PAPILIO VIII. B. 
dorsal round spots, and on either side a long oblique mark; the anal shield black; 
there is also a black stripe between each pair of segments, broadest on dorsum 
and diminishing to the middle of the side where it disappears; these are scarcely 
visible except when the larva is in motion ; there is also a line of small black 
spots along base of body, one on each segment from 2 to 6, and on 11 to 13, two 
on 7 to 10, and there is a spot over each foot and pro-leg; on each side are three 
rows of chrome-yellow spots, those of the two sub-dorsal rows being round and 
placed just within the tubercles, and on the front edges of the bands; so the 
spots of the other rows on segments three to five are on the fronts of the bands; 
but after this they divide them, the middle row being round, the lower row 
straight and oblique, filling the space between the band and triangle; feet tipped 
black; color of body bright pea-green, changing to yellow-green on the sides; 
or a creamy-white tinted dorsally with delicate green, fading into white on the 
sides; head obovate, either yellow-green or pale green, marked in front by two 
oblique black stripes which nearly meet at top ; two others on the sides, and be¬ 
tween the front and side stripes at base is a short narrow stripe ; on lower front 
face a rounded black spot; the retractile horns bright yellow. (Figs./,/ 2 .) 
Another larva at maturity was black, with white lines between the segments, 
and pale green between some of them, especially the anterior ones and the last 
two; much white along base of body. (Fig./ 3 .) 
Chrysalis. — Length 1 inch ; greatest breadth .3 inch ; cylindrical, thickest 
in middle; the surface rough, corrugated ; head-case produced, ending in two 
sub-triangular processes, the space between them concave ; mesonotum promi¬ 
nent, pointed forward, sub-pyramidal; color green, on dorsum yellowish, on ven¬ 
tral side pale ; the wing-cases dark ; on abdomen two sub-dorsal rows of small 
rounded tubercles. (Fig. g.) 
On Plate VIII. the mature larva of Brevicctuda was figured, but incorrectly in 
one particular, as afterwards discovered, the yellow spots having been omitted. 
In 1878, Mr. Couper visited Godbout, on Lower St. Lawrence, north shore, and 
paid especial attention to this butterfly and its preparatory stages, taking notes 
of each. He also preserved each larval stage in alcohol, and on his return put 
the notes and material in my hands. Later in the season he sent me two liviny 
chrysalids, from which the butterflies emerged at Coalburgh the following spring 
The chrysalis on the Plate is drawn from life ; the larvae from the alcoholic ex¬ 
amples. In these the markings are as distinct as when alive, but for the colora¬ 
tion, except when black, the notes of Mr. Couper have guided the colorist. The 
y tllow spots had completely disappeared in the alcohol. Mr. Couper wrote a& 
follows : “ This butterfly was rare at Godbout in summer of 1878, only about a 
