^{page 512 note 1} “ Beyrichia” by inadvertence, in the former description.

^{page 512 note 2} In the memoirs here referred to, “ the Pentland Hills ” are given by mistake, instead of Peeblesshire, as the locality.

^{page 513 note 1} Presented to the Geological Section of the British Association at Belfast, August, 1874, by the Committee on the Labyrinthodonts of the Coal Measures.

^{page 513 note 2} This character is not of primary importance, but seems to be available for an arrangement determined by other considerations.

^{page 513 note 3} Orbits unknown.

^{page 514 note 1} Loxomma.

^{page 514 note 2} The Vomerine teeth are unknown, and this genus may therefore require to be removed.

^{page 514 note 3} Of doubtful distinctness.