiaUs, Johnst. 



This species is considered to be a synonym of Corypliella 

 landshurgi by Trinchese, Vayssiere and others, but we are 

 convinced of its distinctness. In C. rufihranchialis the white 

 zone on the cerata is very wide, and the cnida differ from 

 those of C. landshurgi (see PL VIII. figs 2 and 9.) It 

 has been added to the Fauna of Puftin Island by Mr. 

 Thompson who collected three specimens on the south 

 spit in April, 1890. 



As this is 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 



