56 [May 



The larva suspends itself by its terminal legs, and assumes its chry- 

 salis state twenty-four hours thereafter. The butterfly emerges after 

 twelve days. 



The chrysalis is fi-om .75 in. to .95 in. long, marked with six golden 

 dorsal spots at the bases of the anterior spines. — reticulated with grey 

 and white, and brown striped below the stigmata; head-case, with tw<» 

 lateral projections, short, conical, quite acute ; a prominent thoracic 

 spinous projection, compressed laterally, beneath which, on each side 

 is a tubercle ; two humeral projections, the anterior one, subconical, — 

 the posterior, elongated ; inferior wing-cases, with a prominence near 

 the hind margin, on the sixth segment, parallel with the posterior 

 humeral projection — the wing-case intermediately, deeply depressed ; 

 two dorsal rows of spines, from the third to the tenth segments inclu- 

 sive, short, except those of the seventh segment, which are thrice the 

 size of the others; terminal spine, long, flat, slightly curved. 



The above larval description is from ten individuals, taken on the 

 Hop, between the 10th and last of August. At the same time, one 

 was taken, difiering so much in coloration, as to deserve a separate de- 

 scription. Larva, light yellow ; above the stigmata, a black stripe, iu 

 which is the row of spines with the orange spots at their base — the 

 stripe in its breadth reaching nearly up to the subdorsal row of spines, 

 and sending off", on each segment, the double curved line above de- 

 scribed ; the short vascular line is also black ; the lateral row of oi'ange 

 spots has one spot on the 5th segment, making their number seven, — 

 those from the 6th to the 11th inclusive, are double, the additional 

 spot being behind the spine, lower on the body than the other, and of 

 smaller size. Head, shining black, with stiff" hairs and two branching 

 spines, whitish. Body beneath, blackish. Spines, except of the substig- 

 matal row. cream-color, with black tipped whitish branches ; trunk of 

 the two lateral spines of the 2nd segment, black. On the three ante- 

 rior segments, a whitish median line. Stigmata black. Legs red. 



The butterfly obtained from the above larva does not diiFer materi- 

 ally from other specimens of comma in my possession. These are the 

 principal variations noticed : the large black spot resting on the ante- 

 rior margin of each wing, is larger ; the two black spots situated be- 

 tween the nervules of the sub-mediaa of the primaries, are smaller — 



