PROCEEDINGS OF SOCIETIES. 117 



P. viridis, Sm. — Common. Patrick's well, Spital, &c. 



P. oblonga, Sm. — Well in Brombro' woods, May, 1857; well 



at JMoreton, Cheshire, May, 1857- 

 P. distaus, Sm. — New Brighton sands, April and Sept. 1858. 

 P. peregrina, Ehr. — Very common in brackish water. 

 P. acuta, Sm. — Bidston marsh, October, 1856; Rock ferry, 



March, 1857. 

 P. direct a } Sm. — New Brighton, October, 1858. 

 P. radiosa, Sm. — Frequent. Bidston marsh, &c. 

 P. gracilis, Ehr. — Common in Bidston marsh, and other 



brackish water localities. 

 P.viridtda, Sm. — Bidston marsh, July, 1856. 

 P. Cgprinics, Ehr. — Common in many localities subject to 



marine influence. 

 P.Johnsonii, Sm. var. /3. — Bootle shore, Dec, 18.58, G. M. B. 

 P. stanro/ieiformis, Sm. — Hoylake, October, 1856, G. M. B. 



Highfield, L. H. 

 P. mesolepla, Ehr. — Patrick's well, Spital, March, 1856 ; well 



at Aloreton, Cheshire, Ma}', 1857, &c. 

 P.interrupta, Sm. — Storeton, June, 1856, L. H. 

 var. (5. — Storeton, June, 1856, L. H. Bidston 



marsh, October, 1856. 

 P. borealis, Ehr. — Thornback pool, September, 1856; Moss 



at Rock ferry, October, 1857. 

 P. Integra, Sm. — Not uncommon. Thornback pool, Sep- 

 tember, 1856 ; River Alt, near Sefton, July, 1857, &c. 

 Stauroneis, Ehrenberg. 

 S. PJmnicenteron, Ehr. — Not uncommon. Well in Brombro* 



May, 1857, &c. 

 S. gracilis, Ehr. — Well at Moreton, May, 1857; Storeton, 



June, 1856, L. H. 

 S. acuta, Sm. — Well in Brombro' woods, May, 1857- 

 S. salina, Sm. — Seacombe, April, 1858. 

 S. crucicula, Sm. — Wallasey pool, April, 1856; and April, 



1857 ; Southport marsh, June, 1857. 

 S. anceps, Ehr. — Not uncommon. Rock ferry, March, 1857; 



well at Moreton, May, 1857, &c. 

 S. linearis, Ehr. — Thornback pool, Crosby, September, 1856; 



Moreton well, May, 1847. 

 S.pulc/tella,Sm. — New Brighton, September, 1858; South- 

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

 var. [Navicida angulata, Breb.) New Brighton 



sands, May, 1859. 



Pleurosigma, Smith. 

 P. rigidum, Sm. — Southport sands, August, 1S58, G. M. B. 



VOL. VIII. k 



