B. C. ENTOMOLOGICAL PROCEEDLXGS, I'JIL 35 



most conspicuous on the lar\a. There are six other dark h'lies, 

 three on each side of the central band near tlie head at the hinder 

 part of tlie 1st, 2nd. and jrd segments pointinj; diagonally forward 

 from the central band. At the base of the last pair of marks are 

 indistinct bands margining the central band. Tiie central band has 

 a central line widening a little on each segment except on the last 

 three, where it is hareh traceable. Head pinky brown with blackish 

 blotches. There are groups of three and four dark dots on both 

 sides of each segment, situated in the darkish band on each side of 

 the central band and also dots below the spiracles. There is a short 

 putty colored line exteniiing backward from each spiracle. 

 B. improvisn, H. Edw. 



Ova hatched at the beginning of May, 1909. Larva quite small 

 when one larva of fasciatu found wild half grown and another full 

 fed. General appearance of the larva when young the same in both 

 species. Newly hatched larvae chose wild cherry out of several food 

 plants offered them and continued feeding on the same until they 

 died. At the end of May imfirovisa much brighter in color than 

 f/isciatd and of a more orange brown. The markings are distinctly 

 mustard yellowish. The central channel ends posteriorly in light 

 brown transverse marking and not in a dark one like fasciatu. Above 

 the spiracles the subdorsal area is a tawny brown. 



All the lar\'ae (5) found dead in sleeve (on growing wild 

 cherr\ ) 5lh June. They were flaccid as if killed h\ heat. The 

 largest was then 1 ' 4 inch long. 



To sum up the most striking differences, fasciata larva was full 

 grown about the second week in May, whereas improvisa would have 

 been full grown about the second week in June. Fasciata is duller than 

 improvisa and has not the distinct mustard yellowish markings along 

 the sides, nor the arrangements of shading which give the impression 

 of diamond shapes down the back. On the other hand, the markings 

 behind the head and on the anal segment are darker in fasciata than in 

 improvisa. 



Of course further experience with the early stages will be required 

 to ascertain if the differences I have noted are constant or not. and it 

 will be necessary to breed the separate forms right through, before one 

 can speak with any degree of certainty, but perhaps the foregoing may 

 be acceptable, pro tempore, as a contribution to the subject. 



I may state that my "rough and ready" and incomplete descriptions 

 of the larvae were noted for m\' own information and not with the idea 

 of publication. 



(^,1:0. O. DA^'. 

 "Sahlatston," Duncans, R. C, 14th Nov., 1911. 



