"The bones of Dendrerpeton hitherto found, as well as those of the smaller species, have been obtained from the interior of erect Sigillariæ, and all of those in one of the many beds which, at the Joggins, contain such remains. The thick cellular inner bark of the Sigillaria was very perishable; the slender woody axis was somewhat more durable; but near the surface of the stem, there was a layer of elongated cells, or bast tissue of considerable durability, and the outer bark was exceedingly dense and indestructible. Hence an erect tree, partly imbedded in sediment, and subjected to the influence of the weather, became a hollow shell of bark. When they remained open for a considerable time, they would constitute pitfalls into which animals walking on the surface might be precipitated. When the surface was inundated all such remains would be covered and imbedded in the sediment. These seem to have been the precise conditions of the bed which afforded these remains." (Dawson, 223, 1894.) Fifteen species have been described from the Joggins deposits. Two are known from the Albion mines, south Nova Scotia, where were obtained the remains of _Baphetes planiceps_ Owen and _B. minor_ Dawson. The following 17 species of Amphibia are known from the Carboniferous of Canada: _Amblyodon problematicum_ Dawson. Teeth and fragments. _Baphetes minor_ Dawson. An incomplete mandible. _Baphetes planiceps_ Owen. An incomplete cranium from Albion. _Dendrerpeton acadianum_ Owen. A jaw, limb bones, and fragments. _Dendrerpeton oweni_ Dawson. Phalangeal bone and fragments. _Eosaurus acadianus_ Marsh. Two dorsal vertebræ. _Fritschia curtidentata_ Dawson. A mandible, vertebræ, ribs. _Hylerpeton dawsoni_ Owen. Mandible, teeth and incomplete maxilla. _Hylerpeton intermedium_ Dawson. Mandible and portions of skull. _Hylerpeton longidentatum_ Dawson. Fragments of mandible and skull. _Hylonomus latidens_ Dawson. Mandible and teeth. _Hylonomus lyelli_ Dawson. Incomplete skeleton and part of skull. _Hylonomus multidens_ Dawson. Fragments of skull. _Hylonomus wymani_ Dawson. Mandible and vertebræ. _Platystegos loricatum_ Dawson. Incomplete skull, vertebræ. _Smilerpeton aciedentatum_ Dawson. Teeth, ribs, fragments. _Sparodus_ sp. indet. Teeth, scales.