49 
[ 309 ] 
des of the breast, the legs, and the costa, or anterior border of the wings. The ante- 
dr and middle tarsi and tfie tips of the posterior tarsi are blackish-brown. In some 
dividuals the anterior and middle tibiae, or shanks, are also blackish-brown on their 
ter face. 
This proves to be a pale, and remarkably distinct variety of a very variable species of 
oth belonging to the genus Callimorpha of Latreille. It has been described and 
imed no less than four times, by different authors, as so many distinct species, in the 
llowing order of priority: 
Callimorpha Lecontei , Boisduvol. 
C. militarise Harris. 
C. fulvicosia , Clemens. 
C. vestalis , Packard. 
The last variety appears to have been founded upon a pair of small specimens of the 
eceding one. The descriptions of the two varieties are almost precisely identical. The 
aaller size and the absence of the blackish tint on the tibiae and tarsi are insufficient 
taracters to establish a well-marked variety upon, much less a species, especially in so 
liable an insect as this. In Mr. Walsh’s, Mr. Riley’s, and my own collections are spec- 
lens varying nearly as much in size, and in which the black shade upon the legs is of 
.rious degrees of distinctness, and in several of the specimens is wholly wanting. 
The other three varieties, however, are so strongly marked, that it is not at all surpri- 
ng that they have been described as different species. Indeed they never could have 
;en suspected to be the same, were it not that intermediate grades have been discovered 
lich bridge over the space between them. The white variety above described is the 
ilvicosta. In the militaris the fore wings are bordered nearly all around with dark 
own, a band of the same across the end, and also an angular projection from a little 
:yond the middle of the costal border. In the Lecontei the brown color predominates, 
that Dr. Harris describes the fore wing of this variety as being brown, with five large 
aite spots. The hind wings are simply white in all the varieties. 
The caterpillar was first described by me and figured in the Prairie Farmer, where it 
is, by mistake, assigned to the wrong species. I now place it in its true relations, 
le following description was taken from the specimens sent by Mr. Ayers: 
Length one inch and a quarter. It may be described in general terms as a blackish, 
mewhat bristly caterpillar, with a shining black head, and with three narrow but con- 
•icuous orange stripes extending the length of the body, one dorsal and one on each 
de; and below the latter a whitish line interrupted by yellow spots. The orange 
ripes, when closely examined, are found to be made up of little elongate pieces nr- 
nged in a linear series. In the middle portion of the dorsal stripe, these pieces have 
e form of little urns with their mouths directed forward. The lateral stripes are still 
ore irregular or jagged. These stripes are not wholly orange, but interspersed, espec- 
lly the lateral ones, with white and lemon-yellow. There is also a yellow spot on the 
iter side of each of the prolegs. The broad portion between the dorsal and lateral 
ripes is velvety black, divided longitudinally into two parts by an indistinct whitish 
le with wide interruptions. The body is rather sparsely clothed with short stiff hairs 
bristles, black and white intermixed, radiating from little black warts or tubercles, 
ith steel-blue reflections, of which there are twelve on each segment, arranged as fol- 
ws: Three between the dorsal and lateral stripes, one between the first and second 
teral stripes, one below the last stripe, and one at the base of the prolegs. The under 
de of the body is sordid white sprinkled with blackish. 
Yol. 11—39 
