72 TEANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



by Harvey under the name of Conferva hangioides (Phyc. 

 Brit., pi. 268). Holmes and Batters have on the strength 

 of my observations on the tailed spores of this species, 

 placed it in Areschoug's genus Urospora. I think that 

 such a system, substituting as it does the name of the 

 botanist who simply renames for the name of the first dis- 

 coverer and describer is fundamentally wrong in principle. 

 " Palmam qui meruit ferat," and he who discovers and 

 describes is surely much more worthy of honour than 

 he who merely changes the name originally given. If this 

 system be logically followed out by other botanists, we may 

 expect soon to have a flora in which not a single species 

 appears with the name of the first describer appended to it. 

 Urospora hangioides, Holm, et Batt. ought, in my opinion 

 to be Urospora hangioides, Harv. placed under the genus 

 Urospora, Aresch. In the present paper I have used 

 Holmes and Batters' system, only because I do not feel 

 myself competent to say in all cases who deserves to be 

 named as the authority, without referring (which I cannot 

 at present do) to the original specimens. In Zoology, I 

 believe, the authority given by almost all authors is the 

 name of the first describer, and that seems to me to be 

 the most just principle on which to go in such matters. 



Localities where I have myself collected a species are 

 distinguished by marks of exclamation. 



Series L— GYANOPHYCE^. 

 Cohort L— CHKOOCOCCIN^. 

 Order I. — Chroococcace^. 

 Glceocapsa crepidinum, Thur. 



Puffin I, !, Point of Ayr, 



