PAPILIO XII., XIII. 



pletely edged by a line black line, and separated by a narrow purple space ; in 

 the oval is a rounded purple spot in heavy black ring, and on the dorsal side of 

 this is a black cross bar ; within the patch are three red-brown knobs, placed as 

 in the previous stage, two of them inside the oval, the third just at the upper 

 edge of the smaller section (Fig. g^) ; in one example these knobs were observed 

 to be suppressed inside the patch (as seen in the middle figure, ^) ; in one, 

 their position was indicated by a roughening of the surface with a brown dis- 

 coloration ; there is some variation in the shape of the patches, as shown in the 

 figures ; in nearly all cases they are separated across dorsum by a space measur- 

 ing .04 inch, in one example the space was .045, in one .05 inch, but no other 

 was above .04 ; on 5 are four purple spots in cross line near the posterior edge ; 

 when the larva bends, the front of 6 is seen to be black across dorsum, and the 

 posterior edge of 5 is often more or less yellow ; on 9, 10, 11 are two sub-dorsal 

 spots to each ; 12 has two yellow sub-dorsal points, scarcely raised above the 

 surface, and on 13 is a slight cross ridge with a yellow point at each end ; head 

 shaped as before, pink, the lower face pale colored (Figs, g, rf). Duration of 

 this stage six to seven days. 



After fourth moult : length about one inch ; in four to five daj's was fully 

 grown. 



Mature Larva. — Length about two inches ; cylindrical, thickest at 4 and 5, 

 sloping on back and sides to 13 ; color of dorsum and upper part of side dark 

 green, the lower part of side pale or bluish-green ; the whole side specked with 

 lighter color than the ground in oblique streaks ; 2 has a yellow front ridge, 

 arched, the corners i-ounded ; on either side of 4 is an irregular club-shaped 

 ochre-yellow patch, usually divided near its upper end, but sometimes not fully, 

 there being then a yellow ligament binding the two parts on the anterior side; 

 the upper spot, so cut off, is either triangular or sub-rectangular, the other is ob- 

 ovate, sometimes double-convex ; each spot edged by a fine black line ; within 

 the larger, and near its outer end, is a pale blue rounded spot in a heavy black 

 ring, and above this is a black cross-bar ; these patches are separated across 

 dorsum by a space which very constantly measures .06 inch ; 5 is usually edged 

 posteriorly with yellow, but slightly, and often there is no trace of this color ; 

 on front of 6 is a black band restricted to dorsum ; on 5 are four purple dots in 

 cross-line, and on 9, 10, 11 each are four similar ones, the interior pair always a 

 little the larger ; besides these is a row of purple dots below the spiracles from 

 5 to 10, but obscure ; 12 has a pair of sub-dorsal yellow points, 13 a larger pair; 

 under side and prolegs whitish blue-green ; legs yellow ; head rounded, a little 

 broadest across lower face, depressed at top, the vertices rounded ; color pink- 

 brown (Figs, i to t''). 



