PHEOSTA RIMOSA 



GENUS, PHEO'si A ( " bro wn-colored " ) . 

 SPECIES, RIMOSA (" cracked," " with chinks"). 



We found the eggs on a poplar up the Lane. They 

 were small and hemispherical, opaque white in color. 



After four days the larvae ate their way out, and 

 very tiny they were. They were whitish green, with a 

 subdorsal row of black dots, two to each segment, and 

 a lateral row, one to each segment. The first segment 

 had a black raised patch and was somewhat swollen. 

 The second and third had two large dorsal black spots. 

 The eleventh segment had a black tubercle on the 

 dorsum. The anal end was black, as was the head, 

 which was also very much polished. The feet and 

 props were black also. 



Five days later they molted. The head was black 

 above and brown on the face. The legs and props 

 were black. The body was green, slightly striated 

 with yellow, and had a black caudal horn. 



Three days later came the second molt. The head 

 was paler than the body, which was of a greenish-pur- 

 ple color, with a faint dorsal line of a darker shade. 

 The venter was green. The spiracles were black dots 

 encircled by white. 



The third molt followed in four days. The cater- 



223 



