SPICULATION OF FEESH-WATEE SPONGES. 



Trans. E. S. C, 1889. 



Sec. IV. Plate IV. 



(1) SpongiUa fragilis X 200. 



..iOtSS^' 



(2) Spongilla MacKayi X 200. 



(.3) Spongilla lacustris X 200. 



C^l (5) Meyenia Everetti X 200. 



- / ^>» 



^^^^ 



(4) Spongilla Terrae Novae X 200. 





«vT 



(6) Meyenia fluviatilis X 200. 



(9) Heieromeyenia Pictovensis X 200. 



(10) Tuhella Penn»ylvanica X 200.'0. 



To illustrate Mr. A. H. MacKay's paper on Fresh-water Sponges. 



