62 S. II. SCUDDER ON PALAEOZOIC COCKROACHES. 



Etoblattina affinis. PI. 2, fig. 2. 



Blattina affiinis Gold., Neues Jahrb. f. mineral., 18G9, 159, taf. 3, fig. 3; — lb., Faun, 

 saraep. foss., ii, 19. 



The front wing is long and slender, straight and a little tapering beyond the base ; both 

 costal and inner margin are nearly straight almost to the tip, which is well rounded. The 

 veins originate a little above the middle of the wing, and curve a little upward in passing 

 from the base. The mediastinal vein is arcuate, subparallel to the costal margin and rather 

 close to it ; the area occupies one-fourth the breadth of the wing, and terminates at some 

 distance beyond the middle of the wing, emitting a large number of oblicpie, generally 

 simple, approximate branches. The scapular vein is also arcuate but much more gently, 

 rather distant from the mediastinal before branching, and terminates just before the ex- 

 treme tip of the wing ; it commences to divide near the middle of the wing, and emits 

 about five long, straight, simple or simply forked branches, closely approximate, and pre- 

 serving very nearly the direction of those of the mediastinal area. The externomedian 

 vein has a course very similar to that of the preceding vein, commencing to divide at 

 nearly the same point, and emitting three or more compound or irregularly forking, closely 

 approximate, longitudinal veins, occupying at their extremity a narrow area at the apex 

 and the extremity of the inner margin of the wing. The internomedian vein is gently 

 arcuate, having a nearly straight course from scarcely above the middle of the base of the 

 wing nearly to the end of the inner margin, emitting a large number of slightly sinuate, 

 subparallel, simple or simply forked branches, oblique toward the base of the wing, and 

 gradually more longitudinal toward the apex. Anal area unknown. 



The single specimen known is perfectly preserved, with the exception of the minor veins 

 near the base of the wings and the anal furrow ; it is a small species, being only 17 mm. 

 long, and 5 mm. broad, and the breadth to the length as 1 : 3.4. 



This species is one of the slenderest of the smaller species of Etoblattina, and is peculiar 

 for the straightness and gently tapering form of the front wing ; in its form it most resem- 

 bles Etobl. leptophlebica, from which it differs a good deal in neuration, and especially in 

 the lesser breadth of the scapular area and the less crowded disposition of the veins. 

 Goldenberg considered it as coming between this species and Etobl. anaglyptica, but its 

 much closer affinity to Etobl. flabellata must be conceded; from this species it differs par- 

 ticularly in its straight costal edge and its longer mediastinal area ; it is also a slenderer 

 species. From the species which precedes it it is sufficiently separated by its very much 

 smaller size, as also by the straight costal margin. 



One specimen. Lobejiin, Germany. Upper carboniferous. 



Etoblattina flabellata. PI. 2, fig. 4. 



Blattina flabellata Germ., Miinst. Beitr. z. Petref., v, 92, tab. 13, fig. 4 a , 4"; — Gieb., 

 Deutschl. Petref., 637;— Heer, Viertelj. Naturf. Gesellsch. Zurich, ix, 287; — Gold., 

 Faun, saraep. foss., ii, 19. (Not Bl. flabellata Germ., Verst. Steink. Wettin.) 



Blattina anthracophila E. Gem., Neues Jahrb. f. Mineral., 1873, 694, taf. 3, fig. 2 ; — 

 lb., Verst. unt. Dyas Weiss., 4, taf., fig. 2. (Not Bl. anthracophila Germ.) 



Compare also synonymy under Gerabl. Miinsteri. 



