PLATE XLIY. 

 Sphenoptebis illinoisenis D. W. 



(Page 158.) 



Fig. 1. Ajiex of cumijound piuua. U. S. Nat. Mus.. 5661. 

 In. Detail of i)iunulo showing simple dentition. X2. 



Neuropteeis dilatata (L. aud H.) Lx. 



(Page 137.) 



Fli;. 'J. Portion of a pinnule of more elongated form. The margin is .seen on the left only. U. S. Nat. 

 Mas., 5058. 



Pecopteius aeboeescens BroDgu.'? 



(Page 78.) 



Fig. 3. Fragment, natural size, Lacoe collection. U. S. Nat. Mns., 4873. 

 3". Enlarged detail of pinnules of the same. xi. 



Algoid axis? 



Fig. 4. The figure shows the finely punctate surface of the impression on which no clear tiaees of 

 vascular bundles are seen. U. S. Nat. Mus., 5726. 



