340 SAMUEL H. SCUDDER ON THE 



Lithomantis caibonaria. 



Lithomantis carbonari us Woodw., Quart. Journ. Geol. Soc. Loud., xxxn, 00-04. pi. 9, 

 fig.l. 



Carboniferous deposits of Scotland. 



Lithosialis Scudder. 



Wings only known. Mediastinal vein of front wings moderately distant from the margin, 

 gradually approaching it all the way from the base ; internomedian area unimportant, and 

 far less extensive than the externomedian. 



Lithosialis Brongniarti. 



Lithosialis Brongniarti Scudd., Mem. Bost. Soc. Nat. Hist., in, 223. 

 Carboniferous deposits of Coalbrookdale, England. See the reference above for 

 earlier synonymy. 



Lithosialis bohemica. 



Lithosialis bohemica Scudd., Proc. Bost. Soc. Nat. Hist., xxi, 167. 

 Gryllacris bohemica Novak, Jahrb. geol. Reichs., xxx, 69-74, pi. 2, figs. 1-2. 

 Coal measures of Stradonitz, Bohemia. 



Lithosialis caibonaria 



Acridites carbonarhis Germ., Mlinst., Beitr. zur Petref., v., 92-94, pi. 13, fig. 5 ; — Ib., 

 Verst. Steink. Wettin, 87, pi. 31, fig. 10. 



I place this species here from the close general re-e.nblance of the neuration to that of 

 the two preceding species. To do so, however, it is necessary to suppose an error in the 

 figures given by Germar in making the melia^tinal vein arise as a superior offshoot of the 

 scapular; but as this correction seems necessary to any understanding of its neuration, it 

 is not a violent supposition. Germar in his later work presumed it to be the hind wing 

 of his Blattina didyma, but it does not at all agree with the neuration of the hind wings 

 of any jialeozoic cockroaches. 



Carboniferous beds of Wettin, Germany. 



Brodia priscotincta. 



Brodia priscotincta Scudd., Mem. Bost. Soc. Nat, Hist, in. 215-217, pi. 17, figs. 3-7- 

 — Ib., Geol. mag., (2) vm, 293-295, 300, fig. 

 Carboniferous deposits at Tipton, England. 



Pachytylopsis DeBorre. 



There has been some dispute about the position of this genus, but I think there can be 

 no doubt that its place is here. Through the kindness of Mr. DeBorre I have been able 

 to examine not only the excellent heliotype he has published, but a cast from the fossil, by 



