16. 



PERONEA RUFICOSTANA. 



Rufous-margined Button Moth. 



Order Lepidoptera. Fam. Tortricidae Leach. 

 Type of the Genus P. Cristahina Don. 



Pf.roxea noh. Pyralis Fab., Lat. Tortrix Huh., Ilaw., Leach. 



AntenncB inserted on the crown of the head near to the eyes, 

 rather thickest in the middle, having a serrated appearance 

 under a lens, com))ose(l of 50 joints or more^ hairy vvith a few 

 scales, first joint cylindric, second smaller, nearly globular. ( 1 .) 

 MaxiUce as long as the palpi. (3.) 



Palpi 2, completely covered (when perfect) with scales, and 

 hairy at the margins and apex (4.) ; first joint short, clavatcj se- 

 cond very long, dilated in the middle ; third joint slender, half 

 the length of last (4. a. the scales being removed to show the ar- 

 ticulations). 



Wings rounded at the base, appearing ciliated on the costa, either 



with small tufts of scales, or with one large tuft in the centre of 



the upper wing. (9.) 



Anterior legs with the first joint of the tarsus nearly as long as the tibice; 



coxa nearly as long as the femur. (8. b.) Posterior legs 5 femur 



short (8. b.), tibia long, with 2 spines in the centre and 2 at the apex 



(8. a.), all the tarsi 5-jointed. Caterpillars with \6feet? 



RuFicosTANA nob. 



Upper wings dull violaceous, yellowish white at their interior 

 margins, a mark of chesnut, darkest in the middle, extending 

 obliquely from the base nearly to the apex ; a very minute tuit 

 of bright ferruginous scales near the centre; and an interrupted 

 line of spots parallel with the posterior margin ; cilia rufous. 

 Head, palpi and thorax white. Abdomen and inferior wings fus- 

 cous. 



In the Cabinet of Mr. St07ie. 



The genus Tortrix, containing at present upwards of 250 

 British species, may with propriety be considered a family ; 

 and as it is composed of numerous natural groups, it will l3e 

 found impossible clearly to understand them unless they are 

 formed into genera: with this object in view, I have proposed 

 the ^ewns Pcronca (which is derived from the Greek, and sig- 

 nifies a button), and divided it into those with a large elevated 

 tuft of scales in the centre of the upper wings, the others 

 having small tubercles only dispersed over them. The follow- 



