N.). lui. A.UHnrCjy PALEOZOrC I.XSl'JCTS—I/AXDLIRScrL 681 



EUBLEPTUS DANIELSI, new species. 



Liical'itiJ. — Mazoii Creek, near Morris, Illinois. PennsyK :uii:ui: 

 IvittiUiMin^" '. (Alleg'heiiy) stiii»e. 



Length of the wings 13 to 11 mm. Tliis fossil pertains to th(^ smallest 

 insect that has yet been found in the Carboniferous. 



Daniels collection. Reverse of holotype in the V . S. National 

 :Museum: Cat. No. 35576. 



Family METKOPATOIUD.K, new family. 



I regard a small pala^odictyopteran wing from the lower part of the 

 Upper Carboniferous as the type of this family; this is one of the 

 oldest insects yet discovered. 



The shape of the wing is subelliptical, with broadly rounded tip. 

 The costal area is not preserved, but judging from the form of the 

 wing may have been rather wide. The subcosta reaches nearly to the 

 tip of the wing. Radius simple. Radial sector arising near the base 

 and dividing into veinlets. Media with a long, forked superior 

 branch and a 3-parted lower branch. Cubitus consisting of slightly 

 arcuate offshoots extending to the posterior border. Judging from 

 the shape of the wing, the anal portion (not preserved) certaudy was 

 not ample. Intercalary venation indistinct, consisting of a few ii icg 

 ular cross veins interspersed with delicate little folds. 



METROPATOR, new genus. 



Wing delicately mend)ranous. Radial sector divided into 3 forks, 

 wdiich are all directed to the a})ical border. The upper branch of the 

 media forms a short fork and extends obliquely to the end of the 

 inner l)order. All the following veins stretch ol)liciuely to the poste- 

 rior margin, and 1 am not quite certain whether my interpretation of 

 these is correct, l)ecause the basal portion of the wing, m wdiich their 

 point of union lies, is wanting. Below the superior branch of the 

 media follows a 3-branched fork, in which the inferior medial branch 

 may be sought; then follows a vein with a very short terminal fork, 

 then a simple one, and lasth" a 3-branched vein. These proba))Iy all 

 belong to the cubitus, but possibly the last pertains to the anal group. 



