| Fig. | | Page | | BIDDULPHIA | | 1-2-3-4 | Biddulphia biddulphiana (Smith) | 31 | | 5 | Biddulphia rhombus (Ehr.) Wm. Sm. | 32 | | 6 | Biddulphia granulata Roper | 32 | | 7 | Biddulphia turgida (Ehr.) Wm. Sm. | 32 | | 8 | Biddulphia smithii (Ralfs) V. H. | 32 | | 9 | Biddulphia lÆvis Ehr. | 33 | | 10 | Biddulphia lÆvis Ehr. Sporangial frustules (260 diam.) | 33 | | EUNOTOGRAMMA | | 11 | Eunotogramma lÆve Grun. | 33 | | | | Fig. | | Page | | BIDDULPHIA | | 1-2-3-4 | Biddulphia biddulphiana (Smith) | 31 | | 5 | Biddulphia rhombus (Ehr.) Wm. Sm. | 32 | | 6 | Biddulphia granulata Roper | 32 | | 7 | Biddulphia turgida (Ehr.) Wm. Sm. | 32 | | 8 | Biddulphia smithii (Ralfs) V. H. | 32 | | 9 | Biddulphia lÆvis Ehr. | 33 | | 10 | Biddulphia lÆvis Ehr. Sporangial frustules (260 diam.) | 33 | | EUNOTOGRAMMA | | 11 | Eunotogramma lÆve Grun. | 33 | |
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