217 



originates farther from the sixth subcostal than usual, while the posterior 

 discal venule is very oblique and is not curved inward as in Aspilates. The 

 arrangement of the independent vein and discal venules is much as in Ortho- 

 fidonia. Hind legs long and rather thick ; the tarsi stout and as long as the 

 tibiae. Abdomen long and slender. Coloration : pure white, with black an- 

 tenna' and black dots and lines on the wings, and a yellow head and patagia. 



This genus may be recognized by having such small, acute, slender palpi, 

 by the plumose antennae, and the double subcostal areole. 



From the European Orthostixis, its nearest ally, it differs in the smaller 

 palpi and plumose antennae, while it may be always distinguished from 

 Aspilates by its beautiful mode of coloration and the other points already 

 stated. 



Zerene catenaria Guenee. 



Geometra catcnaria Cramer, Pap. Exot., iii, 61, pi. 228, fig. 3, E. 

 Geometra eatenaria Drury, 111. Nat. Hist., i, 17, pi. 8, fig. 3, 1770. 

 ritahena eatenaria Fabr., Eut. Syst., iii (part ii), 140, 1794. 

 Orthostixis eatenaria Httbn., Samml. Exot. Schm., bd. ii, 1806. 

 Bupalus eatenarius Westw. ed. Drury, i. 16, pi. 8, fig. 3. 

 Zerene eatenaria Guen., Phal. ii, 222, 1857. 



Walk., List Lep. Hot. Br. Mas., xxiv, 1136, 1862. 



10c? and 10 9. — This common moth is easily 



recognized by its large size, the snow-white, 



thin wings. Head ochreous-yellow in front; 



thorax yellowish at the base of the patagia. 



Fore wings white, with a black, narrow, zigzag 



line on the inner third of the wing; the line 



Zereue eatenaria. j s m ore r less obsolete, often having venular 



dots. A distinct discal spot. A scalloped, black line half-way between the 



discal dot and the outer edge. Fringe checkered with black dots. Male 



antenna? very plumose. End of male abdomen yellowish. 



Length of body, <?,0.70, 9, 0.50-0.70; length of fore wing, <?, 0.85, 9, 

 0.65-0.75; expanse of wings, 1.10-1.80 inches. 



Brunswick, Me., September 1-10, abundant (Packard); Portland, Me. 

 (Morse); Salem, Mass., October 15 (A. F. Gray); Cambridge, Mass. (Harris 

 Coll.); Salem, Mass. (Einerton) ; Albany, N. Y., September 8-19 (Lintner); 

 New Jersey (Sachs); Waterbury, Conn., September 20 (W. H. Patton); Plum 

 Creek, Colo., September 22, 25 (Lieutenant Carpenter, Hayden's Survey). 

 This common moth is single brooded, not appearing until ahoul the 

 28 p u 



