1890 .] 
521 
[Packard. 
plate, with sloping sides. The surface appears as if covered with 
overlapping rings, each enclosing a circle of five, six, and some- 
times seven spines. Diameter 1^- mm. 
Larva , first stage . — Length 4 mm. Head and body pale green- 
ish-white ; head moderately large ; body covered thickly with long 
white hairs, which arise in irregular and scattering tufts from four 
dorsal and three lateral tubercles ; the hairs arising from the tho- 
racic are rather longer than those from the abdominal segments. 
Second stage . — Length 6 mm., July 16. Much as in the first 
stage, the hairs a little denser, and the head and body still whitish, 
with no dark spots. 
Third stage . — Length 11 mm., July 25. Color of the head and 
body the same, but the woolly white hairs on the thoracic segments 
appear to be thick and matted. Now appears along the back of each 
abdominal segment a conspicuous black dash, and from the eighth 
abdominal segment arises a long slender tapering black pencil 
which projects backwards. 
Fourth stage .— Length 20 mm., Aug. 3. The head is yellowish 
white, but the body slightly pale gray. From the second and third 
thoracic, and eighth abdominal segments arises a black pencil, each 
about the same length as the others , viz., about twice as long as the 
thickness of the body ; the anterior pencil points forward, the two 
others backwards. The interrupted black dorsal stripe is as be- 
fore. 
Fifth stage . — Length 27 mm., Aug. 7. This and the last stage 
(described from alcoholic specimens as well as from Mr. Bridgliam’s 
colored drawings). Head normal, rounded, the sides and top some- 
what swollen, the median suture somewhat depressed ; of a pecu- 
liar white-flesh color. Prothoracic segment without a pencil or a 
lateral black patch ; second thoracic segment with two contiguous 
rounded tubercles from which arise two long pencils whose hairs 
blend together to form a common median deep ochreous pencil in- 
clined forwards becoming black at the distal third. Third thoracic 
segment with a similar pencil inclined backwards. A similar me- 
dian pencil on the eighth abdominal segment. There is now a dorsal 
row of six long median black stripes on abdominal segments 2 to 7. 
Between these spots arise a pair of dorsal pencils composed of 
curious long spindle-shaped flexible black hairs, pale at the base, 
which taper from near the end to a sharp point. The pencils con- 
sist of three to four hairs arising from a pair of small warts one 
