S. II. SCUDDER ON PALAEOZOIC COCKROACHES. 127 



Al'PKXDIX. 



The following species cannot be definitely referred to any of the preceding genera. 



Blattina Tischbeini. PI. 4, fig. 10. 



Blattina Tischbeini Gold., Vorw. Faun. Saarbr., 1G-17; — 11)., Faun, saraep. foss., i, 



lb-17, pi. 2, fig. 1G; — lb., Faun, saraep. foss.,.ii, 19, 51. 



Fore wing. The fragment preserved is *an insignificant portion of the base, which does 

 not permit us to say more of its a (Unities than that it belongs to the Blattinariae, and not 

 to the Mylacridae ; a network of delicate veins can be seen between the principal nervures. 



Hind wing. A much larger fragment of the hind wing is preserved, consisting, however, 

 altogether, or almost altogether, of the anal field fully expanded, but much broken ami 

 crushed out of shape, according to Goldenberg; between the veins a very fine transverse 

 neuration is preserved, giving the wing a very delicate appearance. 



A fragment of one of the legs is preserved beside the hind wing; a hind leg, according 

 to Goldenberg, consisting of a part of the femur and tibiae " with traces of spines." This 

 is the only palaeozoic cockroach described in which mention is made of spinous legs. 



Besides these, upon the same stone but separated from them, is the pronotal shield, which, 

 according to Goldenberg. is transversely elliptical, somewhat gibbous, the hind margin 

 nearly straight ; elsewhere, both in front and on the sides, rounded, the surface with some 

 slight cross furrows, its length 8 mm. and its breadth 12 mm. Excepting for its hind mar- 

 gin, its form closely resembles that of Myl. anthracophilum. 



The species probably attained a length, according to Goldenberg, of 34 mm. 



Several specimens were found in a bituminous shale at Hirschbach, near SaarbrLicken, 

 Germany. Middle carboniferous. 



Blattina latinervis. PI. 4, fig. 3. 



Blattina latinervis Heer, Viertelj. naturf. Gesellsch. Zurich, ix, 288, 296-97, pi., fig. 4; — 



Gold., Faun, saraep. loss., ii, 20. 



This is the best-preserved hind wing of a fossil cockroach known, hut is still very frag- 

 mentary, nearly the whole anal field (all but a detached fragment), besides the extreme base 

 and a belt across the middle of the wing, being wanting. It is subovate, with a straight 

 or slightly concave costal margin and a rounded apex. The mediastinal vein, if the costal 

 portion of the wing is perfect and correctly represented, runs close to the margin, nearly 

 uniting with it in the middle, and then diverges slightly from it. terminating only a little 

 before the tip, and in its apical half emitting several short, oblique branches. The scapular 

 vein runs parallel to the border in the basal half of the wing, and then divides into two 

 compound branches. The externomedian vein is irregular, forking near the base, the 

 upper branch simple and running in an irregularly arcuate course to the tip of the wing, 

 the other forked doubly, with a similar but less arcuate and more regular course. The 

 internomedian vein emits, close to the base, two or three simple branches. The anal area, 

 to judge from the small detached fragment, is filled with parallel, frequent, gently arcuate 

 veins, united, like those of the other parts of the wing, with rather distant cross veins, 



