222 BRITISH ORTHOPTERA. 



t lie costal margin unarched at the base ; region between 

 radius and cubitus containing some white spots. Wings 

 smoky at the apex. Hind femora variegated. 



FEMALE IMAGO (PL XXIII, fig. 3).- -Colour in general 

 like that of the male. A larger insect, its length beino- 



O o & 



some 15-16 mm. Elytra reaching the tip of the 

 abdomen. Antennae shorter than in the male, and 

 almost imperceptibly clubbed. Valves of the ovipositor 

 short. 



VARIATION.- -These grasshoppers display an almost 

 endless range of colour- variation. Some are richly 

 spotted with cream, green, red, and various shades of 

 brown. Some again are nearly black. Others, when 

 the elytra are closed, have a conspicuous pale stripe 

 along the back. At Trebarwith in Cornwall, Bracken 

 found them almost without exception various shades of 

 brown, but at Ugborough and Lee Woods in Devon 

 they were nearly all black. They were dark generally 

 on the S. Devon moorland margin, while those met 

 with near the sea were pale. On dark soil in the New 

 Forest, not yet covered with vegetation after a fire, 

 one or two very dark specimens were noticed, while 

 bright colours appeared to be absent ; amongst heather 

 on the other hand they are sometimes very prettily 

 marked with crimson and green. Evans found them 

 almost black where heather had been burnt in Dum- 

 bartonshire. High on the screes of limestone rock in 

 Dovedale, Jourdain noticed that they harmonised 

 wonderfully with their surroundings. In fact, however 

 brought about, assimilation to the environment is 

 undoubtedly the result of the great range of colouring. 



DATE. --(jr. macidatus has a longer life as an imago 

 than most of our Acridian grasshoppers, in that it 

 may usually be found mature in the latter half of June. 

 July, August, and September are the best months for 

 it ; but it lives on into October, the latest date I have 

 being 26 October in 1918. 



HABITS, ETC.- -Heaths, moors, and downs, especially 



