192 THE CANADIAN ENTOMOLOGIST. 



pressed in the middle, broad at the top, crowned by five equal, blunt-tipped 

 spines around a sixth in the middle ; each with hair ; these processes are 

 black in the black larvae, and in the light ones either red or red with black 

 tops ; face and whole head thickly covered with simple white spines of 

 variable length, all white, except that sometimes there are one or two 

 of the longer ones on side face below the vertex which are black, or black 

 and white ; along back of head and down the sides is a row of these 

 spines close set. From 4th moult to pupation 5 days. 



Chrysalis. — Length .8 to .9 inch ; greatest breadth .24 to .26 inch ; 

 cylindrical ; head case high, compressed transversely ; at each vertex a 

 long, conical process • the mesonotum elevated, the carina very prominent, 

 thin, nose-like, followed by a deep excavation ; wing cases raised, flaring 

 at base, compressed in middle, with a point on the margin ; on the abdo- 

 men three rows of tubercles, those corresponding to the dorsal row of the 

 larva small, to the first laterals large and conical, the pair in middle of the 

 series particularly prominent, and those in the excavation silvered, gilded 

 or bronzed, varying ; color variable, many examples being dark brown, 

 with lighter or with yellow-brown, and much reticulated with dark lines ; 

 others are dead-leaf brown ; others are light, up to dead-white shaded 

 slightly with yellow-brown, with a bronze lustre over the wing cases and 

 anterior dorsal parts. Duration of this stage about 7 days. 



Grapta Comma is found abundantly in New England and thence 

 through the Northern States to Nebraska ; also through Canada and in 

 Nova Scotia ; and to the South, at least as far as the Kanawha district of 

 West Virginia. In the Northern States the species is two-brooded, in 

 Kanawha three-brooded. It is seasonally dimorphic, the winter form 

 being Harrisii (i. e., the form described by Dr. Harris), the summer form 

 Dryas, Edw. Both these are figured in Butterflies of N. A., Vol. I. Where 

 there are three broods, the middle one is made up of the two forms. 

 Eggs laid by the hybernating females {form Harrisii) in April or May, 

 give Dryas in May or June, and this is the first brood of the year. Eggs 

 laid in July by Dryas give both forms in August — the second brood ; and 

 eggs laid in September by either form give Harrisii in October. The first 

 eggs are laid in April or May, according to the forwardness of the season. 

 In 1882, I obtained eggs (rom Harrisii, tied in bag over a hop spray, 14th 

 April, and from 22nd to 25th May, had therefrom 35 Dryas, 17 ^,18 $. 

 In 1874, the first eggs were obtained loth May, and the result up to 27th 



