10 AMERICAN LEPIDOPTERA. 



6. B. distinctella n. sp. (Plate I, fig. 6.)— Head grayish-white, 

 with some lustre, antennae slender, grayish-fuscous, indistinctly annu- 

 late with paler, basal joint grayish white. Labial palpi long, slender, 

 the third joint three-fourths the length of the second, whitish, rather 

 densely dusted with fuscous scales without, less so within, extreme 

 apex of second joint and basal portion of third whitish. Thorax 

 grayish-fuscous. Forewings elongate, pointed, ground color white, 

 outer three-fifths rather densely dusted with fuscous, especially so ad- 

 joining the whitish basal portion, the latter speckled with fuscous 

 towards the base, thus leaving a nearly white fascia at two-fifths, ap- 

 proximately straight, somewhat irregular without and ill-defined within ; 

 a rather large, ill-defined spot at the middle at one-half the wing 

 length, and two crescent shaped coalescent spots at end of cell, the 

 upper one reaches a trifle further outwardly, their concavity towards 

 the base ; beyond these is a rather large, irregular spot. Cilia gray- 

 ish with some scattered brownish scales. Hindwings 1, gray, dusted 

 with fuscous, especially towards the apex, cilia 1, gray with pale 

 basal line. Abdomen fuscous, segments fringed posteriorly with pale 

 scales. Legs grayish-fuscous, tibia at apex, an ill-defined spot at 

 middle externally, and apices of tarsal joints paler. Expanse 17.0 

 mm., 0.68 inch. 



A female specimen without locality label in the Nat. Mus. 

 Coll., numbered 21,469. It bears some remote resemblance 

 to the European B. phy ridel la, but the insect is lighter in 

 color, more strongly marked, wings, especially the hind 

 wings, wider and less pointed. 



7. B. villella Busck. — " Labial palpi light yellowish-brown, black- 

 ish on the outside, Face, head, thorax and anterior wings unicolorous 

 light yellowish brown, the same shade as in pergandella (Triclouella) , 

 without markings of any kind. Posterior wings shining yellowish fus- 

 cous, cilia golden brown. Legs yellowish brown, tarsi on the outside 

 blackish. Alar expanse 15 mm." 



The type, a female specimen in the National Mus. Coll., 

 was bred by Mr. Pergande from Xalisma {Andromeda) ligus- 

 trina, collected at Cabin John, Md. Mr. Busck referred this 

 species to his genus Triclonella. In a personal conversation, 

 however, he informs me that it belongs to Blastobasis. The 

 venation of the hindwings is that of the genus under con- 

 sideration, but as to the forewings I could not satisfy myself. 

 It certainly is an aberrant form. 



