274 PKOCEEDiiirGS OF THE GEOLOGICAL sociExx. [Mar. 22, 



In addition to this species and the Caidojpteris above described, 

 Mr. Lockwood's collection contains branchlets of a Lepidodendron, 

 apparently L. gaspianum, which also occurs in Prof. Newberry's 

 collections from the Corniferous Limestone. 



■\.. 



A " 6. Lycopodiies, &c. 



In his recently published ' Paleontologie,' Schimper (evidently 

 from inattention to the descriptions and want of access to specimens) 

 doubts the Lycopodiaceous character of the species of this genus 

 described in my papers in the Journal of this Society from the 

 Devonian of America. Of these L. JRichardsoni and L. Matihewi 

 are undoubtedly very near to the modern genus Lycopodium. 

 L. Vanuxemii is, I admit, more problematical ; but Schimper could 

 scarcely have supposed it to be a fern or a fucoid allied to Caulerpa 

 had he noticed that both ia my species and the allied L.jnnnceformis 

 of Goeppert, which he does not appear to notice, the pinnules are 

 articulated upon the stem, and leave sears where they have fallen off. 

 When in Belfast last summer I was much interested at finding in Prof. 

 Thomson's collection a specimen from Caithness, which shows a 

 plant apparently of this kind, with the same long narrow pinnae or 

 leaflets, attached, however, to thicker stems, and rolled up in a 

 circinate manner. It seems to be a plant in vernation, and the 

 parts are too much crowded and pressed together to admit of 

 being figured or aec^lrately described ; but I think I can scarcely be 

 deceived as to its true nature. The circinate arrangement in this 

 case would favour a relationship to ferns ; but some Lycopodiaceous 

 plants also roll themselves in this way, and so do the branches of 

 the plants of the genus Psilophyton. 



In conclusion, I may state that, when in Edinbiu'gh last summer, 

 Mr. Peach showed me fine and characteristic specimens of rhizomata 

 of Psilophyton from the Caithness beds, and also specimens which 

 seem to show that some at least of the fragments from these beds, 

 which have been referred to Lepidodendron noihum, belong to a 

 different species, more nearly allied to the Cydostigma of Killercan 

 and Gaspe. Mr. Peach has also branches of a Lepidodendron like 

 L. gaspianum, a Cyclopteris allied to C. Brownii, a plant of the 

 nature of Anarthrocamia or Catamites, a Stigmaria, and fragments 

 which may belong to Sigillaria, all from the Devonian beds of 

 Caithness. 



EXPLANATION OF PLATE XII. 



Fig. 1. Caulopteris Loclcwoodi, one-fourth natural size, portion of stem with 



petioles. 

 Fig. 2. Leaf-scar, natural size. 

 Fig. 3. Restoration in part of Caulopteris Loclcwoodi, reduced : a, upper part, 



with petioles ; h, remains of pinnae ; c, middle part, with diverging 



aerial roots ; d, lower part, with aerial roots, perhaps the same with 



Vsaronius erianus, Dawson, MS. 

 Fig. 4. Caulopteris antiqim, Newberry, one-fourth the natural size. 



