PAPILIO I. 



within the m.arginal ban.l of secondaries, edging posteriorly a line of blue luna- 

 tions ; the yellow ground beyond cell tinted with orange ; the sub-marginal spots 

 enlarged, and all more or less orange. 



Body above l)lack ; a yellow line passes along the thorax from head to 

 insertion of secondaries; Ix-neath. thorax yellow in front, alternately yellow and 

 black at sides in oblique bands ; abdomen yellow with one lateral and two ventral 

 black lines ; legs black ; palpi yellow ; frontal hairs short, black ; antenna; and 

 club black. 



Femai.e. — Expands about 4 inches. 



Color ochraceous-yellow. in markings similar to the male. 



Mature Larva. — Length L7 inch. Cylindrical, thickest at fifth segment, 

 tapering rapidly to the last ; head small, ob-ovate, pinkish-brown ; body apple- 

 green above, greenish-white beneath, as are the legs and pro-legs ; on the fourth 

 segment are six small, yellow spots, two dorsal in advance of the others, which 

 last are near together, one pair on either side, and ringed with black ; the fifth 

 segment edged posteriorly by a broad yellow band, which joins a black band in 

 front of sixth, the two terminating evenly half way down the sides ; fronting 

 them is a dorsal row of four small, angular, black spots ; on the eighth to elev- 

 enth segments inclusive, is a lateral row of black dots parallel to the spiracles, 

 which also are black ; retractile horns bright orange. 



The figures of larva; from which the drawings on the Plate were taken, I owe 

 to the kindness of Mr. R. H. Stretch, of San Francisco. 



Chrysalis. — Length 1.3 inch. Cylindrical, greatest diameter at seventh 

 segment, tapering slightly towards head, and rapidly towards last segment ; 

 surface rough, the abdominal segments tuberculated dorsally ; head case long, 

 corrugated, the palpi cases prominent, pyramidal ; mesonotal process similar to 

 palpi cases, lint little smaller, and the ocellar projections of same general form ; 

 color pale fawn, streaked irregularly with black and brown over entire surfoce ; 

 on either side a dark brown band along the wing cases and down the abdomen 

 to last segment ; tubercles and spiracles black. Mr. Henry Edwards, of San Fran- 

 cisco, states (Proc. Cal. Acad. Sci., 1873) that in some individuals the ground 

 color of the chrysalis is pale green. Li this respect this chrysalis resembles that 

 of PnpUio Jurniis, which is occasionally green, though the usual shade is 

 brown. Mr. Edwards gives Fraru/u7n Cdlifornica as the food-plant of the 

 catei-])illar. Dr. IJehr informs me that tlie chrysalis is often found by gardeners 

 among their plants : and it is probable tliat the species feeds upon many plants, 

 as does Ttirmis, which is to be found upon apple, thorn, cherry, ash, tulip, lurch, 

 and otliers. 



Individuals of this species vary much in the breadth of the black bands and in 



