BOARMID.E—TEPHROSIA. 179 



margin reg'nlarly dotted with black ; cilia creamy-white or 

 browuish-white, dashed with brown. Hind wings broad, 

 rounded and strongly crenulated behind ; white, dusted with 

 brown, and having three hardly parallel undulating black- 

 brown transverse lines, two near the middle, the first often 

 incomplete, the second distinct, and sometimes having an 

 attendant brown shade or band, the third also well marked 

 and much indented ; hind margin edged by a brown line, 

 having flattened black dots between the crenulations ; cilia 

 white, intersected with pale brown. 



Female extremely similar, but with quite simple antennae, 

 and the abdomen stouter, but shai'ply pointed, often showing 

 a long ovipositor. 



Underside creamy-white, or brownish-white, the fore wings 

 rather clouded at the base and in the middle with smoky- 

 black ; no distinct markings, except the black marginal dots, 

 but a faint indication of the second transverse line is visible 

 on the hind wings. Body and legs pale yellowish-brown. 



Exceedingly variable, and more esi^ecially so in local and 

 climatal races. The most noticeable is a form which, Avith 

 all the markings exactly as in the type, has the whole surface 

 of the wings, with the thorax, so thickly dusted as to be fully 

 tinged with ochreous-brown in varying degrees. This form 

 was described as a distinct species, under the name of T. 

 laricaria, by Mr. Stainton in his Mcmual. By others it has 

 been treated of under the name of T. crepuscularia., but the 

 correctness of application of this latter name is open to 

 question. The subject of its distinctness as a species 

 has been treated upon and debated in this country at enor- 

 mous length, and not wholly without acrimony ; but this 

 healthy and somewhat drastic treatment has had the effect 

 of crumbling away every atom of evidence which had been 

 brought forward to establish its distinctness as a species, and 

 of leaving no choice to an unprejudiced mind but the con- 

 clusion that these two races form but one species. The most 

 remarkable circumstance in connection with this ochreous- 



