1054 DR R. KIDSTON, MR T. C. CANTRILL, AND MR E. E. L. DIXON. 



slightly above the middle of the leaf scar, the central punctiform, the two lateral 

 oval, straight or very slightly diverging. The ligule pit rests on the upper margin 

 of the leaf scar within the sinus. 



Remarks. — The only specimen discovered is that shown on PL III, fig. 1, where 

 it is given natural size, and a small portion is enlarged two times at fig. la. The 

 ribs are 1*3 mm*, broad, and their surface is entirely without ornamentation. A few 

 longitudinal crack-like lines are seen at some places on their surface, but they seem to 

 be accidental. 



The leaf scars only occupy about ^ of the width of the rib and are 5 mm. wide 

 and 3 '5 mm. high, and stand about 3 '25 cm. distant from each other. 



The form of the leaf scars is somewhat similar to those of Sigillaria reniformis 

 Brongt.,* but they are more transversely oval and not sub-hexagonal as in that 

 species. Sigillaria Pringlei further differs in the absence of the transverse furrow 

 above the leaf scars and in the greater distance of the scars apart, as well as in the 

 absence of the division of the rib into three longitudinal areas by the long decurrent 

 lateral lines which descend from the leaf scars of Sigillaria reniformis. 



Locality. — Kinlet Colliery, 1 mile S.W. of Highley, Shropshire. 



Horizon. — Shales associated with Brooch Seam. Westphalian Series. Collected 

 by Mr J. Pringle (Pr. 1529). 



Sigillaria transversalis Brongt. 

 PL II, figs. 2-4. 



1836. Sigillaria transversalis, Brongt., Hist. d. veget. foss., i, p. 450, pi. clix, fig. 3. 



1857. ,, „ Goldenberg, Flora Sarmp. foss., Heft ii, p. 37, pi. x, fig. 17. 



1886. „ „ Zeiller, Flore foss. bassin houil. d. Valen., p. 531, pi. lxxxviii, fig. 1, 



(text 1888). 

 1904. „ ,, Koehne, " Sigillarienstamme," Abhandl. d. k. preuss. Geol. Landesanstalt, 



p. 56 (text-fig. 9 ?). 

 1904. ,, „ Zalessky, Mem. du Comite geol., nouv. ser., livr. xiii, p. Ill, pi. x, fig. 1 ; 



pi. xiii, fig. 6. 

 1914. „ „ Arber, Phil. Trans., ser. B, vol. cciv, p. 398, pi. xxviii, fig. 19. 



1876. Sigillaria transversalis var. sparsifolia, Boulay, Terr, houil. d. Nord de la France, p. 47, pi. iv, 



fig. 4. 

 1894. Sigillaria typus Rhytidolepis, Potonie\ Jahrb. d. k. preuss. geol. Landesanstalt, p. 26, pi. iii, fig. 1. 



Description. — Stem ribbed, furrows straight or slightly undulating. Leaf scars 

 distant, occupying from about | to the whole width of rib, transversely lenticular 

 or oval, usually broader than high, upper margin rounded with a prominent notch, 

 lower margin rounded ; lateral angles prominent, placed about the centre of the sides, 

 and from which descend two diverging lines that soon terminate in the furrow. 

 Cicatricules three, placed slightly above the centre of the leaf scar, the central 



* Brongniart, Hist. d. vegil. foss., p. 470, pi. cxlii ; Zeiller, Flore foss. bassin houil. d. Valen, p. 556, pi. lixxiv, 

 figs. 4-6. 



