126 THE ENTOMOLOGIST. 



ab. undulana, Hlibner. 



Syyionymy. — Undidana, Hiibner, Tort. pi. ii, fig. 7 (1797) ; Curtis, 

 Brit. Ent. 29, No. 4, undnlanus, 1824; Curtis, Guide, p. 174, undii- 

 lanus (1829) ; Treitske, Schmett. von Eur. viii, p. 22 (1830) ; Stephens, 

 Haust. iv, p. 146, nndulanus, 1834 ; Staudinger, Cat. Lep. Eur. p. 50 

 (1871) ; Lampa, Tidskr. vi, p. 81 (1885). 



Description. — This aberration is figured by Hiibner. There 

 is no description in his book, but I have made one from his 

 figure as follows : 



The ground-colour of the front wings is fuscous, with a number 

 of dark fuscous, waved transverse lines. The discal spot is reddish- 

 brown. The thorax is of the same colour as the front wings, the 

 palpi are lighter ; the hind wings are light fuscous, shaded on 

 the outer margin with darker fuscous. 



A very good character of this aberration is the reddish-brown 

 discal spot. It is not so shown in all of the copies of Hiibner's 

 work, which was coloured by hand, but it is in some of them, 

 and as specimens with this spot reddish-brown are common, 

 it is clear that the type of undidaua should have it. 



ab. alhimaculata , n. ab. (PI. I, fig. 17.) 



Description. — Similar to ab. undidana, but the discal spot, 

 which is so important in the diagnosis of that form, and which 

 in it is reddish-brown, is in ab. alhimaculata light grey. The 

 ground-colour of the superiors, being lighter than in ab. undtdana, 

 shows up the dark transverse lines and gives this form a more 

 variegated appearance than the other. 



I have a long aeries of this form from the New Forest, where 

 it is common. It or the next have often been described by writers 

 as the type form of revayana. 



ab. plumhea, n. ab. (PI. I, fig. 18.) 



Description. — ab. jj/MW&<?rt has the ground-colour of the 

 superiors a light plumbeous colour, with the usual darker trans- 

 verse lines faintly indicated. 



My series of about a dozen examples was taken in the New 

 Forest, where it is not uncommon. I have not seen it from 

 elsewhere. 



ab. melanosticta, n. ab. (PI. I, fig. 19.) 



Description. — Similar in all respects to the last, but with 

 a large and prominent central black spot to the superiors. 



This is apparently not an abundant form. I have two 

 examples from the New Forest, and have seen others. 



ab. nigricans, n. ab. (PI. I, fig. 20.) 

 Description. — Superiors dark fuscous, with the usual markings 



