50 



those preceding or following them. They are quite active, moving 

 up and down their burrows rapidly. 



" By the middle of May the caterpillar has worked its way back 

 to the place of entrance in autumn, enlarging its way to accommo- 

 date its increased size, and, after loosely stopping the upper part 

 with a few chips, retires and changes to the pupa. It is then .6 

 of an inch in length, slender, cylindrical. Color white, except 

 the oblique disc or plate terminating the head, which is made dark 

 by many teeth-like elevations on its surface. The abdominal seg- 

 ments are clothed with hairs, and the last four segments have each 

 a transverse row of teeth on the dorsal part, reminding one of a 

 Tortrix or Cossus pupa. The conical tip of the abdomen has 

 many teeth ; these teeth, together with the roughness on the head, 

 enable the pupa to worm its way up and down the burrow with 

 readiness. When removed from the stem to the table, it travels 

 about, rolling and worming its way very much as do the pupae of 

 certain stem-boring beetles. The wing and limb covers are free 

 for a considerable distance from their tips." (Kellicott.) 



PTEROPHORUS GRANDIS. 

 Lioptilus grandis Fish, Can. Ent, Vol. XIIL, p. 141 (1881). 



Expanse of wings, 34 mm. Head, palpi, antennae, thorax and 

 abdomen of nearly a uniform pale brownish-ochreous color. Legs 

 brownish ochreous, with tarsi somewhat lighter. 



Fore wings pale brownish ochreous, in some species with a few 

 scattered faint brownish dots on the second lobe. Fringes slightly 

 darker. Hind wings very slightly browner than fore wings, with 

 the fringes still darker. 



Habitat. California. Early stages and food plant unknown. 



PTEROPHORUS RILEYI, n. s. 



Expanse of wings, 29-31 mm. Head, thorax and fore wings 

 pale brownish white or bone color. Back of head and collar dull 

 cinnamon brown. 



Fore wings more or less sprinkled with brown scales, especially 

 along the costa and on the outer half of the cell ; an oblique brown 

 line at the end of the cell extends upward in the direction of a 

 brown costal streak, between which and the apex are generally two 

 equidistant brown dots, and there is a similar one on the cleft 

 within the apex. Three brown dots occur on the outer margin pf 

 the second lobe, one on the apex, one on the middle and one on the 

 anal angle. Hind wings pale fuscous, darker than the fore wings. 



