S. H. SCUDDER ON PALAEOZOIC COCKROACHES. 59 



forked. The internomedian is scarcely arcuate, so that the area it covers narrows princi- 

 pally by the curvature of the margin ; the vein emits four or five simply or doubly forked 

 branches. The anal furrow is strongly arcuate on the basal, straight on the apical half, and 

 terminates at the middle of the inner margin ; the anal veins, eight or nine in number, are 

 simple, parallel, and gently arcuate. 



The single specimen of the wing known is blackish brown, perfect, excepting the 

 extreme tip, the costal border distinctly marginate ; the veins are distinctly pronounced, 

 and the interspaces filled with delicate transverse veins, running from the veins and not 

 meeting those of the opposite vein directly, but forming by their mode of union pentag- 

 onal, sometimes tetragonal, cells, which can be seen by the naked eye ; those toward the 

 apex of the wing being larger than the others. Length 39 mm., breadth 16 mm., or the 

 breadth to the length as 1 : 2.4. 



Goldenberg compared this species, which is of large size and one of the largest of the 

 genus, with Etobl. carbonaria, but like the following species it is distinguished from othr-i 

 Blattinariae by the unusual breadth of the wing as compared with the length ; and in this 

 respect this species is the more remarkable, being only twice as long as broad ; it is also 

 readily distinguished from the following by the rapid narrowing of the mediastinal area, 

 and by the brevity also of the same area. 



Several specimens have been found in the Auerswald coal-seam in Gersweiler near 

 Saarbriicken, Germany. Upper carboniferous. 



Etoblattina labachensis. Fl. 3, fig. 5. 



Blattina anaglyptica var. labachensis Gold., Vorw. Fauna Saarb., 16 ; — lb., Faun, saraep. 



foss., i, 16, taf. 2, fig. 15 ; — lb., Faun, saraep. foss., ii, 19. 

 Blattina labachensis Gold., Faun, saraep. foss., ii, 51. 



The front wing has a regular obovate form, a very little more than twice as long as 

 broad, the sides nearly parallel. Beyond the base, the costal border is broadly convex, the 

 inner border very nearly straight, the ajjex very regularly and broadly rounded. The 

 veins originate near the middle of the wing and have scarcely any basal curve. The 

 mediastinal vein is very long and scarcely sinuate, terminating beyond the middle of the 

 apical half of the costal border, which is unusual in this genus ; it emits a large number of 

 generally simple or forked oblique branches, and is itself so far from the border as to make 

 the area very broad, about one-third the breadth of the wing in the middle. The limit 

 between the scapular and externomedian areas cannot be certainly determined, either from 

 Goldenberg's illustration or description ; but is probably, almost certainly, as marked in 

 our plate, where the latter is exceedingly narrow, as in the preceding species, occupying 

 the extreme tip ; both the principal stems are longitudinal and straight, and both probably 

 fork near the middle of the wing, to judge from the incomplete course of those given in 

 Goldenberg's illustration, and the branches sometimes fork singly, all the forks having a 

 longitudinal direction, parallel and close to each other. The internomedian bends a little 

 from the longitudinal course of the other veins toward the inner border, while passing over 

 the anal area, but beyond that is nearly longitudinal, scarcely arcuate, terminating only a 

 little below the tip of the wing, making the internomedian area, like the mediastinal, of 

 imusnal length for a species of this genus, by which it seems to have some affinity to Gera- 



