STATJROPUS FAGI. 



63 



StAUROPTJS FAGI. 



Plate XXXIII, fig. 1. 



On the 25th of October, 1876, I received from the 

 Rev. Bernard Smith a very dark, quite melanic, larva of 

 this species ; it measured in length two inches and 

 seven-eighths when the hinder segments were not ele- 

 vated (which was very seldom the case), but when 

 closely brought together with the tail elevated it only 

 measured from one and a quarter to one and a half 

 inches. 



The head was narrow at the crown of the lobes 

 which were slightly divided, increasing in width to 

 near the mouth, which was well developed and also 

 the antennal papillae. The second segment was much 

 smaller and the crown of the head projected over it 

 considerably, the third and fourth segments increasing 

 a little in size and having the usual two transverse 

 wrinkles, subdividing each into three portions. At the 

 base of each of these three segments the anterior legs 

 were inserted in stout, short socket-joints, the front 

 pair much shorter than the others, consisting of femur, 

 tibia and tarsus, which were jointed so as to move in 

 an inward horizontal curve, useful in keeping steady 

 the leaf on which the larva may be feeding, the tarsus 

 furnished with a small hook at its tapering extremity ; 

 the second and third pair of legs very much longer, 

 the femur slightly curved, slender, but enlarged at the 

 insertion of the tibia. When at rest this joint was ele- 

 vated much above the height of the thoracic segments, 

 the tibia, about equal in length to the femur and bent 

 downwards from the joint, was still more slender, but 

 swelling out a little at the insertion of the tarsus, which 

 was a very short joint tapering and at the tip ending in 

 a hook ; the surface was shining and rather pubescent. 

 These legs worked laterally outwards and inwards, 

 as well as forwards ; when extended outwards of course 

 the knee-joint was lowered, but when drawn towards 



