52 TORTRICINA. 



10. transitana, Guen. Alls anticis fuscis ; striga basi subarcuata, 

 fascia media obliqua macula que postica costali saturatioribus ; 

 posticis fuscis. tf Exp. al. 7^11 lin. 



Head and face dusky drab. Eyes intense purplish brown, with a 

 velvety appearance. Palpi longer than the head, pale dusky brown 

 above, slightly ferruginous at sides, straw-colour between. Antennae 

 dusky brown above and beneath. Thorax dull, pale, fuscous. Pa- 

 tagia dull, pale, fuscous. Anterior wings shining drab, irrorated 

 with fuscous ; the markings dull brown, and thus disposed : near 

 the base is an undulating line, much curved towards the apex ; the 

 space enclosed sometimes darker, at others the same as the ground- 

 colour. At the centre of the costa commences a well-defined inter- 

 rupted fascia, widening suddenly beyond the interruption ; before 

 the apex, upon the costa, is a semilunate spot, more or less deve- 

 loped in different specimens, and usually produced into a streak at 

 its apex, which unites with the broad part of the central fascia. The 

 basal portion of the wing thickly streaked with short, irregular 

 transverse lines, especially along the costa ; the apical portion reti- 

 culated. Marginal scales shining, but of a dull brown colour. Cilia 

 shining drab, becoming grey at the anal angle. Posterior wings 

 dull fuscous. Marginal scales fuscous, with luteous bases, especially 

 towards the apex. Cilia pale grey at the apex, becoming darker to- 

 wards the anal angle. Abdomen fuscous, palest at the base ; the 

 caudal tuft very pale fuscous, shining. Exp. al. 8-11 lin. In 

 markings the anterior wings resemble those of the <3 ; but the 

 colours are richer. 



Not an uncommon species, and varies considerably in size, in 

 the ground-colour of the anterior wings, and in the intensity of 

 the markings. Iri appearance it most resembles L. Rosana, but 

 may be distinguished therefrom by the absence of the yellow 

 colour at the tip of the posterior wings, and by the anterior 

 wings being narrower: the chief distinction is the paleness of 

 the cilia, which in L. Rosana are cinereous or fuscous. 



The imago appears in June and July, and occurs generally 

 throughout the country. 



The larva feeds on the Elm, and in the young shoots of the 

 Willow and in the catkins. 



FAMILY II. PLICATE. 



The chief characteristic of this group is the fold at the base of 

 the costa of the anterior wings in the males. The length and 

 character of this fold is various. 



The anterior wings are ample, and frequently the length ex- 



