THE AMERICAN ENTOMOLOGIST. 



77 



Boisd.) Mr. S. H. Scudder, from an examina- 

 tion of a large number of specimens, found that 



[Fig. 33] 



I „lui-._]!U,.'kan.l«liitf 



this butterfly enjoys a wide geographical ranfjc, 

 " extending from Texas on the southwest, Mis- 

 souri on the west, and the mouth of the Red 

 River of the North on the nortliwest, as far as 

 Connecticut, and the Southern Atlantic States 

 on the east."* But while the species is scarce 

 in the more northern States, it abounds in many 

 of the southern States, where it takes the place 

 of the species described in the above paper. It 

 often proves exceedingly injurious, and we 

 learn from one of our Mississippi exchanges 

 that " there were last year thousands of dollars' 

 worth of cabbages devastated and ruined by 

 worms in the neighborhood of Corinth." We 

 are furthermore told, that cabbages could not, 

 in consequence, be had there even at ten cents 

 per head. The ' ' worm " referred to, was doubt- 

 less the species under consideration. It abounds 

 in many parts of Missouri, and especially in the 

 truck gardens around large cities, where it 

 proves quite destructive to the cabbages. 



[Fig. 54.] 



The larva (Fig. 54 a), may be summarily de- 

 scribed as a soft worm, of a greenish-blue color, 

 with four longitudinal yellow stripes, and cov- 

 ered with black dots. t When newly hatched it 



•SeeProc, Bost. Soc. Nat Hist., YIK, Isci, p, ISI. 



t We annex .a full description of this hir\;ifir tli'- b.u.iit 

 of our scientific friends: Averaj^e lL-ni,^ih wIh-ii Jull i^imwu 

 1.15 inches. Cylindrical. Middle su-jmiit- larg.st . .M..M 

 common ground-color green verging mitn liUie: s.nnc-tiiiu-s 

 Clear pale-blueand at others deep indigo or purplish-ljlue. 

 Each segment with six transverse wrinkles, of which the 

 first and fourth are somewhat wider than the others. Four 



is of a uniform orange color with a black head, 

 but it becomes dull brown before the first moult, 

 though the longitudinal stripes and black spots 

 are only visible after said moult has taken place. 

 The chrysalis (Fig. 54 b), averages 0.65 inch 

 in length, and is as variable in depth of ground- 

 color, as the larva. The general color is light 

 blui'sh-gray, more or less iiiten,sely speckled 

 with black, with the ridges and prominences 

 edged with buff or with flesh-color, and having 

 larger black dots. 



[Fig .-„',.] 



(. olors— Black and «hite 



The female butterfly (Fig. 53), as was stated 

 in our last number, (p. 60) differs remarkably 

 Irom the male which we represent at Figure 55. 

 It will be seen, upon comparing these figures 

 that the ? is altogether darker than the ,^ . 

 This sexual diflfereiice in appearance is purely 

 I'olorational, however, and there should not be 

 the diflerence in the form of the wings which 

 the two tigures would indicate, for the hind 

 wings in our c? cut, are altogether too short 

 and rounded. 



This insect may be found in all its difierent 

 stages through the months of July, August and 

 September. It hybernates in the chrysalis 

 state. We do not know that it feeds on any- 

 thing but Cabbage, but we once found a ^ 

 chrysalis fastened to a stalk of the common net- 

 tle, (Solarium caroUnense) which was growing 

 in a cemetery with no cabbages within at least 

 a quarter of a mile. Before concluding this ar- 

 ticle, M'e cannot too strongly urge upon our west- 

 ern readers to do all in their power to prevent 

 the advent of the Rajjc Butterfly in their midst. 

 It is more to be dreaded than any of the others, 

 and by stringent measures may easily be pre- 

 vented from gaining a foot-hold in any locality. 

 Be on your guai-d! — Ed.] 



longitudinal yellow lines, each equidistant from the other, 

 and each interrupted by a pale blue sjjot on the aforemen- 



— i|uite variable. The black piliterous spots freijuentlv have 

 a i)ale blue annulation around the base, especially 'in the 

 darker specimens. 



