CICADID^E. 277 



latter broad and transverse, never produced in front, 

 with three ocelli on the crown, (PL XVIII. fig. 2, ,) 

 the hind legs are thickened and adapted for leaping, 

 and all the tarsi are three-jointed ; females with an 

 ovipositor ; males musical. 



The first example of this fine genus, figured for 

 the first time, is named 



CICADA (POLYNEURA) DUCALIS. 

 PLATE XVIII. Fig. 1. 



THE head is black, with two minute buff-coloured 

 spots over the insertion of the antennae. The thorax 

 is considerably broader than the head, and angulated 

 on each side, near the middle, the colour black, with 

 a narrow anterior and broad posterior margin of yel- 

 low. The remainder of the body is black, except 

 the posterior margin of the basal segments of the 

 abdomen, which are chestnut in the centre. The legs 

 are black, with the thighs, except at the tip, scar- 

 let. The general colour of the anterior wings is 

 chocolate brown, darkest at the base, the anterior 

 costa at the base, and the veins, of a rich golden 

 yellow ; the latter are divided, rather before the centre 

 of the wing, by a curved transverse vein, thicker than 

 the rest ; from the base of the wing to this vein, the 

 longitudinal veins are furcate, beyond it they are 

 numerous, and form a great number of irregular shaped 

 cells, (differing on the opposite wing,) and terminat- 

 ing in about twenty longitudinal veins, received by 

 another vein which runs parallel with the exterior 

 margin of the wing. The hinder wings are of a dull 

 buff-ochre colour, paler next the body. 



