316 PEOCEEDINGS OF THE GEOLOGICAI. SOCIETY. [May 7, 



33. Selagin-ites eobmostjs, Dawson. 



^Canad. Nat.' vol. vi. p. 176, figs. 11, 12; Knorria(?), Quart. 

 Journ. Geol. Soc. vol. xv. p. 486, fig. 5. 



^' Stems covered witlijlat, hroad, angular, imbricating scales of unequal 

 size, and ornamented with minute scaly joints.'' 



This is the plant noticed in my paper on the plants of Gaspe* as 

 probably a Knorria. Better specimens have subsequently enabled 

 me to describe it as above, and to refer it to Selaginites, without, 

 however, maintaining that it is certainly a Lycopodiaceous plant. 

 It occurs in the shales associated vtath the Devonian coal-seam at 

 Gaspe. 



34. Leptophlcetjm ehombigtjm, nov. gen. et sp. PI. XII. fig. 8 ; and 



PI. XYII. fig. 53. 



Stem covered with contiguous rhombic areoles, each with a single small 

 scar a little above its centre, and above this a very slight furrow. 

 Decorticated stems with spiral ]punctiform scars in slight depressions. 

 Baric thin. Pith-cylinder very large, with transverse markings of 

 the character of Sternbergia. 



This plant seems to have presented a straight cylindrical stem, 

 supporting leaves with thick bases, and of which only traces remain. 

 Its bark was thin ; and it seems to have had a thin woody cylinder, 

 within which was a very large Sternbergia-i^ith. One specimen 

 shows a growth of young wood at the extremity of the stem, on 

 Avhich the rhombic scars are only imperfectly developed ; and at the 

 extremity of this younger portion, the transverse structure of the 

 pith exhibits itself through the thin bark in such a manner that this 

 portion, if separated from the remainder of the stem, might be 

 described as a Sternbergia. This is another peculiar phase of these 

 remarkable, transversely wrinkled piths that seem to have belonged 

 to so many of the Carboniferous and Devonian plants. The mark- 

 ings on the surface of the stems of this plant somewhat resemble 

 those of Lepidodendron tetragonum, Ulodendron minus, and Loma- 

 tojloyos crassicaule, but the vascular scars and the general structure 

 of the stem are quite different. Still I believe this plant to be more 

 nearly allied to Ulodendrece and Lepidodendreoe than to any other 

 plants. 



35. CoEDAiTES EoBBH, Dawsou. PL XIY. fig. 31 a, b, c. 



Leaves elongated, lanceolate, sometimes three inches wide and afoot 

 in length. Veins equal and parallel. Base broad, clasping the stem,, 

 point acuminate. 



When this species was described in my paper in the ' Canadian 

 Naturahstt/ only very imperfect specimens were in my possession; 

 but numerous and fine specimens recently found now enable me 

 more perfectly to characterize the species. The leaves vary much in 

 form ; and in their young state, as represented in fig. 31 a, were 



^ Quart. Journ. Geol. Soc. vol. xv. p. 486. t May 1861, p. 168. 



