52 INSECUTOR INSCITI^ MENSTRUUS 



The two species are, however, quite distinct. In burgessiella 

 Zell. the costal spots are paler and the first one, as given in 

 Zeller's description, and shown in his accompanying figure, 

 is concave outwardly, ending in a point, and the second costal 

 spot is greatly produced along the costa, being about three 

 times as long as it is broad. 



Gracilaria vacciniella, new species. 



Face white, crown dark purplish, extending well over in 

 front ; labial palpi white, the terminal joint well shaded with 

 black outwardly just before apex; maxillary palpi white; 

 antennae annulate with yellowish at the joints of the segments; 

 thorax concolorous with the fore wings. Front and middle 

 legs dark purplish, except the tarsi, which are white, with the 

 joints tipped with black, the tibiae tufted ; the hind legs, with 

 the basal portion of the femora, a shining, yellowish white, 

 the apical portion quite dark ; tibiae and tarsi light yellow gray, 

 the latter heavily shaded with brown on the upper side, espe- 

 cially near the tarsal joint. Abdomen yellow gray above, 

 shining pale yellowish below. The fore wings dark purple 

 with irridescence, with two bright, shining costal spots ; the 

 first spot triangular, with basal margin oblique and rounded, 

 the posterior margin nearly perpendicular to the costa, the 

 apex reaching the fold; the second spot, which is separated 

 from the first one by a distance about equal to the width of 

 the first costal spot, is broadest on the costa and is quite convex 

 on the side directed toward the dorsum; base of wing below 

 the fold yellow; cilia smoky gray, heavily shaded about the 

 apex, almost concolorous with the wing, the usual lines in the 

 apecial cilia being very indistinct. Hind wings dark, smoky 

 gray, with cilia somewhat paler. Expanse 11 mm. Described 

 from one of a number of specimens, bred by W. G. Dietz on 

 vaccinium at Hazleton, Pennsylvania, July 29, 1888. 



Type, Cat. No. 19324, U. S. Nat. Mus. 



This species is near burgessiella Zell., but may be separated 

 from it by the shape and color of the costal spots and the pres- 

 ence of yellow at the base of the dorsal edge. 



The species which feeds on the leaves of the red maple has 

 long been known, but heretofore wrongly placed under bur- 



