Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 408
(Figs. 192, d d); and in some speciesthey have toothed or serrated margins, by which the frustuleslock-together. To this family belongs the genus Hyalodiscus,of which the II. subtills was first brought into notice by the lateProf. Bailey as a Test-object, its disk being marked, like the DIATOMACEJE… … Melosira subflexilis. Melosira variant 289. The family Coscinodiscece includes a large pmportion ofthe most beautiful of those discoidal Diatoms, of which the valvesdo not present any considerable convexity, and are connected bya narrow zone. The genus Coscinodiscus, which is easily distin-guished…
Microscopy · Biology
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