Neur. 



460 



fj cite Measures, Gate and Sa- 

 lem veins," and that he had 

 received one Cyclopteroid 

 specimen of it from Can- 

 nelton. In this, and other 

 instances, it must be under- 

 stood that the Gate and 

 Salem veins are not in the 

 lssz>- V- >v --<^_>^ ^^ - ^/'Z. >/. same horizon and not upper 

 anthracite beds, any more than the Kittanning group at Oan- 

 nelton, W. Pa. I have marked all these instances as Xllh 

 Allegheny river series.- Coal Flora, plate 5, figs. 1, 2, as un- 

 dans^ were found in Gate vein, at Middleport, Schuylkill Oo.^ 

 Penna. — {See "figure of N. undans on p. 456.) 



Neuropteris heterophylla. See N. angustifolia. XIII. 



Neuropteris hirsuta. (Compare Neuropteris angusti- 



'XIII Ik. Vi ^ folia.) 



''' ' 'Lesq.Geol. 

 Pa. 1858, 

 p. 857, pi. 



4, figs. 1 to 

 16. {Neu' 

 ropier is 



cor data ^ 

 Brgt., and 



J66^.~~ - — ^ ^:;^^ m0j>j^ 4, Lij^^j; ^nd 



Hutt. ; N. angustifolia^ Brgt.; N. scheuchzeri.) lioffm.; N, 

 acutifolia^ Brgt.) First notice of the short hairs covering the 

 leaf was by Bunbury, in Nova Scotia field. Hardly a good 

 specimen fails to show them under a lens; but brittle, they 

 easily fell off, leaving sometimes only a few on part of a leaf; 

 sometimes the whole leaf is covered with them. The common- 

 est plant of all in the Pennsylvania coal fields, lower and uppei 

 coal beds alike. The short petioles remain exactly like sharp 

 thorns on the little branch (rachis) when the leaflets have 

 fallen off from it; the point of attachment was so fine and 

 tender, that Lesquereux had only seen the leaflet remaining on 

 its petiole once or twice among many thousand specimens. 



