170 rKOCEBDINaS OF THE GEOLOGICAL SOCIETY. 



Sigillaria dichotoma, Haught. ibid. p. 234 (but not p. 235, which 

 certainly belongs to Lepidodendron). 

 Filicites dichotoma, Hanght. iUd. 



This is distinguished from C. MltorJcense, 1st, by the smaller and 

 more approximated leaf-scars (warts); 2ndly, by the absence of 

 the fine, close, longitudinal striae ; 3rdly, by the strongly prominent 

 transverse striae ; 4thly, by the distinct central scar of the warts. 

 These differences are not to be seen only in the specimens from 

 Kiltorkan, but also in those from Bear Island (see my 'Possil 

 Mora of Bear Island,' pis. xi. & xii. figs. 11 & 12, enlarged 116 

 & 12b). 



TJie Stem (fig. 3). — This specimen has a breadth of 33 miUims. 

 The leaf-scars, 1 milhm. broad, stand close together ; for they are 

 only from 1 to 1| millim. apart. It has very distinct transverse strise, 

 which in part run over the whole width of the stem ; with these 

 there are also longitudinal strise, which, however, stand further aj)arfc 

 and are more irregular and deeper than in the former species. The 

 scars are partly circular, partly oval ; they are sharply defined, with 

 a projecting rim and a central wart. The transverse rows (as 

 represented in the bough figured by Lyell) are almost horizontal, 

 tolerably widely separated from each other, in consequence of 

 the pressure undergone by the stem, while the scars have drawn 

 near to each other, by which means they apparently receive an 

 almost whorled position, which in fact Haughton has ascribed to the 

 Cydostigmata. 



Brancli. — The branch shown in fig, 2 is 11 millims. in breadth, 

 and is divided in the upper part into two branches of almost equal 

 thickness. The scars have a breadth of 1 millim. , and, as on the 

 stem, are about 1 to Ig millim. apart. They are circular, very 

 sharply defined, with a distinct projecting rim and central wart. 

 Here also we have irregular transverse strise and also the shallow 

 longitudinal strise. Between these the bark is quite fiat, and the 

 finer strise of the former species are wanting. That this cannot be 

 a branch of Gyclostigma TciltorTcense may be seen by a comparison 

 with fig. 4 and fig. 5 c. These last are branches of G. hiltorhense, 

 which are distinguished from those of G. minutum by the charac- 

 teristics given above. We have therefore branches and stems of 

 Gyclostigma minutum (fig. 3) and branches and stems of G. Tciltor- 

 Tcense ; of these last I have figured one in fig. 5 a. There are, how- 

 ever, some twice as thick. 



3. Knoreia. acictjlabis, Gopp., var. Bailyana. 



Knorria Bailyana, Schimper, Paleont. Yeget. ii. p. 48. 



The specimen figured (fig. 6) agrees so well with Knorria acicu- 

 laris, Goppert, in the slender linear pointed warts (see Gopp. Nova 

 Act. Acad. Loop. Carol. 1852, p. 200, pi. xxx. fig. 3, and Heer, 

 [ Fossil Flora of Bear Island,' pi. x. figs. 6, 7) that I thought myself 

 justified in referriug it to that species. It diff'ers from the speci- 

 mens from Bear Island and Silesia only in the more closely ap- 



