OF ARTS AND SCIENCES. 171 



pally in the Comptes Rendus of the Belgian Entomological Society 

 eight or nine years ago. De Borre at first considered it an orthopte- 

 rous insect, and named it Pachytylopsis, together with another smaller 

 form. Afterwards he separated it from the other under the above 

 name, in maintaining Breyer's belief that it was lepidopterous. To 

 this opinion he gained no adherents, and subsequently modified his 

 views by calling it a member of the ancestral stock of Lepidoptera. 

 The. true position of the fossil will hardly be doubted by those who will 

 examine the entire series here discussed. Two species are referred 

 here : — 



1. Wing scarcely more than twice as long as the greatest breadth ; 

 branches of the anal vein widely and rather abruptly divari- 

 cate B. horinensis De Borre. Mons, Belgium. 



1. Wing fully three times as long as the greatest breadth; branches 

 of anal vein approximate, gently divaricate. 



B. elongata {Diet, elongata Gold.). 

 Dudweiler (Saarbruck basin). 



GOLDENBERGIA, n. gen. 



I venture to apply the name of one of the closest students of car- 

 boniferous insects to this group, comprising, as it does, a considerable 

 number of species first made known by him, though then supposed to 

 belong mostly to the Termitina. It is the most prolific of the Euro- 

 pean genera. The following are the species : — 



1. Wings rapidly narrowing from within the middle outward, at most 

 scarcely more than three times as long as broad 2 



1 . Wings gently narrowing from about the middle outward, and more, 



generally much more, than three times as long as broad . . 3 



2. Broadest portion of wing in the middle of the basal half, the lower 



margin beyond this slightly concave, making the wing falcate ; 

 veins very gently curved . G. eJoncjata {Did. elongata Gold.). 



Dudweiler (Saarbruck basin). 



2. Broadest portion of wing scarcely behind the middle, the lower 



margin outside of this gently convex, the apical portion of the 

 wing not at all falcate ; veins more curved than in the preceding. 

 G. nigra {Diet, nigra Kliv.). Frankenholz, Bavaria. 



3. Fore wing equal throughout most of its extent ; internomedian 



vein simple G. Decheni {Termes Decheni Gold.). 



Altenwald (Saarbruck basin). 

 3. Wings oblong-ovate ; internomedian vein forked 4 



