1865.] DAWSOiq- COAL-FORMATION. 145 



of aquatic animals. It has a true Stigmarian underclay. I suppose 

 it to have been a swamp or forest submerged and occupied by fishes 

 while its vegetation was still standing. It contains remains of fishes 

 of the genera Ctenoptychius, Diplodus, Rhizodus, and Palceoniscus. 

 It also contains Cy there, Naiadites, and Spirorhis. In the other 

 beds which contain fish-remains, most of these consist of small Lepi- 

 doganoids, but there are occasional teeth and scales of large species 

 of Rhizodus, and also teeth and scales of Selachian fishes of consider- 

 able size. 



19. Land-animals. — The Coal-formation of I^Tova Scotia has afforded 

 the remains of eight species of Keptiles or Batrachians, belonging to 

 ihegQTiQiY2iHylonornus,Baphetes,Dendrerpeton,Hylerpeton, smdEosau- 

 rus ; of one Myriapod, Xylohius sigillarice ; of one land snail, Pujm 

 vetusta ; and of one insect. All of these, except one of the reptiles, 

 have been found at the Joggins. I have nothing in regard to them 

 to add to what I have already published in my Memoir on ' Air- 

 breathers of the Coal Period.' 



Y. Appendix. 



Descriptive List of Carboniferous Plants found in Nova Scotia and 

 New BrunsivicJi'. 



[Abridged and corrected from " Synopsis of the Carboniferous Flora of Nova 

 Scotia," Can. Nat. vol. viii.] ^ 



Dadoxylon, linger. 



1. Daboxylon Acadiantjm, spec. nov. PI. V. figs. 4-6. 



Large trees, usually silicified or calcified, with very wide wood- 

 cells, having three or more rows of small hexagonal areoles, each 

 enclosing an oval pore ; cells of meduUary rays one-third of br(|^dth 

 of wood-cells, and consisting of twenty or more rows of cells super- 

 imposed in two series. Kings of growth indistinct. 



M. C.t, Joggins, Port Hood, Dorchester (J. W. D.). 



2. D. MATERiAEiuM, spcc. nov. PI. Y. figs. 7-9. 



Wood- cells less wide than those of the last ; two to rarely four 

 rows of hexagonal disks. Medullary rays very numerous, with 

 twenty or more rows of cells superimposed in one series. Eings of 

 growth slightly marked. Ap23roaches in the character of its woody 

 fibre to D. Brandlingii ; but the medullary rays are much longer. 

 Som'e specimens show a large Sternbergian pith, with transverse 

 partitions^. Yast numbers of trunks of this species occur in some 

 sandstones of the Upper Coal-formation. 



M. and U. C, Joggins, Malagash, Pictou, &c. (J. W. D.) ; Glace 

 Bay {H. Poole) ; Miramichi {G, F. Mattheiv). 



^ The illustrations are principally from photographs by my son George M. 

 Dawson, and for the sake of economy have been confined to small and character- 

 istic portions of the specimens. 



t U. C, M. C, and L. C, indicate the Upper, Middle, and Lower Coal-for- 

 mations. 



i Canadian Naturalist, 1857. 



