26 NEUROPTERA. 



5. B. SEMicoLORATA, Cui'tis, Phil. Mag. 121, 9; Stephens, 



64, 7 ; Pictet, Ephem. 178, 7, tab. 22, f. 4—9. 

 Imago. Shining yellowish-brown ; the tips of the ab- 

 dominal segments with a brown stripe; caudal fila- 

 ments pale, the joints rather darker; anal forceps pale; 

 penis divided, cylindrical, the apex cup-shaped; legs 

 brownish-yellow ; the tip of the femora and the tarsi 

 darker, the femora of the anterior legs internally 

 darker ; wings hyaline, the basal half yellowish, the 

 apex of the marginal field with straight transverse 

 veins. 

 The female similar to the male, but the wings destitute 

 of yellow ; egg-valve rounded ; the last ventral seg- 

 ment oval, with the apex excised. 

 Length of the body $ 3J — 4, $ 3| lines; expansion of 

 the wings $ 9i— lOJ, 2 10 lines ; setse $ 10^, $ 5J 

 lines. 

 Sub-imago pale yellowish-grey ; wings very pale yel- 

 lowish. 

 Habitat near London. 

 The description is made from English specimens, but 

 they have not been compared with the types. The larger 

 males have the base of the wings less yellow, but otherwise 

 appear identical. 



6. B. MONTANA, Pictet ? Ephem. 172, 4, tab. 20, f. 3. 



Imago. Head and thorax shining pale-brown; ab- 

 domen yellow ; tips of the segments with brown 

 stripes, which laterally expand into triangles ; the last 

 joint unicolorous yellow; caudal filaments pale brown, 

 the joints scarcely darker, the base dark brown ; anal 

 forceps brown; the cleft penis, of which, however, the 



