425 



wings. Fore legs brownish externally. Hind tibiae rather long and full; 

 tarsi of the average length, being much longer than in T. canadaria. Abdo- 

 men with two rows of conspicuous black spots. 



Length of body, <? , 0.50; of fore wing, 9, 0.65; expanse of wings, 1.25 

 inches. 



Massachusetts (Sanborn); New Salem, N. H. (J. N. Trask, Coll. Bost. 

 Soc. Nat. Hist.). 



This species may be known by the stoutly-pectinated antennae, the 

 branches, in drying, interlocking somewhat at the end ; by the conspicuous 

 abdominal spots, and the outer row of black dots on both wings. The two 

 inner costal spots are more distinct, while the lines are fainter than usual. 

 The black dots are pointed, the line connecting them being really dentate. 

 The marginal dots are more distinct than in the other species. It is a pecul- 

 iar form and readily recognized. 



Larva. — "The caterpillar is slightly attenuated anteriorly, of a gray- 

 testaceous, with the back and the sutures of a deeper hue, and a wood-brown 

 stigmatal line. The head is concolorous and profoundly divided into two 

 points. There are two small tubercles on the 11th ring, the rest of the body 

 without any eminence. It lives on the Pojndus tremuloides and fastigiata. 

 The chrysalis is entirely black." — Guene'e. 



Tephrosia canadaria Guene'e. Plate 11, fig. 14. 



Tephrosia canadaria Guun. !!, Phal., i, 203, 1857. 



Walk. ! !, Cat. Lep. Het. Br. Mus., 402, 1860. 

 Tephrosia canadaria Pack., Proc. Bost. Soc. Nat. Hist., xvi, 33, 1874. 



12 (f .and 3 9. — This is the largest species of the genus, and approaches 

 Cymatophbra more in its markings than any of the following species. It is 

 characterized by the very long hind tibiae. Antennae less pectinated than in T. 

 cribrataria ; hind wings with a quite deep notch. Body and wings ash ; 

 wings thickly speckled with brown, often with a reddish-brown tint. Head 

 with a transverse dark band in front of the antennae. Hind edge of the pro- 

 thorax shaded with dark brown. Fore wings with three lines, the inner near 

 the base, regularly curved (often almost obsolete) ; second line broad, diffuse, 

 nearly touching the discal dot. Outer line somewhat sinuous, slightly scal- 

 loped, especially opposite the discal dot and on the submedian vein. Two 

 black spots just outside the two lower scallops. A faint, submarginal, white, 

 54 P H 



