CONTRIBUTIONS TO PALAEONTOLOGY. 109 



The following list of New-York species, with references to the plates and 

 figures of such as are illustrated in the Quarterly Journal of the Geological 

 Society, may prove convenient for future comparisons. 



Quarterly Journal Geological Society, Vol. xviii. 



Syringoxylon mirabile Plate xii, fig. 1-5. 



Dadoxylon hallii Plate xiii, f. 11. 



Aporoxylon. 



Sigillaria vanuxerai Plate xii, f. 7. 



S. simplicitas. 



Syringodendron gracilef Plate xiii, f. 14 a, b. 



Stigmaria exigua Plate xiii, f. 13. 



Didymophyllum reniforme Plate xiii, f 15. 



Calamites inornatus Plate xvii, f. 56. 



C. transitionis(?)*. 



Lepidodendron gaspianum Plate xiv, f. 26, 27, 28; and 



Plate xvii, f. 58. 



L. chemungense. 



L. corrugatumt Plate xii, f. 10. 



Ly copodites vanuxemi Plate xvii, f. 57. 



Psilophyton princeps (Vol.xv, p. 479, f. 1 a to 1 i). 



Cordaites robbi( ?)* Plate xiv, f. 31 a, b, c, d. 



C. angusti folia. 



Cordaites[?J Plate xvi, f. 59. 



Cyclopteris jacksoni*. 



C. halliana Plate xvii, f. 54 & 55. 



C. incerta Plate xvi, f. 44 a, 6, c. 



Rhachiopteris pinnata Plate xvi, f. 60. 



R. cyclopteroides. 



R. punctata Plate xvi, f. 61. 



R. striatal . 



R. tenuistriata Plate xiv, f 32 a, 6 ; and 



Plate xvi, f. 45 & 46. 



Acanthophyton spinosum Plate xii, f. 6 a, 6. 



* The species marked thus were credited to New-York localities in the list on page 

 298, but are omitted in the table at page 326. I have nevertheless included them in this 

 list. The Sagenaria veliheimiana, cited by Professor Dawson from Kettle point, Lake 

 Huron, will probably be recognized among the fossil plants of New-York. 



t These species are from Ohio , occurring in beds which are regarded as of the upper 

 part of the Chemung group. 



