425 



wings. Fore legs brownish externally. Hind til)i.v rallicr long and full; 

 tarsi of the average length, being much longer than in T. ranadaria. Alxio- 

 inen with two rows of conspicuous black spots. 



Length of bod}-, i , 0.50; of fore wing, 9, O.G.^) ; expanse of wiiiirs, 1.25 

 inches. 



Massachusetts (Sanborn); New Salem, N. II. (J. X. l^ask, Coll. Host. 

 Soc. Nat. Hist.). 



This species may be known iiy I lie stontly-pectinaled anlcnn;e, the 

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

 abdominal spots, and the outer row of l)lack dots on l)otii wings. The two 

 inner c().>Jtal spots are more distinct, while the lines are (iiinler than usual. 

 The black dots are [minted, tin; 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 l)ack and the sutures of a deeper hiu', 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 Populus tremubides and fustiuiala. 

 The chrysalis is entirely black." — Guen^e. 



Tephrosia canadaria Guende. Plate 11, fig. 14. 



Tephrosia canadaria Gueii.!!, Pbal., i, 2(53, ISoT. 



Walk. ! !, C'at. Lep. Hot. Br. Mils., 402, 1860. 

 Tephrosia lanailariu Pack.. Prnc. Bost. Soc. Nat. Hist., xvi, :!:?, l-STl. 



12 c^ and 3 9. — This is the largest species of the genus, and approaches 

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

 characterized by the very long hind tibife. Antennse less pectinated than in T. 

 cribrntaria ; hind wings with a quite deep notch. iJody and wings a.sh ; 

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

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

 thorax shaded with dark l)rown. 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 di.scal dot and on the submedian vein. Two 

 black spots just outside the two lower scallojjs. A fiiint, sui)maririnal. white, 

 51 V II 



