108 PROCEEDINGS OF THE ACADEMY OF [1885. 



give the latter the appearance of extending out beyond the 

 broadest part of the wing. The anal appears to be insignificant, 

 reaching less than a third the distance from the base and resem- 

 bling a narrower and smaller internomedian area. Length of 

 fragment, 10*5 mm., probable length of wing 12 mm. , 



Received from Rev. P. B. Brodie, as coming from the Upper 

 Lias of Alderton, Gloucestershire, England. 



Pterinoblattina hospes. 



Ricania Jio&pes Germ., Acta Acad. Leop. Carol., xix, 220-21, PI. 23, 

 fig. 18. 



Germar took this for one of the Fulgorina, in the neighbor- 

 hood of Ricania and Pceciloptera. It is pretty plain, however, 

 that it belongs here, though the figure given by Germar is not 

 sufficiently clear to enable one to formulate any characteristics. 

 Assmann thought it a Neuropteron, falling in the neighborhood 

 of Drepanopteryx. 



It comes from the Oolite of Solenhofen. 



Pterinoblattina gigas. 



Ricania gigas Weyenb., Arch. Mus. Tcyl., ii, 270-71, pi. 35, fig. 23. 



Following Germar, Weyenbergh placed this enormous species 

 in llicania, but it as evidently falls here and bears a close general 

 resemblance, excepting in size, to P. penna of the Purbecks. 

 Ricania fulgens Gieb. (Brodie, PI. 4, fig. 12), from the Vale of 

 Wardour, has nothing to do with Pterinoblattina. 



This gigantic form also come from the Oolite of Solenhofen. 



II. Triassic Blattarise from Colorado. 



In a recent paper I described some of the Triassic Palreoblat- 



tarise, which I mentioned as interesting on account of their 



special relation to the Blattarise of the same formation. Brief 



diagnoses of these latter forms will therefore have some interest, 



Mini I mention them in the order of their relation to the Palaeo- 



blattariae. 



NEORTHROBLATTINA ( , co s , fy0po { ), gen. nov. 



In this genus the wings are about two and a half times longer 

 than broad, with fairly well rounded apices, the mediastinal and 

 scapular veins amalgamated into a single vein, which extends 

 nearly to the tip and in the middle of the wing occupies nearly 

 one-half its width. The internomedian vein is of varying impor- 



