14 THE CANADIA-N ENTOMOLOGIST. 



Siavana rigida, n. sp. — Ground colour a somewhat yellowish brick 

 red, through which a luleous base api)ears locally. Head and collar a 

 deeper, more rusty red-brown. Thorax and abdomen otherwise immacu- 

 late, concolorous. Primaries without strong contrasts. The costa is a 

 deeper red-brown, and in the costal area there is a light gray powdering. 

 T. a. line single, very slender, slightly irregular, a little outcurved, bright 

 red-brown, tending to disappear altogether. T. p. line slender, crenulate, 

 single, with or without minute black venular dots ; as a whole, nearly 

 parallel with the outer margin. S. t. line a series of vague gray venular 

 dots, which may be altogether wanting. The colour deepens a little, and 

 becmnes somewhat smoky at the outer margin, where a narrow yellow 

 line marks the base of the fringes. Median shade line crimson red, 

 rigidly oblique from the costa near the inception of t. p. line, touching the 

 lower outer angle of the reniform and reaching the inner margin just 

 within the t. p. line. This line tends to disappear and may be entirely 

 absent, and there may or may not be a prominent black patch on 

 the inner margin, filling the space between the t. p. line and median 

 shade line. Orbicular a small blackish dot. Reniform moderate in size, 

 rather narrow, slightly oblique, somewhat constricted centrally, narrowly 

 brown ringed, the filling luteous, but not contrasting. .Secondaries 

 a little paler at base than primaries, but darkening outwardly to the same 

 shade. The median shade of primaries is obviously continued across the 

 secondaries, and the t. p. line is vaguely traceable. There is also a 

 slightly-waved, narrow, yellowish line at the base of the fringes. 

 Beneath there is a crimson powdering, which becomes paler along the 

 inner margin of the secondaries. A vague, common outer line. 



Expands 45 mm. =t.8o inches. 



Habitat: Huachuca Mts., Arizona. One male and one female from 

 Dr. Barnes. 



The species resembles the eastern repanda ( Harveya auripennis, 

 Grt.) in general appearance and in colour. In the $ the antenna in the 

 new species are decidedly more slender and the ciliation of the joints, 

 though longer, is more sparse. So in rigida the apex is marked and the 

 outer margin is a little excavated below it ; in repanda the apex is obtuse 

 and the outer margin is rounded. In the older species the median shade 

 line is smoky, somewhat diffuse, and a little sinuate, almost parallel with 

 the t. p. line ; in the new species this line is rigid and crimson. Alto- 

 gether, the differences, though not striking, seem to authorize the new 

 species. 



