S30 -. THE ALG OF THE CLYDE SEA AREA. 
Order CLADoPHORACES. 
Urosrora Aresch. 
U. nenieilliformis Aresch, = Conferva Youngana Phye. Brit. 
Greenock! ‘On a small buoy, Cumbrae!’’ D. R. et Arnott in 
Herb. Brit. Mus . 
U. flacea eatin = Saggy Lyngbya flacca et L. Carmichaelit 
Phyc. Brit. Cumbrae! D. 
U. speciosa ee at Batt. “Arran,” M. 
Cumromorpna Kiit 
Sapna Kats. = = Conferva melagonium Phyc. Brit. ‘‘ Cor- 
rieglls, ag *M. Cumbrae! D. R. 
Si Conferva Phyc. Brit. ‘ Ailsa,” M. Cumbrae! 
oi litorea Holm. et Batt. = Conferva Phye. Brit. ‘‘ Common,” M. 
(C. linum Tosidssoncnsied “ Arran”’). 
Rurzoctonium Kitz. 
R. tortuosum Kiitz. = Conferva tortuosa Phye. Brit.? Cumbrae! 
_R. “Arran,” Landsb. ‘ Bute!’’ Herb. Grev. In the Revised 
List of British Marine Alga, by Mr. Holmes and myself, Conferva 
tortuosa Phyc. Brit. is referred to Chatomorpha tortuosa Kiitz. ; ; but 
the specimen labelled ‘ Conferva tortuosa, Cumbrae’ Mrs 
Robertson’s collection is undoubtedly a genes i with filaments 
35-56 p broad, thus fully agreeing van Kiitzing’s R. tortuosum as 
understood by Farlow, Foslie, a other 
. riparitum Harv. Cu mbrae! D. Z. ** Arran,”’ Landsborough. 
Bute! Cutler; Brit. Mus 
R. implexum Kutz. = Conferva fev Phye. Brit. Largs Pier! 
J. G. in Herb. Segre “ But ’M. 
Fos lie,* while adopting the name * Phissslontin rigidum, has 
shown that Gobi’s ae is put = with the Conferva implexa of 
Wyatt's Alg. Danm. et Phye. Brit., but, agit to the recognised 
rules of nomenclature, he da ave used the ney name 
*‘implexum,” which has the priority of pablicatiti by nearly seventy 
years. In our Revised List Mr. Holmes and I have given C. implexa 
opinion i we ought to have given R. rigidum as a synonym of 
R waplees == C. implexa, 
eniicinn of this species in Mrs. are se s collection has 
the Atainents 12-25 » in breadth, thus agreeing very closely with 
oslie’s Norwegian (18-25 ») and Major Reinbold’s Baltic 
(12-20 ») specimens. 
* ochianum Kitz. Cumbrae! mixed with Enteromorpha 
clathrata, Hennedy in Herb. Robertson. When examining under 
the microscope a — from Cumbrae, labelled in Mr. Hennedy’s 
handwriting, ‘‘ Enteromorpha ramulosa in its old state. Cumbrae 
June 28th, 61, ” I was delighted to find a quantity of this is very 
slender Rhizoclonium mixed with the Ente —— The filaments 
of the Cum © specimen were only 9-10 p bro: 
Contribution to the Knowledge of the Marine Alga of Norway, p. 140. 
