122 
A. W. LINDSEY 
It is unfortunate that so little material could be preserved 
for this study, but the complete series of head capsules, the setal 
map of an abdominal segment of the first instar (fig. 4), 
sketched in the field, and the maps made from the preserved body 
in the fifth instar, show some interesting and suggestive things 
with regard to the possible basis of classification of skipper larvae. 
It is obvious from the notes recorded that (1) a reduction of 
primary setae occurs during the first ecdysis, both on head and 
body, and that (2) it is accompanied by an assumption of a 
prominent vestiture of secondary setae. The secondary setae 
of the body have been apparently glandular or sensory in all 
species observed by the writer. Since the change in vestiture 
after the first instar agrees with the writer’s memory of findings 
published by Dyar in a paper at present unavailable, it is prob- 
ably a factor which must be contended with in the entire super- 
family, with the possible exception of the Megathymidae and 
Euschemonidae. The possible persistence of primary setae or 
tubercles has been pointed out by Tracker, ^ but without any 
attempt to interpret specific cases. This attempt is made here, 
although it must necessarily be supported by other observations 
before it can be more than a suggestion. 
The following paragraphs on the egg and larval stages give 
the writer’s field notes, supplemented by measurements of the 
head capsules. These are followed by a brief discussion of the 
chaetotaxy of the larva, based, with the exception of the first 
instar, upon the preserved fifth stage larva and the head capsules. 
Egg: Deposited June 29, about 2:00 p.m., in a damp sunny 
place close by the edge of a small irrigation ditch, where the 
humidity must have been much higher than in the localities 
frequented by the adults. The egg was circular, its flattened 
base about 1 mm. in diameter. Its height was about 0.75 mm., 
the sides rounding up to a flattened micropylar area about 0.4 
mm. in diameter. Shell white with a yellowish tinge due to the 
contents. Surface covered with a fine reticulation of raised 
lines, plainly visible under an eighteen diameter hand lens, 
though not at all prominent. On July 7 the micropylar area 
Op. cit., p. 127. 
