Oct., '07] ENTOMOLOGICAL NEWS. 327 



ticeable over the cocoon, somewhat like the network of ropes outside of 

 a balloon. This network soon disappears, however, probably weather- 

 ing off. 



EXPLANATION OF PLATES. 



From Photographs by the Senior Author, all but the First Two 



Much Enlarged. 



Fig. I. Oriental moth at rest on petiole of maple leaf. 



Fig. 2. Same at rest on tomato leaf. 



Fig. 3. First instar seen from above. Microphotograph. Spines 



retouched. 



Fig. 4. Second instar from above. Microphotograph. 

 Fig. 5. Same in side view. Microphotograph. 

 Fig. 6. Third instar from above. Microphotograph. 

 Fig. 7. Same from side. 

 Fig. 8. Fourth instar, side view. 

 Fig. 9. Same, dorsal view. 

 Fig. 10. Fifth instar, side view. 

 Fig. n. Sixth instar, side view. 

 Fig. 12. Same, dorsal view. 

 Fig. 13. Seventh instar, side view. 

 Fig. 14. Same, dorsal view. 



Thecla (Incisalia) polios. 

 BY HENRY SKINNER. 



This species was described by Cook and Watson in the 

 Canadian Entomologist, Vol. XXXIX, Page 202, 1907. I 

 have known the butterfly for about twelve years and I possess 

 thirty-five specimens from various localities. I do not con- 

 sider it specifically distinct from Thecla mossi Hy. Edws. I 

 have examined the type of mossi and through the kindness 

 of Mr. William Beutenmuller possess a fine colored figure of 

 it. I also have homotypes. The species has a wide distribu- 

 tion and is quite variable. In mossi there is a white edge 

 to the mesial band on the underside of secondaries, and in 

 some specimens this becomes a hoary band or fascia about 

 2 mm. wide. The species extends across the continent from 

 the Atlantic to the Pacific. I have specimens from New Jer- 

 sey, New Hampshire, Nova Scotia, and Colorado. I have 

 seen specimens in the collection of Mr. T. N. Willing, taken 

 at Olds, Alberta, Canada, and the type ( $ ) come from Esqui- 

 malt, Vancouver Island. The species is figured on pi. 38, fig. 

 331, in Wright's Butterflies of the West Coast. 



