160 Journal New York Entomological Society. [Voi.xviii. 



Thyatirid^. 

 19. Bombycia fasciata, new species. 



Collar and prothorax ruddy brown ; patagia crested, gray, edged with dark 

 brown ; posterior portion of thorax gray ; abdomen smoky brown ; base of 

 legs clothed with rosy hairs, primaries, ground color light purple brown, suf- 

 fused at base and terminal portion of wing with light whitish green and 

 crossed by a broad median band of same color ; the basal green portion of 

 wing is bordered by an indistinct, geminate, outwardly oblique, subbasal line, 

 angled inwardly on submedian fold and filled with light green ; at a short dis- 

 tance beyond a geminate t.a. line filled with ruddy brown runs parallel to 

 subbasal line, outer line of the two being broadly black ; median area with 

 small round black spot in cell and a wavy black median shade exterior to 

 spot ; t.p. line geminate, almost perpendicular, slightly outcurved opposite cell, 

 incurved on submedian fold ; inner line deep black, space between ruddy brown ; 

 at a point beyond t.p. line equal to distance between subbasal and t.a. lines 

 a perpendicular, lunulate, pale green line, the area beyond this being almost 

 entirely whitish green ; below apex of wing a slight black curved line, con- 

 tinued indistinctly as a greenish shade edged with dusky to anal angle, often 

 entirely absent ; terminal black line slightly lunulate ; fringes rosy gray. Sec- 

 ondaries dark smoky gray, lighter along outer margin, with traces of black 

 subbasal line and lighter median band. Beneath smoky, banded with lighter, 

 costa, apex of wing and fringes rosy ; small discal spot on secondaries. 



Expanse, 37.5 mm. 



Habitat. — Duncans, Vane. Is. (Oct. 1-7). 2 males, 9 females. 

 Type, Coll. Barnes. 



This species, which is very constant in markings in all specimens 

 before us, we consider distinct from both improvisa H. Edw. and 

 tearlci Edw. The latter species can at once be separated by its dull 

 gray color and lack of contrasting markings ; the median area is 

 scarcely lighter than the remainder of wing and there is no green 

 whatever present; Dyar is evidently in error in making it synony- 

 mous with improvisa Edw. The green basal area of improvisa is 

 more limited than in fasciata and of a decided apple green shade ; 

 the broad suffusion of greenish in outer portion of wing bordered 

 inwardly by geminate line is almost lacking in improvisa, being con- 

 fined to an apical patch continued as a waved line ; the course of 

 the t.a. line also differs in the two species ; in improvisa it is 

 strongly oblique below costa and well angled inwardly on submedian 

 fold; in fasciata it is much less oblique and the angle is not prom- 

 inent; this latter distinction holds good in 6 specimens of improvisa 

 and II of fasciata compared by us. 



