1914.] 23 



Freyer, Neuere Beitr (1836), Argyrognomon, 169 (on Tetrayonolobus 



siliquosus. 

 Hofman, Spuler, Lang, Dubois, &c, all appear to be, like Duponchel, copies 



from Hubner directly or indirectly ; Scriba's, Hiibner's, and Freyer's 



are the only original drawings I have found. 



I refer later to an error in the drawings on Plate I. 



The larvae of A. damon were found on June 23rd and later dates, 

 most freely in a somewhat shaded field of wild herbage, of which 

 sainfoin was a large part. The field had probably been sown with 

 sainfoin some years before and was gradually returning to an un- 

 cultivated state. 



One or two larvae were picked up, but most were obtained by 

 sweeping ; the largest number were taken one evening by Mr. Champion 

 in this way, though several rewarded sweeping at midday. It seemed, 

 however, obvious that they came up to the flowering stems to feed in 

 the evening, and that the majority, but not all, spent the day some- 

 where lower down. 



The larva is 13-15 mm. long (PI. I, figs. 5, 7, 8, 9, magnified nearly x 3), 

 rather flat, green, with a very silky aspect from the white hairs that are 

 especially long on the dorsal and lateral flanges. These flanges are rather 

 pronounced, the " slopes " being almost concave, and the dorsal line is in a 

 trough. Seen dorsally (figs. 5 and 8) the dorsal line is a very dark green ; the 

 dorsal flanges are very pale green, rather darker on outer margin, merging in 

 faintly indicated darker and lighter oblique lines on the " slope." The lateral 

 flange is very pale, especially posteriorly, with a reddish line sunk in it. Seen 

 laterally (figs. 7 and 9), there is a trace of yellow line in the dorsal flange and 

 the lateral flange encloses a coloured band, reddish above, whitish-yellow below, 

 but these colours being sunk well beneath the surface, change positions 

 according to angle of view. 



The slope is set with very short silky hairs, that seem to be ranged round 

 two central points, one above the other on each segment (" upholstered " 

 hollows). The honey gland is a slightly darker line in some specimens, hardly 

 visible in others. The position of fans on 8th abdominal segment is usually 

 very obvious. 



As the larva gets older (preparing for pupation), the hairs of the dorsal 

 flanges become slightly reddish instead of white, and in some specimens the 

 paler lines on the slope become distinct, they are four on each segment, down- 

 wards and backwards, the upper almost in dorsal flange, two right across 

 segment and the lowest has room only in front-half of segment. The lines and 

 spaces between them are about equal in width. Many specimens are uniform 

 green, showing no traces of these lines, and are even without the lateral line. 

 Those with the lateral line most distinctly seen, show it best when seen so as 

 to place the white line above the red, both look very deeply sunk, as is 

 frequently the case with the colours of Lycamid larvae. 



