478 SAMUEL H. SCUDDER OX 



Length of fragment, 8 nun.: probable length of wing, 9.75 mm.; breadth, 4 mm. The 

 specimen is of the same color as the dirty, chalky-white stone on which it is preserved 

 and exhibits apparently the under surface, the veins being slightly raised; the principal 

 veins are scarcely separable near the base. The species, sen! me by Mr. Brodie, comes 

 from the English Purbecks and is named for the English naturalist,' Mr. A. R. Wal- 

 lace, whose studies have embraced fossil insects. 



i 



ScUTIXOBLATTIXA Scudder. 



ScutinoMattina Scudd., Proc. Acad. Nat. Sc. Philad., 1885, 110. 



The tegmina are more or less coriaceous obscuring somewhat the neuration. The 

 mediastino-scapular vein is nearly or quite straight, terminating a little below the tip of 

 the wing, while the median vein (the externomedian and internomedian being united) 

 runs parallel to and somewhat distant from it. The anal veins fall sometimes on the in- 

 ner margin and sometimes on the anal furrow. All the species are from the American 

 Trias. 



The three species are S.Brongniarti, S. intermedia and S. recta, all found at Fairplay, 

 Colorado. They have been briefly described in the Philadelphia Academy's Proceed- 

 ings, and will be fully discussed and figured in a paper devoted to this Triassic locality, 

 so that it is only necessary here to indicate their position in the series. 



LEGNOPHORA Ileer. 



Legnophora Heer, Viertelj. naturf. Gesellsch. Zurich, ix, 297. 



Heer gives this name to an object of whose animal nature he was not wholly convinced. 

 If, as he supposed, the front wing of a cockroach, it differs from all known forms in the 

 parallel and longitudinal course of the veins of the costal area. Apparently it falls near 

 this place, and the wing itself appears to have been somewhat coriaceous. 



The single species is L. Girardi Ileer (Joe. cit.) fig. 5, from the Trias of Trebitz, 

 Germany. 



APOKOBLATTINA gen. now (aizapos). 



Under this name, I group a series of wings, of three of which I have seen specimens, 

 which appear to me to be in all probability hind wings of cockroaches. They differ con- 

 siderably among themselves, but agree in having the mediastinal and scapular veins dis- 

 tinct, the former occupying a narrow belt with longitudinally oblique veins, and in having 

 a very extensive development of the internomedian vein, with long, sweeping, arcuate, 

 nervules; the externomedian, in all cases but one or two, where it appeal's to be either 

 altogether wanting or amalgamated with the internomedian, being very slenderly devel- 

 oped in a very narrow area. 



Most of the species come from the upper Odlite of England, but three species come 

 from the Lias, two of them from England and one from Germany. 



