Entomological Botany. 4507 



on the slippery sides of Arthur's Seat. In April and July its leaves 

 are mined by the reddish larva of Laverna Staintoni ; in May the 

 terminal joint is screwed up by the larva of Gelechia sequax. In 

 June the leaves are mined by a Coleopterous larva, with the name of 

 which I am unacquainted. 



Helianthemum polifolium. White Mountain Sun-Cistus. 



Near Torquay I have observed this plant, which, except in the 

 white flowers, much resembles the preceding, but I was not so fortu- 

 nate as to detect any larvae on it. My stay there was limited to a few 

 hours : perhaps some entomologist may make a longer sojourn there, 

 and be more successful. 



Viola odorata. Sweet Violet. 

 Viola canina. Dog Violet. 



These are the principal food of several of our fritillaries, — Argynnis 

 Paphia, Aglaia, Selene and Euphrosyne, and also the still-doubted- 

 as-British Dia. 



Viola tricolor. Heart's-ease. 



Speyer gives this as the principal food-plant of Argynnis Lathonia, 

 one of our rarest and one of our most elegant British butterflies, and 

 he also cites Spaelotis praecox as feeding on it : this larva, according 

 to Roesel, who figures it (vol. i. pi. 51), feeds in May. Of the larva of 

 Rusina tenebrosa, Guenee remarks that it feeds on the low plants which 

 remain green during the "winter, and especially on the species of 

 Viola." 



Polygala vulgaris. Common Milkwort. 



This little plant, with its flowers of blue, pink or white, so common 

 on dry pastures, is still unknown to us as the food-plant of any Lepi- 

 dopterous insect; yet I cannot but think that this arises from our 

 overlooking the plant on account of its insignificance. 



Tamarix anglica. Tamarisk. 



Common in many parts of the Southern coast, but not at present 

 observed as harbouring any Lepidopterous larvae. Gelechia Tamari- 

 ciella, found by Heir Mann near Leghorn, and Agdistes Tamaricis, 

 taken near Strasburg, both derive their names from this genus of 

 plants, but whether appropriately so or not future observations must 

 show. 



