NORTH AMERICAN LEPIDOPTERA. 127 



It is true that as I have shown that this is the result of a protuber- 

 ance on the member itself, but that fact was before unknown, and 

 yet the generic importance of the mere tuft of scales was never 

 questioned. 3. It is an easily observed character. 4. It is conunon 

 to both sexes, which is a very important matter. 5. It is ho more 

 variable than venation and antennal vestiture. 6. I have not yet 

 found a single instance in which it was absent and present in different 

 specimens of the same species. As heretofore, I give for all genera 

 the names of extinct, or likely to be extinct, Indian tribes of North 

 America. 



Synopsis of Species. 



1. Fore wings with red basal cross-veiu more or less complete 2. 



" without this 3. 



2. Basal line strongly dentate caligiiiella. 



Basal line nearly straight tricolorella. 



3. Fore wings with black line running from basal Hue at costa to centre of mid- 



dle field at inuer margin ; larva in horu-shaped case....iiifli^euella. 

 Fore wings without this line 4. 



4. Fore wiugs light gray on anterior middle tield ; larva in berries without case. 



vacciuii. 



" not light gray 5. 



r>. Fore wings dark dull fuscous, lines indistinct; larva in cylindric case smaller 



at both ends juglaii<li»«. 



" blackish, lines distinct amplexella. 



1. M. tricolorella Grt, Bull. U. S. Geol. Surv. Terr, iv, 694, 1878 {Acro- 

 6as/s).— Expands 20 mm. Fore wings blackish, shaded with whitish gray on 

 terminal space outwardly, on costal region, over the fused discal points and on 

 basal space. A broad white band before the anterior line. Below median vein 

 this band is edged outwardly by a dusky shade line, and this is followed by a 

 yellow red shade, before the outwardly oblique black anterior line. Outer line 

 followed by a whitish shade, roundedly indented below costa, followed by the 

 blackish ground color iu terminal space, and this by the whitish gray terminal 

 shading. A dotted terminal black line ; fringes pale. Secondaries pale fuscous, 

 with paler fringes. Beneath, fore wings dark ; hiud wiugs pale fuscous. 



Maine, Nevada, California. 



I can see no difference between the Eastern and Western speci- 

 mens. 



2. M. aiiiplexella Rag., Diag. N. A. Phyc. p. 3. 1887 (Jcroirtsis).— Expands 

 15 — 17 mm. Fore wiugs short, costa slightly rounded, purplish fuscous, with a 

 snowy-white costal patch enclosing the distinct black discal spots. First line 

 snowy-white, oblique, rounded; second line dark gray, slightly sinuous, dis 

 tinctly black margined on both sides. Hiud wiugs fuscous. 



North Carolina, Texas, Missouri. 



