NO. 1441. 



AMERICAN PALEOZOIC INSECTS— HANDLIRSCH. 



777 



BRACHYMYLACRIS ROTUNDATA, new species. 



Locality. — Sharp Mountain (lap, 2 miles .south of Tremont, Peun- 

 sjdvania. Anthracite series; stage '. 



Length of the front wing, 1-1 mm. Radius with T l)ranches, the first 

 of which forms 3 twigs, while the second and third are furcate, and 

 the following ones simple. Each main branch of the media forms ?> 



Fig. 85.— BRACHYMYLACRIS ROTUNDATA. 



twigs. Cuhitus with about 8 offshoots, some of which are divided. 

 The apical border of the wing is remarkably broadly rounded; the 

 costal area contains about 12 veins, which are united into about 4 

 groups. 



Ilolotype.—Cai. No. 38727, U.S.N.M. 



BRACHYMYLACRIS MIXTA, new species. 



Locality. — Sharp Mountain Gap, 2 miles south of Tremont, Penn- 

 sylvania. Anthracite series; stage i 



Length of the front wing, 14 mm. Radius with 4 branches, the first 

 of which forms 4 twigs and the second 3 offshoots. The superior 



Fig. 80. — Brachymy'lacris mixta. 



branch of the media with 3 veinlets, the inferior with 4. Cubitus with 

 one simple and 3 furcate branches. Apical border broadly rounded. 

 Holotype.—OdA.. No. 38736, U.S.N.M. 



