442 PALAEONTOLOGY OP ILLINOIS. 



squarely cut at the base, and without auricles ; pedicel of the 

 sporange narrow, lanceolate pointed, one-fourth of an inch 

 long. In its length it corresponds exactly to the distance be- 

 tween the border of the axis and that of the line of circumfer- 

 ence of the cone. The sporanges are obscurely marked on the 

 stone, mixed with pyrites, but I could not detect any spores. 



LEPIDOSTROBUS LANCIFOLIUS, Sp. nov. 



PI. xxxi, fig. 7. 



A SMALL, apparently narrow cone. The pedicel of the spo- 

 ranges, fig. 7 by is very short, broadly wedge-shaped, obtusely 

 truncate at its base ; blade one inch long, slightly enlarged in 

 the middle, tapering into an acute point, with slightly diverg- 

 ing acute auricle at the base ; medial nerve sharply marked. 



On a concretion from Mazon creek. 



LEPIDOSTROBUS TRUNCATUS, Sp. nov. 



PL xxxi, fig. 5. 



CONE less than one inch long, round ovate, obtuse, truncate 

 at the base, with densely imbricated, short, lanceolate splio- 

 rophyllce (blades) . None of these can be distinctly seen, being 

 compressed against the cone. 



In a concretion from Mazon creek. 



LEPIDOSTROBUS CONNIVENS, Sp. nov. 



PL xxxi, fig. 6. 



CONE small, ovate obtuse, of the same size as the former, 

 with long, narrow, linear lanceolate spwopliyllce ; blade as 

 long as the cone, curved at its top and covering it. 



