LICINIA Crisia. 



Generic Character. — See PI. 15. 



Specific Character. 



A. mas. Alls anticis falcato-acuminatis,fuscis,fascidmedid margineque 



posticojiavo ; posticis infra Jlavesce7itibt(s colore griseo variis, basi 



maculis 4fulvis. 

 Fern. Alls infra albentihus colore griseo variis ; anticis integris, supra 

 fiiscis, fascid medid margineque postico albentibus ; posticarum 



basi maculis 4fulvis. 

 Male. Anterior wings angulated, brown, with a central band and 



hind margin yellow; posterior beneath yellowish marbled with 



grey, base with 4 fulvous spots. 

 Female. Anterior wings entire, above brown, with a central band and 



hind margin whitish; all the wings beneath whitish marbled 



with grey; base of the posterior with 4 fulvous spots. 

 Pieris Crisia. Godart. En. Meth. p. 197. Male. Drury, v. 3. pi. 37. 



/.I. 2? 



1 HE extraordinary difference existing between the sexes of 

 exotic Lepidoptera, and particularly among the Butterflies, 

 {Fapilionidce Lin.) is a subject which hitherto has received 

 but little attention ; nor am I aware of any entomological 

 writer who has described those characters which absolutely 

 distinguish the sexes : characters which, I am persuaded, 

 will hereafter be found of the first importance in a natural 

 arrangement of these insects. But in the prosecution of this 

 desirable object, the naturalist, as far as regards foreign 

 Lepidoptera, will have to encounter serious obstacles ; many 

 individuals must be examined of each species, and some of 

 these dissected. It falls to the lot of few to pursue their 

 inquiries in the native regions of these insects. Collections 

 in this country are very few, and some of these are not always 

 open to the scientific labourer ; neither can specimens be 

 sacrificed for dissection, where there are not more than two 

 or three individuals of a species. 



This is in general a very rare insect ; observed for the first 

 time by Dr. Langsdorff and myself early in June (the tropical 

 autumn), in a wood adjoining the Organ Mountains at Rio 

 de Janeiro. From its local abundance, we were able to 

 ascertain the sexes. The two upper figures are of the male, 

 and the lower of the female insect. 



PI. 124. 



