253 



belongs, the wings being less falcate than in the other species, marcescaria 

 and tHpunctaria. The antennae are more broadly pectinated than in T- 

 wavaria, being in this repect intermediate between T. wavaria and tHpunc- 

 taria. Pale ash-gray ; head, palpi, and body being concolorous with the wings. 

 Fore wings marked as in T. ivavaria, having four distinct costal brown 

 spots, from which as many lines run parallel with each other to the costa ; the 

 second one includes the discal dot, but is straighter, not so much angulated 

 as in T. wavaria, nor so wide just above the discal dot; the two outer lines 

 become obsolete in the middle of the wing, but are indicated on the hind 

 edge, the third being close to the fourth, while beyond is a small dusky patch. 

 A row of intervenular black marks; fringe concolorous with the rest of the 

 wings. Hind wings with no marking, except the discal dot, which is quite 

 distinct. Beneath, pale ash, more uniformly so than in T. wavaria, tinged 

 faintly with ochreous, deeper on costa of fore wings. Discal dots present 

 on both wings, and three faint costal patches. 



Length of body, 48; fore wing, 0.64; expanse of wings, 1.40 inches. 



Sierra Nevada, Cal. (Edwards). 



Closely resembling T. wavaria, it differs in the more broadly-pectinated 

 antennae, the less angulated, narrower second line on primaries, and the duller 

 ash on under side of wings, which, especially the secondaries, are beautifully 

 marbled in wavaria; in these respects it resembles the species of Semiothisa. 



Thamnonoma wavaria Lederer. Plate 9, fig. 72. 



Phalauia-geomelra wavaria Liuu., Syst. Nat edit, x, 522, 1758. 



" Geometra wavaria Htibn., Scbra. Eur., tab. 11, fig. 55, 1796." 



Fidonia wavaria Trcits., Scbtn. Ear., vi (i), 302, 1827. ' 



Halia wavaria Dup., Lep. France, viii (iv), 402, pi. 163, figs. 3 and 4, 1829. 



Grammatophora wavaria Stepb., Nomencl. Br. Ins., 44, 1829 ; " Cat., ii, 126, 1829.'' 



Halia vauaria Stepb., 111., iii, 194, 1831. 



Halia ivavaria Boisd., Geu. Ind., 187, 1840. 



Fidonia wawaria H.-Scb., Scbm. Eur., iii, 88, 1847. 



Halia wauaria Stepb., Cat. Br. Lep., 159, 1850. 



Thamnonoma wavaria Lederer, Verb. Bot. Zool. Ges. Wien, 179, 1853. 



Halia wavaria Guen., Pbal., ii, 93, 1857. 



Walk., List Lep. Het. Br. Mus., xxiii, 944, 1861. 



6 $ and 5 9. — Antennae with longer pectinations than in T.subcessaria; 

 the fore wings produced toward the apex, the outer edge of the wing being 

 quite oblique. Hind wings with three well-marked scallops below the apex. 

 Body and fore wings pale chocolate-brown; hind wings paler. Palpi with 

 an ochreous tinge. Fore wings with the usual four costal spots, much as in 



