. Maryland geological survey. PTERIDOPHYTA. PLATE XXXV. PAGE Figs. 1-3. Onychiopsis psilotoides (Stokes and Webb) Ward 274 1. Hell Hole, Virginia (after Fontaine). 2, 3. New Reservoir, D. C. (after Fontaine). 534 MARYLAND GEOLOGICAL SURVEY. LOWERiCRETACEOUS, PLATE PTERIDOPHYTA. PLATE XXXVI. PAGE Figs. 1-6. Onychiopsis nervosa (Fontaine) Berry 279 1, 2. Specimens from Chinkapin Hollow, Virginia (after Fontaine).3, 4. Specimens from Federal Hill, Maryland (after Fontaine).5, 6. Specimens from near Glymont, Maryland. Figs. 7-9. Onychiopsis psilotoides (Stokes and Webb) Ward 274 Showing var

. Maryland geological survey. PTERIDOPHYTA. PLATE XXXV. PAGE Figs. 1-3. Onychiopsis psilotoides (Stokes and Webb) Ward 274 1. Hell Hole, Virginia (after Fontaine). 2, 3. New Reservoir, D. C. (after Fontaine). 534 MARYLAND GEOLOGICAL SURVEY. LOWERiCRETACEOUS, PLATE PTERIDOPHYTA. PLATE XXXVI. PAGE Figs. 1-6. Onychiopsis nervosa (Fontaine) Berry 279 1, 2. Specimens from Chinkapin Hollow, Virginia (after Fontaine).3, 4. Specimens from Federal Hill, Maryland (after Fontaine).5, 6. Specimens from near Glymont, Maryland. Figs. 7-9. Onychiopsis psilotoides (Stokes and Webb) Ward 274 Showing variation in form and venation of three corresponding pin-nules from different fronds. X 3. 535 MARYLAND GEOLOGICAL SURVEY. LOWER CRETACEOUS, PLATE XXXVI.

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