Notes and Descriptions, No. 2. 27 



possesses the peculiarly even brilliancy of tlie scales on the upper sur- 

 face of anterior wings, which characterizes this pretty little species. 



Catocala formula, n. s. (Plate 4, fig. 5, % ). 



Anterior wings dark cinereous. Basal half-line black, distinct, an- 

 gulated. Beyond, and obliquely placed with regard to this line, is a 

 small black spot in the sub-basal space, surrounded by paler, slightly 

 greenish scales. Transverse anterior line black, oblique, even, with 

 one prominent inward reflection at internal nervure, preceded by brown 

 scales. Median space dark cinereous ; an angulated median shade line 

 extends from costa to reniform spot, above. Reniform spot large, ill de- 

 fiued superiorly where it is projected, with a black encircling line, 

 filled in with pale greenish or bluish scales, with an internal brown an- 

 nulus. Sub-reniform spot, complete, rounded, somewhat parallel, ovate, 

 unconnected with t. p. line, very contiguous to the reniform, the an- 

 nuli touching between the spots, centrally concolorous with the rest of 

 the median space. Transverse posterior line black, even, with out 

 prominent teeth, its total shape resembling a bracket ([), angulated 

 below costa, whence it runs outwards in a parallel direction then ex- 

 cavate in a transverse direction to above first m. nervule, where a 

 slight projection shows a rudimentary "tooth," thence straightly, some- 

 what undulated, to above internal nervure where it makes an inward 

 reflection corresponding to that below the costa, joining internal mar- 

 gin with a slighter outward excavate reflection. The t. p. line is fol- 

 lowed by a prominent brown band. Sub-terminal line serrate, whitish, 

 followed by a dark cinereous coincident shade. A terminal series of 

 black interspaceaJ dots ; fringes concolorous with the wing. 



Posterior wings bright yellow. The median black band much as in 

 C. fratercula, nobis, being angularly projected above the interruption of 

 the terminal black band in the male and roundedly, in the female. The 

 isolated portion of the terminal black band is rather elongated. A 

 blackish longitudinal shade streak, indicated by longer, hair-like scales. 

 Under surface bright yellow, marked as usual, with a sub-terminal 

 and terminal black band on either wing. 



Head and thorax cinereous; prothoracic pieces with a prominent 

 superior black line. Abdomen dull testaceous, anal segment darker. 

 Beneath whitish ; legs clothed with grey scales ; tarsi sub-annulate. 



Exp. % and 9 , 1.60 to 1.80, inch. Length of body, 0.80. 



A number of specimens of both sexes examined. 



Habitat. — New York State. Rhode Island. Coll. Ent. Soc. Pliila. ; 

 our own Collection and that of Mrs. S. \Y. Bridgham, X. Y. 



