312 Handlirsch — Nexo Paleozoic Insects from the 



into a few branches only. Medial vein cleft somewhat after 

 the origin of the sector into 2 main branches, which probably 

 were forked again in the apical half of the wing. The media 

 is followed by a long vein, slightly curved down toward the 

 posterior margin and forked somewhat before the middle of 

 the wing. This vein may be either the whole cubitus or the 

 anterior branch of it and is attached to the media by an oblique 

 bridge which we must suppose to be a proximal branch of the 

 media, uniting for but a short space with the cubitus. This 

 interpretation being correct, it would tend to reclaim the fol- 

 lowing richl}' ramified vein for the cubitus, for it is not to be 

 assumed that the cubitus could be reduced to a simple vein. 

 In the other case it would be possible to designate the above 

 mentioned richly ramified vein as the first anal vein. As un- 

 doubted anal veins we must acknowledge the 3 oblique veins 

 provided with terminal forks, which close the venation at the 

 posterior angle of the wing. I see no cross veins but many 

 small folds, which induces me to suppose that this wing was a 

 delicate and membranous one. 



Holotype in Feabody Museum, Yale University, Cat. No. 32. 



Family GERAEID M Handlirsch. 



The Yale collection contains several new forms evidently 

 belonging to this family. The examination of these leads me 

 to make some corrections in my first description. 



The protborax is not, as I supposed, short and stout, but on 

 the contrary forms a long neck, which I previously had held 

 for a part of the head. The new material shows that this fam- 

 ily has no close relationship to the CEdischiidse, approaching 

 rather to the Spanioderidse, from which it principally differs 

 by the much more expanded radial sector and the much more 

 reduced cubitus. The subcosta shortened, but discharging into 

 the costa, not into the radius. Costa marginal. 



Gerarus Scudder. 



Prothorax with a broad base, either provided with tubercles 

 or smooth, but in every case produced into a long, neck-like 

 part bearing the head. 



Gerarus lalus, new species. Fig. 17. 



Anterior wing elliptical, nearly three times longer than 

 broad, measuring 44 mm . Subcosta not conspicuously shortened, 

 with numerous oblique cross veins, and equally far removed 

 from the costa and from the radius, the latter nearly reaching 

 the apex of the wing. Sector rising very near the base, moving 



