184 THE CANADIAN ENTOMOLOGIST. 



CHRYSALIS. — Length from 1%% to rVs- inch; breadth across meso- 

 notum 1% to Tot inch j across abdomen trrV to i\ ; head case much pro- 

 duced, the sides either excavated from extreme ends of the processes, or 

 not at all. but tapering to end ; these processes conical, rather short, the 

 space between a little excavated ; mesonotum prominent, rounded, slightly 

 carinated, with a very small three-sided pyramidal process at summit ; the 

 excavation below mesonotum angular, the wing case considerably elevated, 

 the process at base sharp, triangular ; abdomen conical, marked on dorsal 

 side by three rows of tubercles, corresponding to the three uppermost 

 rows of spines in the larva ; the mid-dorsals low, rounded, the others 

 prominent on middle segments, those on mesonotum small, but all the 

 sub-dorsals are sharp and conical ; color variable ; many examples are 

 soiled white, with slight brown stripes on abdomen, one dorsal, one ven- 

 tral, one on either side, the ventral extending from head case to posterior 

 end ; the whole surface specked and finely streaked with brown ; and the 

 whole, except the last 4 or 5 segments, bronzed more or less strongly ; 

 some examples have the wing cases unicolored, others clouded in two 

 shades ; other examples are wholly light brown, and largely bronzed ; 

 others are dark brown, the whole dorsal area lighter, and mottled and 

 streaked with yellow-white ; in these last is often no bronzing except of a 

 few tubercles below mesonotum; others are blackish throughout, the 

 bronzing confined to the tubercles last spoken of Duration of this stage 

 in July 5!/^ days. Following one individual : 



Egg hatched, July 3rd. 



From hatching to pupation, 1 2 days ; to imago, 1 7 ^^ days. The last 

 imago came out on 24th July. 



Milberti does not Hve at Coalburgh, or so far as I know, to the south 

 of this ; but is a common species in certain localities throughout the 

 Northern States from New England and New York west; also in Colorado 

 9,nd Rocky Mts. northward, and in the Pacific States, and even British 



