THE CANADIAN ENTOMOLOGIST. 83 



I 



is a yellow row, and a yellow and wavy one runs along the ridge, at base ; 

 these two side bands unite at 4 or 3 and go to head as one broad band. 



Six days after 4th moult the larva reached maturity, and two days later 

 suspended. 



Mature Larva. — Length 1.2 ^, 1.4 $; greatest breadth .18 ^,.2 

 $ ; body sub-cylindrical, obese, in some cases almost same thickness from 

 2 to 8, then tapering rapidly to end, in others the middle segment is 

 thickest and the taper is regular either way, 2 being of equal diameter 

 with 12; the dorsum well rounded, the sides much less convex, rather 

 flattened, and sloping to a broad base ; the last segment ending in a forked 

 tail ; banded with tubercles as immediately after the moult, but these have 

 constantly diminished in size as the larva progressed, and in no place are 

 so distinct, and many have disappeared altogether ; general color either 

 bright yellow or ochre yellow, a little whitened along the edges of dorsal 

 area ; the medio-dorsal stripe is very narrow and either black or deep 

 blue, but greenish on two or three anterior segments ; the two side stripes 

 are dull or sordid green, as is also the under side ; feet and legs same ; 

 head .06 inch broad, .07 high, sub-quadrate, the sides rounded, the front 

 moderately rounded, the top depressed at a slight angle ; on each vertex 

 a short, stout stag-horn process, with two equal prongs at top, one in front 

 at base, another near the base on the front inner side, making four prongs 

 which are of same shape, tapering to a blunt rounded top, and these and 

 the entire front and sides of the process are black ; the back is green, and 

 upon it and at the sides below are four green similar prongs ; along the 

 back of head, at top and down the sides are several greenish-white slender 

 spurs, the up[)er ones long, those on sides diminishing in length as they 

 descend, and bent down ; on the front four small knobs, two below horns 

 towards the suture, two at side ; the back of head green, the rest green- 

 ish-white and black, and thickly covered with a fine yellow down ; the 

 processes and spurs much covered with quite long white hairs ; the entire 

 surface of head shallowly pitted ; in nearly all cases the pattern of face is 

 as in the preceding stages, the top being black, and projecting over front 

 and sides black sub-triangular or long patches ; and also a black triangle 

 resting on the black patch which covers the mandibles ; the white area 

 being restricted to four vertical stripes, two of them incurved on middle 

 front, making the letter H, the uprights reaching from vertices to ends of 

 mandibles, a narrow space between the two front triangles making a cross 



