17 



originates fartlicr Iroiii the si.vlli siihcostiil lliaii usual, wliilt' tlic |)(isU'ri(>r 

 (liscal venule is very (>l)li(iiie and is nol curved inward as in Axpilales. 'Wv 

 arrai)geinent of llic ind(>[)en(lent voin and discal venules is niucli as in Orllin- 

 ficlonhi. Hiad legs long and rather thick ; tii(> tarsi stout and as long as tlic; 

 tihi;v. Alxloiiien long and slender. Coloration: pure white, with lila(d< an- 

 •tcnn;e and black dots and lines on the wings, and a yellow head and patagia. 

 This genus may be recognized ])y having such small, acute, slender pal|)i, 

 by the plumose antenna', and the double sul)costal areole. 



From the European OrHiosdris, its nearest ally, it dilfers in the smaller 

 ])alpi and plumose antenna', while it may l)e always distingnisiied from 

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

 stated. 



Zerknk catenaki a ri!uene(\ 



Geometia catenaria Cnimcr, I'.ip. Exot., iii, (il, iil. 2W, tij;. :!, E. — 'T ^ ^ 

 Geometra calenavia Drury, 111. Xat. Hist., i, 17, pi. 8, fift. ;t, 1770. 

 Dialwna catenaria Fabr., Eut. Syst., iii (piirt ii), 140, 1794. 

 Ortlwstixis caltnana Hiibii., Saimnl. Exot. Schm., btl. ii, 180(). 

 liiipahia catenarius We.stw. vA. Drury, i, 16, pi. 8, Iii;. 3. 

 /Avene catenaria Giicii., Pli.il. ii, 222, 18ij7. 



Walk., List Lup. Het. Br. Mus., xxiv, l\M\ ia(>2. 



10<?and 10 9. — This common moth iseasilv 

 recognized by its large size, the snow-wiiife, 

 thin wings. Head ochreous-yellow in front; 

 thora.x 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 

 is more or le.ss obsolete, ot\en 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 dot.s. Male 

 antenna? very plumo.se. End of male abdomen yellowish. 



Length of body, <?,0.7(), 9, 0.50-0.70; length of fore wing, <?, 0.85, 9, 

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



Brun.swick, Me., September 1-10, al)un{lant (Packard); Portland, Me. 

 (>[()rse); Salem, Mass., October 15 (A. F. Gray); Cambridge, Mass. (Harris 

 Coll.); Salem, Mass. (EmertoiO ; Albany, X. Y., Sept(Mnber 8-19 (Linlner); 

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

 Creek, Colo., Septeml^er 22, 25 (Lieutenant Carpenter, Hayden's Survey). 

 This common moth is .single brooded, not appearing until about tln^ 

 28 p II 



Zcrene c.iteiiaria. 



