GNETOPSIS, SCHUTZIA, DICTYOTHALAMUS, CALATHIOPS. 125 



in form l . But some of these remains also show the most decided resem- 

 blance to the leaves figured by Saporta and classed with Dolerophyllum 

 and especially the point of transverse fracture of the stem is -often to be seen 

 in the angle of insertion. In fact this resemblance is much greater .than in 

 the case of Noggerathia Cyclopteroides, Gopp., of which only one leaf is 

 known in a rather fragmentary condition. Any one may satisfy himself on 

 this point by comparing Saporta's figures cited above with the following : 

 Cyclopteris obliqua, Brongn. 2 , C. reniformis, Brongn. 3 , C. obliqua, Brongn. 4 , 

 C. dilatata, Lindley and Hutt. 5 , C. obliqua, Brongn. 6 , C. rarinervia, Gopp. 7 All 

 these remains from the Coal-measures, which have hitherto been regarded 

 as extremely doubtful objects, would have their position secured to a wel- 

 come extent, if further investigation were to establish Saporta's conception 

 of Dolerophyllae. Renault indeed has told me in conversation that he 

 would place a part only of these Cyclopteridae with Dolerophyllum, and 

 leave the others with the Ferns. He lays great weight with respect to this 

 question on the presence of the gum-receptacles in Dolerophyllum (see 

 above on p. 123). which he thinks he has recognised in certain impressions 

 of Cyclopteris in the form of small longitudinal unevennesses like pencil- 

 strokes between the nerves of the leaf-surface. To me it seems that Renault 

 sees more in the sculpture of the impression than can be admitted without 

 further proof. Again, a portion of a branch with large roundish leaf-scars 

 is figured in the work of Saporta and Marion 8 , so often quoted above, and 

 the explanation of the figure says of it : ' supposed stem of Dolerophylleae.' 

 Why it should belong to that group is not apparent, especially since the 

 shape of its scars is difficult to reconcile with the bases of the leaves in 

 question. The same remark applies to the fragments of male and female 

 flowers referred by these authors to Dolerophyllae. Impressions of single 

 scutiform scales with excentric stalks 9 have been found in the Upper Coal- 

 measures of Mt. Pele near pinac, showing on their under side numerous 

 small elliptical depressions disposed in radiating rows and filled with a 

 powdery substance which was seen to be pollen-grains ; they were therefore 

 compared with stamens of Cycadeae. Their structure was ascertained by 

 the discovery of a silicified fragment, in which the pollen-sacs in the form 

 of elongated cylindrical tubes with their contents well preserved were found 

 sunk in the tissue of the scale. The pollen-grains according to the drawing 

 given of them are ovoid and furnished on one side with two furrows close to 

 one another, and their interior is entirely filled with a cellular body com- 

 posed of large irregularly disposed elements. The original specimens, which 



1 Lesquereux (1), t. 15, f. 3. 2 Brongniart (1), vol. i, t. 61, f. 3. 3 Brongniart (1), vol. i, 



t. 61, f. i. * Lindley and Hutton (1), vol. ii, t. 90. 5 Lindley and Hutton (1), vol. ii, t. 91 b. 

 6 Gbppert (1), tt. 4 and 5, f. i. 7 Goppert (3), t. 8, f. 9. 8 Sapoita et Marion (2), p. 69. 



9 Saporta et Marion (2), p. 75. 



