t6 ZYGiENID^ AND BOMBYCID.E 



Its first angle scarcely reaches the outer margin ; its second rests on 

 the outer band, enclosing a large transverse black spot ; its third 

 touches the outer margin but does not connect with the longitudinal 

 streak. The costal spot at the base is divided by a short oblique trans- 

 verse band, twinges blackish. 



Posterior wings rose, inclining to orange. A small black spot on 

 the costa beyond the middle, and a marginal row of five black spots 

 the first apical, the other three triangular with their bases inward, and 

 apices not reaching the margin of the wing. Fringes concolorous with 

 the adjacent parts of the wing. Beneath, all the wings are as above 

 except that the coloring is less intense. 



?. — Similar to the $ except that the basal band is narrower, and 

 the median bands are sharply angulated near the costa, and continued 

 along it slightly towards the base of the wing. The longitudinal 

 streak does not extend beyond the outer median band, but reappears 

 W near the outer margin connected with the angulate band. Fringes 

 *i' black, interrupted with yellowish. On the secondaries the apical and 

 third black spot are united and merged into a narrow black margin. 

 Fringes black at the apex only. 



Expanse of wings, 3 1.70, ? 1.40- 1.70 inches. Length of body, 

 0.70 inch. 



Habitat. — Downieville, California, (Coll. Dr. Behr.) 



This fine species I have named with much pleasure after Dr. Behr 

 of San Francisco, whose extensive collection containing many novel- 

 ties collected during a long residence on the Pacific Coast, has been 

 generously placed at my disposal for the purposes of this work. A. 

 Behrii may be readily distinguished" from its congeners by the black 

 head and thorax, which impart to it a most distinctive character. In 

 this respect it resembles A. Nevadensis, Grote. Two 5 ? examined, 

 showed no tendency to variability. 



3.-ARCTIA BOLANDERI, N. S. (PI. 3, fig. 13.) 



3 . — Anterior wings deep blackish brown ; costa and inner margin 

 narrowly edged with yellowish ; fringes the same color. The anterior 

 wings are marked as follows with dirty yellow : A narrow streak 

 between the median and internal veins reaching nearly to the outer 

 margin. A small spot on the costa indicative of an obsolete basal 

 band, and two narrow transverse bands, divergent on the costa, but 

 meeting on the longitudinal streak and continuing thence as one to 



