THE FAUNA OF SCOTLAND. 39 



42. N. MELANOCEPHALUS, Htg. 



= salicis, Thorns.; nee L. 



Seemingly rare. Imaj^o in May and June. Larva in autumn. Food 

 plant — willows. 



Berwickshire (Mr James Hardy). 



Larva: head deep black, narrower than the 2d segment. Legs shining 

 green; claws a little blackish. Body bluish sea-green. On the back, 

 commencing at the 2d segment, is a row of small black dots going across, 

 and on each side of the following segraei^ts are four small dots: on the 

 edge of the back is a row of large and small black dots; below these are 

 four large square orange spots, close to the spiracles; going through these 

 orange spots is a row of black dots, two on each orange mark; immediately 

 beneath the orange marks, and touching them, is another line of larger 

 black marks; in front of the first leg is a y-shaped mark, and on each foot 

 is a black side-mark on the femur, with a larger one between; over each of 

 the abdominal legs are two black dots. In all, there are four rows of black 

 marks. 



43. N. CROCEUs, Fall. 



= fulvus, H. = trimaculatus, Voll. 



Not uncommon. Imago in May, June, July. Larva July to Septem- 

 ber. Food plant — Salix caprea, and other willows. 



Cadder Wilderness, Clober, Kintail. 



Rannoch, Aberdeenshire, Sutherlandshire (an immaculate specimen). 



The larva has the head black, the mouth paler. The three thoracic and 

 the three anal segments are reddish-orange, the rest of the body pale-green. 

 On this green part are three rows of black dots, the 1st row almost 

 continuous, the 2d more widely separated, there being only four on each 

 segment; the 3d is composed of a smaller dot in front, placed a little 

 higher up, and two long ones following each other in a line. There is also 

 a black line over the legs. These black marks are irregularly placed, and 

 much fewer on the orange-coloured segments, there being, however, a line 

 across the back, while there is a large oval mark over the anus, joined to 

 the black cerci. 



When young they are dark-green, and the markings are not distinctly 

 placed. * 



44. N. cADDERENSis, Cam.'^ 



Apparently common. Imago in June. Larva June, July, August, and 

 September. Food plants — birch and willows {iSalix cinerea). 

 Cadder, Devol's Glen (Port-Glasgow). 

 Kingussie, Rannoch. 

 Larva: head smaller than the second segment, the colour intensely 



♦ Ent. M. M. xii., p. 127. 



