(uo i»iirallcl. hhifk, \v;iv_\ lilies (in ciicli side, and the discal d.)f isdislinci, 

 sonictinics siuTonndcd l._v a lilack rin^-; hcyiiml llic nu'dian hand is a hroad 

 while iian(L eunfainiiii;- a thisky waved Hne, with an anolc corresiiDndinir to 

 ilie allele in Ihe onteredge ol'lhe hiaek nn^han hand: (he while hand is often 

 limited l)y a rennlarly-seaHojied hlark hne; hali-way lielween Ihis line and Ihe 

 edt'-e ol'tiie wing- is a white scalloped line, willi a s(|nai-e hkndv paleh helhm 

 the costal termination (sonu'tinies the three snhmai-<.diial lines ai-e ohsolete 

 and the outer third ol'lhe win<i- is ([niie clear v.hilish, with scattered dots, or 

 with a llesh-tint). The hind w inns are whitish, with fiv(^ or six parallel, 

 scalloped, tlnsky lines beyond the discal dot. 



Lciiirth of body, <?, 0.44, 9 ; of fore wing, d, 0.55, 9 ; expanse of wings, 

 1.15—1.25 inches. 



Caribou Island, Sonthern i.ahradoi-, Jidy 7-24 (Packard, Williams Col- 

 lege Exp, IBGO); London, Canada (Sannders): 'i'reat's Island. Kastport, Me.. 

 .Ink 16 (Shurtleft^) ; JJriinswick, Me., June, -Inly (Packard): INntland, Me. 

 (M(n-.-^e,); Salem, Mass., August 21 (Packard ; Xahant, Mass. (iMocring); 

 Brookline. Mass., May 'M (ShnrHeir) ; Candiridge, Mass. {Harris Coll.): 

 Spriugliehl, Mass.,. .May (Dimmock); Dedham, Mass. (Very); New York, 

 August 2 (Mead) ; ^^'est Farms, N. Y. (Angus) ; PM-ooklyn, N. Y. (Graef) ; 

 Ithaca, N. Y. (Smith): Brewster\s, N. Y. (Crote) ; New Jersey (Sachs): 

 Philadelphia, Pa. (Amer Eut. Sue.) ; Lansing, j\[ich. (A. J. Cook) ; "Canada, 

 New York" (Gruence). 



This very al)undant species may be known by the whitish s,n-ound -color 

 of the wiuiTS, and the heavy, l)lack, median Itand with a simple tooth in the 

 median venule, and by the absence of a simis l)elow the costa, while the 

 hind wings have about six usually well-marked, dark, scalloped lines. 



The two Labrador examples are rather smaller than those found farther 

 south. 



Rheumapter.v i;n.\ncu]LATA Packard. I 'late 8, (i<r. 75. 



" Geomctra unatiguluta Haw., Lcp. Brit., '.i'.Vi, IWS-Id." 



Harpuhjco unanyulatu Steph., Nonicucl. IJr. Ins., 44, 182il; III., iii, 'J'J,'), 18:il. 



Larenlia unangulata Il.-Scb., Schtii. Eur., iii, 150, 1847. 



Mclaiilhia amnUmlata Stepb., Cat. Br. Inn., 214, 18,"i0. 



Alclanipjic unanrjulala Guen., Plial., ii, :W4, LS.'j". 



Wall;.,* Iiist L(|i. Il(.(. Iii-. Mils., xxv, 1286, 18()2. 



2 i and 4 9. — This species may best be de.scribed by comparing it with 

 R. lacustruta, with w hich it is liable to be contbunded. The wings are clearer 



" Tljo iollowiiijr synoii.viiis arc also ,.i,'ivcu by M. Guendc and Staadliigor : bkulorala Borkli. 1, :!'.tli: 

 Fi.s. Rosl., 98?; timiiiaildla lliilin.. :!8(> ? .»; l',<iisil., 210. 



