GRAPTA III. 
ored process, short, thick at base and top, the sides concave, ending in six equal 
spurs, one upright, the others surrounding it, each spur with a short bristle at its 
extremity; whole face much tuberculated, the sides especially being furnished 
with several long single conical light colored spurs, and many stout hairs 
(Fig. a). 
Chrysalis. — Length, .9 inch.; greatest breadth across abdomen, .26 inch.; 
across base of wings, .28 inch. Cylindrical, slender; the head-case high; com¬ 
pressed transversely, rounded ; at each vertex a stout rounded process, tapering to 
a blunt point, bent inward at two thirds its length, and at the bend on outer 
side projecting a very short conical branch; the space between these processes 
circular; mesonotum large, followed by a deep excavation, the sides somewhat 
flattened, the keel high, thin, rounded anteriorly, but at posterior end sharp and 
truncated; the wing-cases much elevated, flaring at base, the sides excavated; 
on the marginal border on ventral side a sharp conical protuberance; on the 
abdomen several rows of tubercles, most of which are small, but those of the 
two ventral rows are large, and some quite prominent; those below the mesono¬ 
tum gilded or silvered; color glossy light brown, or drab, the wing-cases clouded 
(Fig. b) b 2 ). 
Rusticus was described originally from examples sent me by Mr. Henry 
Edwards, and the localities given were Big Trees, Cal., and Vancouver’s 
Island. In 1878, Mr. Mead took the butterfly at Yo Semite, and, 16th June, 
found nine caterpillars feeding on Azalea occidentals, some of which he raised to 
the imago. From one of these larvae and a chrysalis in alcohol, and a blown 
larval skin, assisted by Mr. Mead’s written descriptions, the figures on the Plate 
have been drawn. The larva and chrysalis of this species, from drawings from 
life by Mr. Stretch, are figured in Vol. I., Plate 40, and are there erroneously at¬ 
tributed to Zepliyrus , as I learned long after publication. That larva was also 
taken at Yo Semite, on Azalea occidentals, and it produced the aberrant female 
(possibly a dimorphic form) which I described in 1874 as Silvius. These mistakes 
I am happily able to rectify, by the kindness of Mr. Mead, than whom we have 
no more accurate observer or skillful collector among our lepidopterists. 
Mr. Mead was also successful in finding and rearing many larvae of both Zepliy- 
rus and Salyrus , and states that this last species shows great variation in the 
relative extent of the light and dark markings, after the manner of the larva of 
G. Comma , with the likeness to which he was struck, and that Figure 4, Plate 40, 
Vol. I., resembles one phase of it. As stated in the accompanying notes, Mr. 
Edwards found four of these larvae on Urtica, and he wrote me that the coloration 
