131 



thorax chestnut-brown. Abdomen fuscous tinged with brownish-rufous. Pri- 

 maries : chestnut-brown in color, else similar to male. Secondaries similar to 

 male. 



Expanse: 32-34 mm. 



Closely allied to O. tenuimacula B. & McD. with which it was 

 confused in the Barnes Collection, The antennae, vestitiire and type 

 of maculation are similar, but O. mediomacula is considerably smaller 

 and less heavy bodied ; the palpi are considerably shorter ; and the valve 

 of the male genitalia is much less elongated, more lobate, and lacks 

 the dorso-caudal prolongation present in O. tenuimacula. 



Type locality: Paradise, Cochise Co., Ariz. 



Number atid sexes of types: Holotype $, 1-7 Oct.; Allotype 9, no date. 



Orthosea nongenerica sp. nov. 



$ : Antennae shortly bipectinate. Head, palpi, tegulae, patagia, thorax 

 and abdomen ochreous, violaceous, or rufous. Primaries : ground color vari- 

 able but concolorous with the thorax, in the holotype, violaceous ; the costal 

 margin slightly tinged with ochreous in some specimens ; basal line not present ; 

 t. a. line faint, black, geminate, often blended with the ground; claviform and 

 orbicular absent ; median shade black, more or less strong, rather broad, waved, 

 oblique outwardly from costa thru base of reniform to the lower end of the 

 cell, thence inwardly oblique to inner margin ; t. p. line similar to t. a. line, but 

 somewhat more distinct, obliquely and outwardly rounded to vein 4, thence 

 obliquely and inv.ardly rounded to the inner margin ; reniform moderate, 

 upright, constricted centrally, outlined by pale ; s. t. line pale, nearly parallel 

 to the outer margin, inwardly marked by a black shade on the costa and a row 

 of black dots; fringe, ochreous basalh% fuscous outwardly. Secondaries: uni- 

 colorously fuscous, with a slightly darker discal mark, and pinkish or ochreous- 

 pink fringes. Beneath: greyish, tinged with some ochreous and rufous, with 

 an indistinct common line, and more or less distinct discal marks. 



$ : Antennae very finely clothed with appressed cilia with longer setae 

 to the joints which are bead-like, but not serrate. Head, palpi, tegulae, thorax 

 and ground color of the primaries chestnut-brown. 



Expanse: 34-36 mm. 



Closely allied to 0. tenuimacula and O. mediomacula. From the 

 former it is at once distinct by the difference in the valve of the male 

 genitalia, in this respect, being like mediomacula, from which it differs 

 by possessing a different shaped clasper. None of these species fit 

 well into Orthosia. They all seem to lack the distinct crest to the 

 tegulae, and in reality have overhanging cilia from in front of the 

 eyes. According to Hampson's keys they would fall into Scriptania or 



