(178) 



On specimens from Cumbrse, we observe no appearance of fruit, but 

 on others from Millport, minute spore-like bodies are not unfrequent. 



E. pusillus, to which this is very closely allied, has generally more 

 equal and rather shorter joints, and is almost always abundantly fruited, 

 the spores mostly opposite, whereas in the present they are always 

 solitary. E. pusillus we have always found parasitical on the smaller 

 Algae in tide-pools, where it is not unfrequent in the summer months. 

 It is also considerably smaller than the present species. 



EXPLANATION OF PLATE CLXXVIII. 



Fig. 1. — Eetocarpus crinitm, natural size. 

 2. — Branch. 

 3. — Branch with fruit. 

 4. — -Joints of the stem. All magnified. 



