690 



rilOCEEDlNiifS OF THE NATIOXAL MUSEUM. 



VOL. XXIX. 



PARALOGUS Scudder. 



PARALOGUS iESCHNOIDES Scudder. 



Parulogus wsditiuides ycuDUEu, Bull. I'. S. (ieul. Siirv., No. 101, 18!»3, p. 21, 



pi. I, tigs, a, 1>. 

 Pdralogtis icsdmoides Bkongniakt, Faune ent. terr. prim., IHitl-;, p. 521, tig. 



Locality. — Silver Spring, East Providence, Kiiode Island. Penn- 

 S3dvanian; ten-mile series; AUeglieny or Coneniaugh stage. 



A well-preserved wing of 60 mm. length. 



PAL^^OTHERATES, new genus. 



PAL/EOTHERATES PENNSYLVANICUS, new species. 



Locality. — Campbells Ledge, near Pittston, Penns3dvania. Near 

 top of Pottsville; upper transition gpoup. 



A fragment of a wing, \X) mm. long. Probable length of wing, 

 loo mm. One can distinguish numerous longitudinal veins, partly 

 simple, partly compound in the form of accessory sectors, which are 

 united b}' straight cross veins, as in the odonates, so that rectangular 

 or polygonal cells result. In my opinion, the first conspicuous mar- 

 ginal vein in the specimen may correspond to the costa, and indeed to 

 that part wli'ch li \s outside the point of union with the subcosta. 



I 



e^i&. 



\ G^. 



Fig. 17.— PAL,«0THERATES I'ENNSYLVANIC:V^ 



The second vein visible ma}^ then be the radius, and the 2 following 

 branched veins should belong to the radial sector, the 3 succeeding 

 this to the media, and the next to the cul)itus. The accuracy of this 

 assumed interpretation rests upon a portion only of the terminal half 

 of a very large wing. On the other hand, should the second conspicu- 

 ous vein be declared the subcosta, the interpret.ition would then be a 

 much more difficult one and the resemblance to the other prodonates 

 much lessened. 



Holotyjx'.—Q^t. No. 88787, U.S.N.M. 



