TORTRICINA. 



165 



From the very wide range of variation to which several of the 

 species of this genus are subject, the arrangement of their se- 

 quence in a tabulated form is by no means easy. The following 

 appears to us as the best : 



A. Anterior wings with a triangular mark at the middle 



of the costa Species 1-5 



B. Anterior wings with the markings disposed in spots 



and fascice Species 6-8 



C. Anterior wings brown, with a darker diagonal streak 



from the base to the apex Species 9 



D. Anterior wings with a white vitta along the dorsal 

 margin, and a large central tuft of elevated scales . Species 10 



E. Anterior wings with the basal half pale and the 

 apical half dark. 



a. With the base primrose colour Species 11 



b. With the base whitish or straw colour .... Species 12 



1. Schalleriana, Linn. Alis anticis griseis; macula trigona medio 

 costa3 ferraginea ; punctis elevatis atomisque nigris apicem versus 

 sparsis ; striga abbreviata ad marginem dorsalem ferruginea ; 

 posticis fusco griseis. <$ Exp. al. 7-8 lin. 



Head and face dull fuscous. Eyes black. Palpi above and at the 

 sides fuscous, pale drab between and beneath. Antennae fuscous, 

 with the basal joint pale beneath. Thorax smooth fuscous, slightly 

 shining. Patagia same colour as the thorax. Anterior wings shining 

 grey, with an ochreous tinge ; on the costal margin is a large tri- 

 angular truncate patch, of a deep brick-red colour, enclosing a paler 

 space on the costa, and edged with white within ; at the truncate 

 apex of this patch is a small pale ferruginous cloud, bearing one, 

 sometimes two, minute brown tufts of elevated scales. On the 

 dorsal margin near the base is a short pale ferruginous streak, at the 

 apex of which is another tuft of brown and black scales, with two 

 smaller ones adjacent. The apical portion of the wing marked with 

 irregular lines of dark dots, those on the margin most distinct ; the 

 costal and dorsal margins speckled with whitish and grey. Apical 

 scales slightly ochreous, with grey bases. Cilia concolorous, or rather 

 paler, merging into iron-grey beyond the anal angle. Posterior 

 wings clothed with pale fuscous scales, darkest at the apex, on a 

 pearly ground. Marginal scales fuscous, with luteous bases. Cilia 

 shining, with a very pale fuscous tinge. Abdomen pale fuscous, 

 with a shining caudal tuft at the apex. $ Exp. al. 8 lin. 



This beautiful species is tolerably constant in its colours, but 

 varies considerably as to size; in general appearance it much 

 resembles P. cornparana, and is often confounded with it ; but it 

 is easily distinguishable therefrom by the anterior white edging 



