PAPILIOXINAE : PAPILIO POI.YXENES. 1357 



spot!< upon the upper surface of botli wiufjs luul aluiost entirely disappeared, witli 

 the exception of the uppermost and Uiwerruost spots of tlio hind wings. Sindlar dif- 

 ferences occured l)eneatli and even the lilue niarliinfjs of the under surface were ij;reatly 

 restricted. 



In the same collection 1 saw a uuile bred in tlie Catslvills in whicli tlie clasps were 

 entirely al)orted, althoutrh all the other parts were perfect. 



Secondary sexual distinctions. Besides the differences in the distribution of the 

 marliinjrs of the wings, detailed in the description above, see the generic description 

 for dill'erences in the neuralion ^61: 15, Ki). 



Egg. (66:2). Surface sliirlilly glistening, covered witli tlie most excessively fine 

 graindations. wtiich about the micropyle are rudely and very obscurely arranged in 

 irregular polygonal cells about .Uli.") mm. in diameter ; the micropyle canals are two tubes 

 .02;i mm. long, on either side of the pole of the egg, inclined toward each other, and 

 .05 mm. apart. When first laid, the interior of the egg appears to be lllled witli 

 darli globular cells about .0125 mm. in diameter and separated by pale interspaces. 

 The color of the egg is at first a pale honey yellow, afterwards changing in parts to 

 reddish Drown. Height, 1 mm. ; breadth, 1.05 mm. ; sometimes a little larger. 



CateripUar. First stage (72; 11). Head (79 : 50) shining Ijlack. Body blackish 

 brown, excepting a transverse yellow spot on the first thoracic segment between the 

 later.al tubercles ; also the greater part of the dorsum of the fourth and a portion 

 of th.at of the third abdominal segments are whitish and there are sometimes oc- 

 casional white spots on the segments anterior to them. The tubercles of tlie lateral 

 and infrastigmatal series are dull orange, those of the lateral row on the third and 

 fourth abdominal segments partaking of the color of these segments ; their warts and 

 all the other warts of the body as well as all the bristles and hairs, black. When just out 

 of the egg, length, 2.4 mm. ; when fully grown, length, 8 mm. ; breadth anteriorly, 2.6 

 mm. ; posteriorly, 1.75 mm ; width of head, .78 mra. 



Second stage (76: 17). Head (79: 57) very pale yellow with a white streak down 

 the middle of either half and enclosing the ocellar area which is orange; ocelli black. 

 These at least are the colors when it first moults, but the liead afterwards becomes wholly 

 black. Body black excepting upon the dorsal surface of the third and fourth abdominal 

 segments, which are white; excepting on tliese segments, where they partake of the color 

 of the body, the tubercles are all orange with black spines, the central spine being 

 longer than the others which form a corona around it. Length, 3.75 mm. 



TTiird stage. Head (79 : 58) mostly black, but with a white triangular spot in 

 front, of about the size of the frontal triangle and partly superimposed upon it, 

 its base being aljont half way up the latter; beside it are two similar ones of equal 

 size, one upon either side. Body mostly jet black ; delicate, transverse, white lines 

 occur on the greater portion of the dorsal and most of the lateral region of the third 

 and fourth abdominal segments and sometimes at either extremity of all the segments ; 

 a stigmatal row of bright lemon yellow spots, one to each segment, the base of all the 

 tubercles bright lemon yellow. Length, 15 mm. 



Fourth stage (76 : 24). Head (79 : 59) greenish white with two broad, black stripes 

 down either side of the front, most of the hinder edge and the triangle black. Body 

 faint greenish white marked with black in a manner to be described in the succeeding 

 stage, but with proportionally rather broader belts and with insignificant irregularities 

 of the border ; in the place to be hereafter occupied by the hollowings of the margin 

 of the belt are here found longitudinal laterodorsal and lateral rows of thorny tubercles, 

 which are small, conical and black, bearing short needle-like spines ; the former row 

 becomes subdorsal on the thoracic segments, those of the first segment being situated 

 directly behind the osmaterial orifice, while the lateral row becomes supralateral, oc- 

 curring just at the extremity of the same orifice and a little in advance of the subdorsal 

 pair; on the under side of the body inky black predominates ; osmaterium pale orange 

 at base, the forks pellucid. Length, .25 ram. ; breadth. 5 ram. ; length of osinateria, 5.5 

 mm. 



Last stage (76: 27). Head (79: 60) green with two broad stripes of black, one 



