556 PALjBONTOLOGICAL REPORT OF GEOLOGICAL STJRVEV. 



Explanation of the Plates. 



PLATE VI. 



Fig. 1. Sphenopteris tridadyl'Ues, Brongt? Our species, found at Union Com- 

 pany mines, somewhat differs from the European species, by its long- 

 er tertiary pinnules and its broader punctulate rachis; it is probably 

 a peculiar species; 1 a shows a tertiary pinnule; twice the natural size. 



Fio. 2. Neuropterisjlexuosa, Sternb. Giger's vein, Greenup county, Ky. 



Fio. 3. Pecopteris lonchitica, Brongt. Upper part of a frond. The secondary- 

 pinnae like a are mostly found. Low coal. Union Company mines, 

 &c. 



Fio. 4. JVeuropteris hirsuta, Lsqx., -with stem. The leaflets are mostly found 

 separate. Common in the whole extent of Coal Measures. Very 

 variable in its outlines. 



PLATE VII. 



Fio. I. Lepidodendron politum, spec. nova. General scars oval lanceolate 

 pointed curved at both ends with broad inflated, scarcely ribbed mar- 

 gins. Impressions rhomboidal, obtuse above, narrowed at the base, 

 marked with three obsolete points; appendages two, united to the 

 margin; no medial line nor wrinkles on the smoth scars. Union Com- 

 pany mines, Ky. 



Fio. 2. Stigmariaficoides, Sternb., with flattened leaves as it is ordinarily found 

 in the coal and the shales. Fig. 2a shows part of a round leaf as 

 preserved in the sandstone. 



Fio. 3. Lepidostrolus . Low coal. Bell's mines, Hawesville, &c. 



Fig. 4. Sigillaria obovala, Lsq'x. MSS. in Pennsylvania report. Low coal. 



Fio. 5. Cross section of a small Lepidostrolus. 



Fig. 6. Lepidophyllum crevifolium, Lsq'x. MSS. Pennsylvania report, pi. 23, 

 fig. 6. 



Fio. 7. Lepidophyllum lanceolatum, Brgt. These three last species are general- 

 ly found in the low coal. 



Fig. 8. Carpolitkes plati-marginatus, Lsq'x. MSS. in Pennsylvania report, pi. 

 1 23, fig. 12. Low coal. Union Company mines, <fcc. 



Fio. 9. Carpolithes bicuspidatus, Sternb., common in the low coal of Kentucky. 



Fie. 10. Calamitet tubtrtvlosut, Gutb. Bash coal, Kentucky. 



