PROCEEDINGS OF SOCIETIES. 113 



Coscinodiscus, Ehrenberg. 



C. radiatus, Ehr. — Common. New Brighton in several 

 gatherings, &c. 



C. eccentricus, Ehr. — Common. New Brighton, &c. 



C. concinmts, Sm. — R. Fender, Bidston marsh, June, 1856; 

 New Brighton, April, 1858 — Southport sands, August, 

 1858, G. M. B. 



Eupodiscus, Ehrenberg. 



E.fulvus, Sm. — Bidston marsh, October, 1857. 



E. crassus, Sm. — New Brighton — Southport sands, August. 

 1858, G. i\l. B. 



E. radiatus, Sm. — Southport marsh, June, 1857 ; New 

 Brighton, April, 1858. 



E. Ralfsii, Sm. — Southport marsh, June, 1857; New Brigh- 

 ton, April, 1858. 



Actixocyclus, Ehrenberg. 



A. undulatiiS) Kiitz. — Common. New Brighton, &c. 



A. duodenarius, ") XT tj-u* a T *«'*« -t»-j * i 



A. sedenarius, New Brighton Apnl, 1858; Bidston marsh, 



j.j ■ \ October, 18o7. 



A. octodenanus, ) 



Triceratium, Ehrenberg. 

 T. Favus, Ehr. — New Brighton, April, 1858 — Southport 



sands, August, 1858, G. M. B. 

 T. undulalum, Ehr. — New Brighton, April, 1858 — Southport 

 sands, August, 1858, G. M. B. 



Cyclotella, Kiitzing. 

 C. Kutzingiana, Thw. — Aintree pit, June, 1857; Bidston 

 marsh, August, 1858. 



Var /3. — Thornback pool, Crosby, Sept. 1856. 



C. operctilata, Kiitz. — R. Dee, near Queen's ferry, June, 1858. 



Campyeodiscus, Ehrenberg. 

 C costatus, Sm. — R. Alt, Sefton, July, 1857 ; well in Brom- 



bro' wood, May, 1857. 

 C. spiralis, Sm. — Bidston marsh, October, 1856. 

 C. cribrosus, Sm. — Bidston marsh, October, 1857. 

 C. parvulus, Sm. — Head of Wallasey pool, May, 1857 ; great 

 float, April, 1858. 



Surirella, Turp. 

 S. biseriata, Breb. — Hoy lake, October, 1856, G. M. B. 

 S. linearis, Sm. — Patrick's well, Spital, March, 1857; pit at 



Aintree, June, 1857- 

 S. constricta, Sm. — Bidston marsh, October, 1857. 

 S. lata, Sm. — New Brighton, September, 1858. 



