Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 585
crease in size towards the margin ; inothers a few of the central areolae are the largest, and the rest areof nearly uniform size ; while in others, again, there are radiatinglines formed by areolae of a size different from the rest. Most ofthe species are either marine or are inhabitants of… … Fig. 406.—Structure of siliceous valve of Coscinodiscus oculus iriclis : 1, hexagonalareola of inner or eye-spot layer; 2, areola of outer layer. Professor J. Quekett in connection with zoophytes which had beenbrought home from Melville Island by Sir E. Parry ; and the speciesseem to be identical…
Microscopy
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