JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION. OF PLATE III, 
Illustrating Mr. Roper’s paper on some New British 
Diatomacecz. 
Fig. 
1.—Lupodiscus tesselatus. 
db. Ditto, structure highly magnified, 
2.—Coscinodiscus labyrinthus. 
b. Ditto, structure highly magnified. 
3.—C. (?) stellaris. 
4.—C. (?) ovalis. 
5.—<Actiuocyclus triradiatus. 
b. Ditto, structure highly magnified. 
6.—WNitzchia virgataab. 
a. Side view. 
b. Front view. 
7.--Amphora sulcata, 
8.—d, membranaced. 
6. Ditto, — represents self-division. 
9.—Cocconeis seutellum, var. y. 
10.—Navicula liber, var. B. 
11.—Pleurosigma transversale, var. p. 
12.—Coscinodiscus concinnus. 
a. Ditto, structure highly magnified. 
