302 Teneina of Colorado. 



LiTHOCOLLETis — L. alnivorella (n. sp.) 



Palpi and antenna? rather -short for this genus, and tuft on the ver- 

 tex, al>-o small ; face, palpi, under surface of thorax and abdomen 

 and the legs silvery, the palpi a little darker on the outer surface ; 

 antennae and tuft silvery fuscus, or perhaps as correctly ash-broAvn ; 

 upper surface of thorax and forewings egg yellow, varying to golden 

 with change of light. There is a short basal, silvery white streak 

 along the dorsal margin of the forewings, and a longer median basa] 

 streak of the same color, and dark iHargined towards the costa. A silvery 

 white fascia immediately before the middle, posteriorly obtusely angu- 

 lated about the middle of the wing, and dark margined before, the 

 dark margin becoming more diffuse along the dorsal margin, where it 

 is produced forwards until it meets the basal dorsal white streak ; the 

 point of the angle of the fascia is sometimes margined behind by a 

 small dark-brown spot, and the fascia is widest on the dorsal margin ; 

 just behind the middle is a costal silvery white streak, and opposite to 

 it is a dorsal one, both strongly dark margined before, and both point- 

 ing a little obliquely backwards, this dorsal streak is placed imme- 

 diately before the cilia, and a little further back is a small triangular 

 dorsal silvery spot, dark margined before ; opposite to the space, be- 

 tween these two, is a straight silvery costal streak, also dark margined 

 before, which sometimes bends backwards and unites with the second 

 of the dorsal streaks referred to above, whilst its dark margin bends 

 forward and unites with the dark margin of the first one; further back 

 is a third costal streak which is small, straight and dark margined 

 before. Apical spot triangular and dark brown ; cilia silvery fuscus ; 

 hind wings and cilia a little darker than the cilia of the forewings. 

 Abdomen shining bluish black on its upper surface. Al. ex. less than 

 one-third inch. Spanish Bar. The larva is cylindrical and makes a 

 large tentiform mine on the under surface of the leaves of an Alnus, 

 (sp. '? not the black alder. ) 



L. salidfolieUa ? Clem, and Chamb. 



This species has heretofore been bred only from willow leaves 1 

 believe ; while these specimens were bred, both from willows and 

 poplars, and the mines were much larger than those from which I bred 

 salidfolieUa in Kentucky. I have little doubt, however, that it is the 

 j^ame species. If not,- it is very closely allied to salicifoliella. I have 

 gathered these mines at more than 10,000 feet, above sea level, more 

 abundantly than in Kentucky at 700. 



