Packard.] 
536 
[Feb. 19, 
( Coelodasys biguttata Pack.) of the normal form mated with a male 
of the variety C. cinereofrons Pack. Miss Morton informed me that a 
male of the normal C. biguttata was also attracted. The eggs were 
laid July 11 and hatched July 17; the first moult occurred July 
19-24 ; the second on August 1-2 ; the third Aug. 6-7 ; the fourth 
August 16-18 ; the date of the last moult not noted, but about four 
or five days later. 
Egg. — 1 mm. in diameter. Perfectly hemispherical in shape, with 
the surface marked on the sides and near the base with minute po- 
lygonal areas which toward the top become gradually smaller, 
with minute beads at the angles ; the top of the egg is smooth. 
First stage; larva just hatched. — Length 2-3 mm. It shows 
an approach to the characters of the fully-fed larva in the uplifted 
small anal legs, and the tubercles on the segments, though those 
characteristic of the last stage are not specialized. 
The head is enormous in proportion to the size and width of the 
body, being twice as wide as the thoracic segments; it is well 
rounded, rather short antero-posteriorly ; full and rounded on the 
vertex, rounded not angulated above, and in color dark amber. 
The prothoracic segment is wider than the succeeding ones, with 
two very large dorsal piliferous tubercles, situated far apart, while 
those on the meso- and metathoracic segments are minute and sit- 
uated not so near together as those on the abdominal segments. 
The tubercles on the first, third, eighth and ninth abdominal segments 
are larger than those on the other segments. They are all darker 
than the body, and dull amber-brown in color. 
The body in general is greenish-yellow, with a pale reddish band 
around the prothoracic segment, and around the first, third, and 
eighth abdominal segments. The hairs are in most cases about twice 
as long as the body is thick. On the head are a few scattered sim- 
ple hairs pointed at the end. Those on the segments behind the 
head are in general clavate at the tip. Those of the two large pro- 
thoracic tubercles and of the larger warts on the eighth and ninth 
abdominal segments are nearly twice as long as most of the others, 
and are slightly bulbous at tip. Those on the meso- and metatho- 
racic segments are about a fourth longer than most of those on the 
succeeding segment to the eighth abdominal. 
The larva just before the first moult is nearly twice as large as 
when first hatched, but it can be easily distinguished by its hairs 
alone, from those in the second stage. 
The thoracic legs are black, the abdominal, including the anal 
