2 ON CHRYSO^ELA MARGWATA. 



side : Femur, L. 3 rnillim., E. very slightly shorter ; tibia, L. 3 millim., 

 R. 1-75 millim. ; tarsi, L. 2 millim., E. 1 millim. : the claws being ex- 

 ceedingly minute, and barely projecting beyond the last tarsal joint, all 

 of which are present and equally developed, though not attaining the 

 normal size. 



In a specimen of Lagria hirta, the dwarfing occurs in the posterior 

 pair of legs, and in this case, again, the right leg is the stunted member. 

 The measurements of this specimen are : Femur, about 2 millim. in 

 both legs; tibia, L. 2 millim., E. 1-75 millim.; tarsi, L. T50 millim. 

 (last joint wanting), E. 1 millim. 



In both cases the want of symmetry caused by the arrested growth is 

 more conspicuous than would appear from the above figures. 



Ent.M.M.xii. 3. NOTE ON CHRYSOMELA MARGINATA* 



p. 135 (1875). 



THIS species, originally found, I believe, near Pegwell Bay, near Eams- 

 gate, seems decidedly scarce on this side of the border, though not so 

 uncommon in Scotland, where it has been found by Dr. Syme in Orkney 

 (on Plantayo rnaritima), and by Mr. Champion at Braemar, by sweeping 

 alongside the Dee. Near Edinburgh it is not uncommon, though very 

 local. As far as I know, it is confined to one particular spot on Arthur's 

 Seat, a much exposed valley between the summit of the hill and a lesser 

 peak known as the Lion's Haunch, about 700 feet above the sea, where 

 the grass forms a short velvety turf, and the surface of the ground is 

 covered with scattered fragments of the neighbouring basalt rocks. 

 Beneath these fragments Chrysomela marginata is to be found, singly, or in 

 twos and threes. When disturbed, it persistently feigns death. It begins 

 to appear about the middle of June, and is most common about the first 

 week in July, when I have taken as many as thirty specimens in the 

 course of an afternoon's work, by assiduously turning over stones &c. 

 in its locality. I have never seen the larva or pupa, and do not know 

 for certain what its food-plant at Edinburgh is, as no Plantago maritima 

 grows near. The short turf of the hill is composed in great part of 

 millefoil (Achillea millefolium), and on that the beetles may feed, as some 

 I kept in captivity fed voraciously on this by night, returning to their 

 shelter at the bottom of the plants by day. I have never seen it moving 

 about in the daytime like its congeners C. mentliastri and (according to 

 Mr. Champion) cerealis, but only found it under the stones. In Wilson's 

 * Entomologia Edinensis,' the Calton Hill is also given as a locality ; but 

 I have never found it there, chiefly, no doubt, owing to my not having 

 looked there at the right time. 



* Ent. Month. Mag. xii. p. 135 (1875). 



