164 DR ROBERT KIDSTON ON THE 



Rhabdocarpus inflatus Lesqx. 



1884. Rhabdocarpus inflatus, Lesqx., Coal Flora, vol. iii. p. 815, pi. ex. fig. 36. 

 1890. Carpolithus inflatus, Kidston, Trans. York. Nat. Union, part xiv. p. 63. 



Remarks.— The longitudinal striations are very fine and regular, and in some cases 

 are scarcely visible. They appear to be more distinct when the epidermal layer is 

 removed from the specimen, and are possibly fine strands of sclerotic tissue. Though 

 I was originally inclined to include these fossils in Carpoliihes, the presence of the 

 longitudinal bands must exclude them from that genus, as far as at present I 

 understand it. 



On account of our imperfect knowledge of the seeds that occur as incrustations, any 

 proposed classification can only be regarded as provisional, though it is necessary to 

 distinguish the various groups by different provisional generic names, if for no other 

 reason than to enable one to record and to refer to them. 



Horizons and Localities. — 



Roof of Brooch Coal : Tividale. 



Roof of Thick Coal : Bradley Colliery, Bilston. 



Rhabdocarpus Wildi Kidston, sp. 



1892. Carpolithes Wildi, Kidston, Trans. Manchester Geol. Soc, part xiii. p. 408 (text-fig.). 



Remarks. — As this species has also the longitudinal parallel bands of Rhabdocajpus, 

 I have removed it from Carpolithes, in which genus I originally placed it. 



Horizon and Locality. — Ten-foot Ironstone Measures: Clayscroft Openwork, 

 Coseley, near Dudley. 



Trigonocarpus Brongniart. 



Trigonocarpus Noeggerathi Sternb., sp. 



1826. Palmacites Noeggerathi, Sternb., Essai flore monde prim., vol. i. fasc. iv. p. xxxv and p. 49, pi. lv. 



figs. 6, 7. 

 1828. Trigonocarpum Noeggerathi, Brongt., Prodrome, p. 137. 



1886. Trigonocarpus Noeggerathi, Zeiller, Flore foss. bassin houil. d. Valen., p. 649, pi xciv. figs. 8-11. 



{Excl. ref. L. & H.) 



1888. ,, ,, Kidston, Trans. Roy. Soc. Edin., vol. xxxiii. p. 403, pi. xxiii. 



fig. 3. 



1889. „ ,, Kidston, ibid., vol. xxxv. p. 414, pi. ii. fig. 4. 



1826. Palmacites dubius, Sternb., Essai flore monde prim., vol. i. fasc. iv. p. xxxv and p. 50, pi. lviii. 

 figs. 3a, b, c, d. 



Remarks. — This seed is apparently rare in the coal field. 



Horizon and Locality. — Ten-foot Ironstone Measures: Clayscroft Openwork, 

 Coseley, near Dudley. 



