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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXIX. 



first of which divides into 3 twigs; the second is furcate. Media 

 with few forked branches. Cidntus with 4 l)ranches. Anal area long-, 

 reaching nearly half the length of the wing. The first anal ^■ein sends 

 out several twigs })ackward. Structure leathery, with a tendency to 

 the formation of cross wrinkles. 



Holotype.—Q2X. No. 38748, U.S.N.M. 



ANOMOMYLACRIS, new genus. 



Front wing slenderl}^ cordate, nearly 2i times as long as the basal 

 width. Costal area triangular, half as long as the wing, with about 

 7 veins issuing radially from the base. Radius w ith 5 branches directed 

 toward the anterior margin, only the first and third of which are fur- 

 cate. Media continuing in a nearly straight course through the mid- 

 dle of the wing, with 2 forked branches which run off backward and 

 extend to the apical border. Between the radius and the media lies 

 an accessory vein. The cubitus is greatly developed and proceeds in 

 a nearl}^ straight horizontal line from the base to the apical margin; 

 its first (proximal) is forked, the second divides into 4 or 5 twigs, 

 the third is simple, the fourth is furcate, and the fifth is again simple. 

 The anal area is 2i times as long as high and nearly half as long as 

 the wing. The first anal vein sends 4 twigs backward; then follow 

 about 8 to 9 veins. The structure consists of a fine, close network. 



ANOMOMYLACRIS CUBITALIS, new species. 



Locality. — Lorberry Gap, in Sharp Mountain, 5 miles west of Tre- 

 mont, Pennsylvania. Anthracite series; stage % 



H- < 



Fig. 77.— ANOMOMYLACRIS CUBITALIS. 



Length of front wing, 27 mm. 

 Holotyjje.—Cai. No. 38747, U.S.N.M. 



STENOMYLACRIS, ne^Ar genus. 



Front wing very slender, 2f times as long as broad. Costal area 

 triangular, not quite reaching the middle of the w^ing, the veins aris- 

 ing from the subcosta near the base. Radius stretching in a strong 



