517 



ning next to or actually inclosing the discal dots. A smaller species than 

 serratariq. The breadth of the coffee-colored border varies sometimes, as in 

 a Kansas specimen which is dark coffee-brown, with the outer third of the 

 the wings but a shade darker than the interior. 



Length of body, i, 0.55-0.80, ?, 0.65 ; of fore wing, i , 0.72-0.85, ?, 

 0.90 ; expanse of wings, 1 60-1.80 inches. 



Amherst, Mass., June (Peabody) ; Boston, Mass. (Sanborn) ; Maryland 

 (Mus. Comp. Zool.); Albany, N. Y. (Lintner) ; West Farms, N. Y. (Angus); 

 Philadelphia, Pa. (Grote); Illinois (Grote) ; Ithaca, N. Y. (Smith) ; New 

 Jersey (Sachs) ; Missouri (Riley) ; Lawrence, Kans. (Snow) ; Texas, March 

 7, April 21, July 4 (Belfrage). 



This is an exceedingly variable species. It is of the same size, and 

 very nearly allied to E. serrataria, but is never so yellow, and the wings are 

 less serrate, especially on the posterior half of the hind wings, which in 

 several examples is not serrate at all. Certain females are uniformly pale 

 ash-brown, of the same hue as in E vinulentaria, differing in this respect 

 from any of the allied serrated forms. Other females are yellowish-brown, 

 but still much less yellow than in serrataria. Usually, however, in both 

 sexes the wings are broadly margined with brown, with two or three black 

 apical spots, and the discal dots are large and distinct. The specimens are 

 always lighter than in effectaria, and less yellow than in serrataria. 



Although it does not exactly agree with Guenee's description of tigri- 

 naria, yet it does in the most important characters. He says the extradiscal 

 line is not bent below the costa, but it is usually nearly as much bent as in 

 E. pectin aria, though in worn specimens the bend is indistinct. It is evi- 

 dently his obtusaria Hiibner, as individuals agree well with his description. 



Larva. — Rather thick; body of uniform thickness throughout, with the 

 head no wider than the body, which is smooth, less tuberculated than usual, 

 there being only one or two small dorsal tubercles near the end of the body. 

 The body is pale gray, with brown blotches, and subdorsal series of reddish 

 longitudinal lines. Food-plant Impatiens noli-mc-tangere. — (Described from 

 Abbot's MS. drawings.) 



Endropia serrataria Packard. Plate 12, fig. 25. 



Geometra strraia Drnry, 111., i, 40, plate 20, tifj- 4> 1770; West, ed., i, 38, pi. 20, fij;. 4, 1837. 



;; A and 8 9. — This species differs from all the other species by the 

 body and wings being sulphur-yellow, the hind wings being deeply serrated, 



