96 TAPERS BY DK. B. CLEMENS. 



tion, and hence I give a full generic diagnosis of the American 

 species. 



The anterior wings are narrow and pointed, and the 

 posterior very narrow, almost setiform. The discoidal cell 

 of the anterior is acute behind, with three subcosto-marginal 

 nervules, the last of which arises at the apex of the cell, 

 together with the apical nervule, which sends off, at about 

 its middle, a nervulet to the inner margin, and is furcate near 

 the tip of the wing. The median nervure sends only a single 

 branch to the inner margin. Both the costal and submedian 

 nervures are short. The posterior wings without discoidal 

 cell ; the costal nervure is very short ; the subcostal runs 

 through the middle of the wing, and sends a branch to the 

 inner margin,* rather beyond the middle, and is furcate at 

 its extremity, the lower branch 

 proceeding to the tip, along 

 the inner margin. Above the 

 subcostal nervure is a rather 

 indistinct parallel fold. The 

 median nervure is long, well marked, and simple; placed 

 near the inner margin of the wing. 



Head rough above, and in front, between the antennas, 

 almost tufted ; face smooth, moderately broad and rounded. 

 Ocelli none. Eyes moderately prominent, round, and 

 partially covered with hairs from above. Antennas as long 

 as the anterior wings, filiform, simple ; basal joint squamose. 

 No maxillary palpi. Labial palpi very short, pointed, and 

 rather porrected, with two joints only distinguishable. 

 Tongue naked and short. 



B. Staintoniella.^ Labial palpi and head ochreous, the 

 latter somewhat reddish-ochreous above. Antennas ochreous. 



* This " branch to the inner margin, rather beyond the middle," I do not 

 see in my denuded specimen of a British JB. somnulentella, Zell., and this is 

 probably the slight difference in the neuration of the posterior wings to which 

 Dr. Clemens alludes. H. T. S. 



t I received three specimens of this from Dr. Clemens ; it is certainly our 

 B. somnulentella^ Zell., only a little smaller. In October, 1869, 1 also received 



