—Z00— 
Preparatory Stages of Callosamia angulifera, Wa/s. 
By Wa. BEUTENMUELLER. 
Egg—Ovoid, flattened above and below, white, shiny. Length 2 
mm. width 1 mm. Laid July 2. Emerged July ruth. 
Foung Larva.—Head dull black with a transverse white band a 
little before the middle. Labrum also white. Cervical shield black. 
.Body above and below wholly yellow, as are also the tubercles. As the 
larva grows older a pale blackish transverse band begins to appear on the 
junction of each segment. Length 3 mm. Daration of this stage six 
days. 
After first moull,—Same as the preceeding stage, except the band 
on the first segment deep black, and the lateral row of tubercles above 
the spiracles sometimes black. Length 6mm. Duration of this stage 
seven days. 
After second moult.—The head is now pale green with two black 
transverse bands and the body pale whitish green with the dorsal tuber- 
celes and the ones below the spiracles yellow. The tubercles above the 
spiracles black. The four ttfbercles on the second and third segments 
pale orange and much larger than the rest. The transverse band on the © 
segments are now scarcely visible, except along the dorsum they are deep 
black. Underside semitranslucent, whitish, Length 14 mm. Dura- 
tion of this stage four days. 
After third moult.—Vhe tubercles on the second and third seg- 
ments are now coral red and the one on the eleventh segment yellow. 
All the remaining tubercles are reduced to piliferous spots. Length 22 
mm. Duration of this stage seven days. 
After fourth moult.—Little difference from the preceeding moult 
except that the tubercles are a little more prominent and having along 
the sides below spiracles a pale yellow stripe beginning at the third seg- 
ment and running to the posterior extremity of the body. 
Length 35 mm. Duration of this stage five days. 
Afler fifth, the last moult.—No difference from the preceeding moult. 
Length 60 mm. Duration of this stage six days. 
Food Plants. Tulip-Tree, (Liriodendron tulipifera.) Wild Cherry 
(Prunus serotina) and Sassafras (S. officinale. ) 
This larva closely resembles that of Ca/losamia promethea. But 
may be readily distinguished by the yellow lateral stripe and the less 
prominent tubercles on the second and third segments and also by the 
smaller piliferous spots which in some individuals are quite obsolete. 
The larva is also much stouter and larger than promethea. 
The cocoon can only be separated from P. promethea by its larger 
size. Length 43 mm, width 20 mm. 
