120 CATALOGUE OF FOSSIL PLANTS 



fine vessels connected with the leaf-scars within the outer 

 cortex, which are impressed minutely on this slab. The some- 

 what flexuose character of these vessels is much exaggerated 

 in the drawing. It is an impression in shale of nine ribs, 

 nearly five inches long and nearly one broad, with the leaf- 

 scars rather close, and about nine on the longest piece of rib, 

 but the scars are not all equally distant ; from the sides of 

 each scar curved lines run off on each side towards the margin. 

 It is merely one of the many forms in which S. reniformis 

 is preserved in the shales and carbonaceous deposits of the 

 Coal series. Hutton label on the back, " Sigillaria, Killing- 

 worth Colliery. To be returned." 

 Loc— Killingworth. (H. C. 489). 



232. —Sigillaria organum, L. et H. Type SPECIMEN, F. F., pi. 70. 



No Hutton label on this specimen, which is rather larger by 

 three ribs than Hutton's figure. Portion of bark or cortex, 

 with thirteen or more impressions of broadish ribs, on shale, 

 with small part, three ribs, of an inner-layer of the cortex 

 carbonized. The ribs indicate indistinctly along the centre a 

 row of depressed double punctures three-quarters of au inch 

 or more apart. The Figure, pi. 70, gives an erroneous idea of 

 the shape of the scars. I have no doubt of the identity of 

 this with S. organum, Stb., but it is merely a young state of 

 P. reniformis. The specimen is referred with doubt to the 

 Bensham seam. 

 Loc. — Shale above the Bensham Seam ? Jarrow. (H. C. 490). 



233. Remains of seven ribs shewing indistinct reniform im- 

 pression of scars and striated lines, the impressions of part of 

 the vascular system of the plant, identically the same species 

 as the last. 



Loc. — From the Cramlington or Killingworth district. {H. C. 

 469). 



234..— Sigillaria oculata, L et H. Type specimen, F. F., pi. 59. 



Slab of shale, nine inches long, with impression of five ribs, 

 half an inch wide, with indistinct impressions of ovate-shaped 

 scars, not oval as in the drawing, pi. 59, in the centres of 

 which are two elongated slits or depressions. The whole sur- 

 face of the ribs covered with fine longitudinal lines or furrows. 

 Two Hutton labels on this specimen, the oldest " Sigillaria 

 oculata, Killingworth, pi. 59." 

 Loc— Killingworth, near Newcastle-on-Tyne, (H. C. 439). 



