Sea-slugs 



301 



w a H (| u i t e 

 natural to our 

 little nudi- 

 branch." This 

 slug is about 

 half an inch 

 long, of an oval 

 shape, variably 

 coloured pale 

 yellow, clouded 

 with clusters 

 of small dark- 

 grey spots. 

 The head is 

 small, and the 

 tentacles ap- 

 pear to be 

 represented by 

 mere lobes. 



The cerata are 



arranged in six 



or seven rows 



along each side. 

 The Green 



Elysia {Elysia 



viricUs) has its 



body depressed 



like that of a 



leech, but the 



head is more 



elevated and 



adorned with a pair of ear-like 



of the eyes. It is little more than half an inch 



l'l1Wll!!!!!!!l!!!'!!!!!!!!!!!!!K!!!''!iS!^ 



Green Elysia (enlarged) 



tentacles in front 



