Palaeontologie. 205 



Series (Lower Carboniferous), and the Lower. Middle and Upper 

 Coal Measures (Upper Carboniferous). It is probably one of the 

 most important contributions to the Lower Carboniferous Flora 

 of B r i t ai n. 



Beginning with the plants from the Calciferous Sandstone 

 Series, several Algae, belonging to the genus Bythotrephis, are 

 recorded, and one species B. Scotica is described and figured. 

 Among the ferns, Calymmatotheca bifida and several species 

 of Sphenopteris and Rhacopterts, with Cardiopteris polymorpha 

 and Alcicornopterls convoluta are indentified. A new genus 

 Eskdalia has been founded for fern stems having a smooth 

 cortex; and slightly distant, spirally arranged oval scars, with 

 the vascular cicatrice placed tovvards the upper part of the 

 scar. To this genus the plant formerly termed Caulopteris 

 minuta is assigned, and further figures of it are given. 



The Equisetaceae are represented by Asterocalamites scro- 

 biculatus and Volkmannia sp. Lepldodendron Veltheimii, Bo- 

 throdendron Wükianum, B. Kidstoni, and species of Lepldo- 

 phyllum, Lepldostrobus, and Stigmaria represent the Lycopo- 

 diaceae. Ptilophyton plumula, Schutzia sp., and Bythrotre- 

 phis graclUs (figured) complete the list from this horizon. 



From the Carboniferous Limestone Series, the most inter- 

 esting specimens are Lepidodendron Glincanum (Eich.), of 

 which several figures are given, and new species of Slglllarla, 

 named S. Canobiana, and of Stigmaria [Stigmaria {? Stigmari- 

 opsis) rimosiformis] which are described and figured. 



The Lower Coal Measure flora includes Sphenopteris obtu- 

 siloba, to which species the author woulcl refer all the Con- 

 tinental specimens which have been described under Artis', name 

 6 1 . tri/o/iata, and species of Eremopteris, Mariopteris, Alethop- 

 teris, Neuropteris , Calamites, Lepidodendron etc., most of 

 which are common in, and well known from British Carboni- 

 ferous rocks. 



From the Middle Coal Measures numerous plants including 

 Calamites Schätzet, C. pauclramis (figured), and Cordalcarpus 

 Cordal (figured), with two new species Palaeostachya Ettlngs- 

 hausenl, and Plnakodendron Macconochlet are described and 

 figured. In the latter plant, the leaf scars are distant, upright, 

 oval, and very small. The cortex is ornamented with a very 

 fine irregulär mesh-work, formed of little ridges. The vascular 

 cicatricules are not visible. 



The Upper Coal Measures, which have previously only been 

 known to occur in Britain in South Wales, and the 

 Southwest Coal-fields of England, have yielded: ? Pecop- 

 terls arborescens, Alethopterls Serllt, Neuropteris flexuosa, An- 

 nularla stellata, and other species. Lepidodendron fuslforme 

 (Corda), which occurs here as in the other divisions of the 

 Coal Measures, and which has been considerably confused with 

 other species, is re-described and figured. 



