39 



from the dorsal line to outer margin of mandibles. Each seg- 

 ment, from first to eleventh, inclusive, has two rows of six tuber- 

 cles [three on each side of dorsal line, situated as before first 

 moult]. The anterior row of each segment consists of conical 

 yellow tubercles, each emitting a short black hair, while the tub- 

 ercles of the posterior row are smaller, rounded and white. The 

 protuberances on the second, third and eleventh segments are 

 entirely brown in color, and those on the second and third seg- 

 ments are three-sixteenths inch in length, but otherwise un- 

 changed. The twelfth segment is now much flattened above, tri- 

 angular in shape and studded with small white tubercles. The 

 stigmatal line, from the fourth segment to anus, is occupied by a 

 delicate black line bordered above by a narrow, and below by a 

 broad white line. Legs and prolegs green, tipped with brown. 



Larvje moulted the second time on June 8 ; one-half to five- 

 eighths inch long, nearly cylindrical, bright green. Head as large 

 as any other segment, green, sub-quadrate, bilobed, with a white 

 line running from the top of the sulcus between the lobes to the 

 outer margin of the brown mandibles, giving the casual observer 

 the impression that the head is small and triangular, with the 

 mandibles for the base of the triangle. Head covered with min- 

 ute hairs. First segment as before moulting. The protuber- 

 ances on second and third segments are one-quarter inch long, of 

 a pink color, with the branches tipped with black, and terminal 

 knob carmine-red. The tubercles on the second to eleventh seg- 

 ments, inclusive, are exactly as in first moult, except that the 

 tubercles of the anterior row of each segment, situated on and 

 just below the sub-dorsal line, are now ivory-white and, on the 

 fifth, seventh, ninth and tenth segments are prolonged and horn- 

 shaped. The protuberance on the eleventh segment is now pink, 

 with white spines tipped with black. The twelfth segment is 

 flattened above, triangular in shape, with the anal extremity 

 slightly bifid, and the sides make an acute angle with the venter, 

 the sub-stigmatal row of tubercles projecting so that the anal 

 prolegs are entirely concealed from above. The whole flattened 

 surface is studded with small green tubercles. The stigmatal line 

 is marked by a band of colors, composed of a fine red line, bor- 

 dered above by a narrow bluish line, and below by a white line, 

 below which is a bright yellow line. Legs and prolegs green, 

 tipped with brown. 



Larvae passed their third moult June 13th, three-quarters 

 to seven-eighths of an inch long, nearly cylindrical, green. Head 

 green, bilobed, minutely pubescent. Mandibles, brown, covered 

 with minute hairs. First segment at first as in last moult, but 

 towards the end of this moult it becomes very prominent and sub- 

 triangular in shape, with a yellowish-white line on each side of 

 anterior border, running from near the dorsal to the stigmatal 

 Hne. The protuberances on the second and third segments have 



