161 



shade lines. Fringes concolorous, even. Terminal lines obsolete. Beneath 

 pale yellowish ochery with double lines and faint discal marks. Abdomen very 

 pale ; thorax like primaries. 



Bzpatise, 40 m. m. Habitat, Chautauqua Co., N. Y. 

 Specimens received from Mr. Geo. Norman vary from ocher 

 yellow to smoky testaceous in color. 



Pseudorthosia n. g. 



The habitus and shape of the wings are like Orthosia. Eyes naked, with 

 lashes. Front broad ; clypeus protuberant, rugose. All the tibiae armed, the 

 fore pair with a double row terminating in longer spinules. Male antennae 

 bristled, brush-like. Thorax and abdomen without tufts, the former propor- 

 tionally heavy and square. 



The broad rugose front must be used to separate the genus from Agrotis ; its 

 natural position seems with Orthosia and allied genera. The color is almost 

 that of Calymnia. 



Pseudorthosia Tariabilis Grote. 



$ 2 .—A rather large pale yellowish or fawn colored species with variably 

 distinct ornamentation, thorax and fore wings light yellowish buff, quite pale, 

 sometimes lightly soiled with fuscous. Primaries with the ordinary lines even, 

 the t. a. line somewhat angulated, divergent. The discal dots are usually dis- 

 tinct and black ; the orbicular an oblique streak, the reniform narrow, upright. 

 Median shade, variably distinct. As in Orthosia purpurea, the subterminal 

 line is usually preceded on costa by a dark shade. Terminal interspaceal dark 

 dots ; fringes concolorous. Hind wings almost whitish, very pale, tinted like 

 fore wings, with more or less distinct subterminal transverse shade. Beneath 

 with dots and a common line more or less distinctly marked on the costae. 



Expanse, 38 m. m. Five specimens. " Sept., Oct.," Mr. Jas. Beli- 

 rens, Sauzalito. 



Plusia fratella Orote. 



$ 9 . — Closely allied to Plusia gamma, from Europe and America, but hard- 

 ly more than half as large and differing in the details of the ornamentation. 

 The color of the fore wings is the same. The metallic mark la very narrow 

 and whitish, and its outer extremity is disconnected as a small silvery dot. The 

 t. p. line is distinctly geminate, more even and without the interruption on vein 

 3 and the dentations above vein 1 of P. gamma. The subterminal line and the 

 submetallic preceding shade is very similar in the two species. Hind wings 

 and under surface very similar to those of its ally, from which it may be easily 

 separated by the characters above given. 



Expanse, 30 m. m. Habitat, Texas (0. Mcske). 



BUL. BUr. bOC. NAT. SCI. (21) SErTEMBKU. 1871. 



