40 SCUDDER ON" THE DEVONIAN 



Plant-bed No. 7 2 feet. 



This is one of the richest plant-beds of the section. The shales composing it vary 

 much in character in different exposures. They are for the most part of a gray colour 

 and compact, like a fine-grained sandstone, though they pass into a light brownish, very 

 fissile, soft shale, and there are some layers of a very black colour. 



Cordaites Robhii Daws. Very abundant, and in a beautiful state of preservation. — 

 Calamites transitionis Goeppt. Not abundant as good specimens. — 0. cannaeformis 

 Brongn. Rare. — [1) Aster ophyllites acicularis Daws. In very beautiful specimens, 

 very common in certain thin layers. There are two or three other species, occurring 

 also in the overlying beds, which appear to be new. — Sporangites acuminata Daws. 

 Extremely plentiful. — Pinnularia dispalans Daws. Extremely plentiful. — 

 (?) Psilophyton elegans Daws. I have obtained several specimens of a Psilophyton 

 growing in tufts, and closely resembling this species. — Neuropteris polymorpha 

 Daws. Occasional. — Alethopteris discrepans Daws. Abundant, and obtainable in 

 good specimens. — Cyclopteris ohtusa Lesqx. Occasional. — Sphenopteris mar- 

 ginata Daws. — Hymenophyllites suhfurcatus Daws. — Cardiocarpum cornutum Daws. 

 Quite abundant. — C. obliquum Daws. Quite abundant. — C. Crampii Hartt. — 

 Alethopteris Perleyi Hartt. — Sphenopteris pilosa Daws. — Several other plants 

 not yet determined. — Insects. A single insect's wing was obtained from this bed 

 by my father and myself [Platephemera antiqua.] 

 Compact sandstone and coarse shales (barren of fossils) ..... 3 feet. 



Plant-bed No. 8. 1 foot 10 inches. 



Fine-grained, tough, but fissile sandstones, rather coarse shales, often of a greenish 

 cast, and at the top a thin layer of very black shale very rich in plants. The middle por- 

 tion does not contain so many plant remains, but the lower is as well stocked as the 

 leaves of an herbarium. The following are the fossils I have collected from it : — 



Cordaites Hobbii Daws. As usual in great profusion, and in very fine specimens. — 

 Calamites transitionis Goeppt. Occasional. — C. cannaeformis Brongn. — (?) Aste- 

 rophyllites acicularis Daws. Quite common, together with one or two other species 

 apparently new, which occur also in Bed 7. — Annidaria acuminata Daws. Ex- 

 tremely common, especially in certain layers. — Pinnularia disp)alans Daws. Abun- 

 dant. — (?) Lycopodites Matthewi Daws. Rare. — Cyclopteris ohtusa Lesqx. — Cyclop- 

 teris, sp. nov. — Neuropteris polymorpha Daws. Quite frequent in detached pinnules. 

 — Hymenophyllites suhfurcatus Daws. Very common. — Alethopteris discrepans 

 Daws. This is the most abundant fern in this bed. It occurs usually in detached 

 pinnules, though not unfrequently in considerable fronds. — Alethopteris. Besides 

 the above, there are three or four other species, some of which occur also in Beds 

 6 and 7 ^ — Cardiocarpum cornutum Daws. Not very common. — C. ohliquum 

 Daws. Also not very common. — C. Crampii Hartt. Quite common. — Several 

 other species of plants not yet determined. — Insects. Two species, two specimens. 

 One was obtained by my friend, Mr. James Hegan. [Three insects were obtained 

 from the bed: Homothetus fossilis, Dyscritus vetustus and Lithentomum 

 Harttii.J 



1 Probably the species afterwards described (Dr. Dawson's aermlata Hartt, and Pecopteris preciosa Hartt. 

 Report of 1871) as Alelhopteria Pirleyi Hartt, Pecopteris 



