388 



INSKCTR AIM; HAD. 



Australia, and is a very beautiful insect, The Lead, thorax, and 

 upper part of the abdomen are shining bine, like the surface of a 

 watch-spring ; and the middle of the body, the scutellum, and a 

 small patch on either side in front of the wings, are bright, 

 shining yellow. In the male insect the antennas take the beau- 

 tiful form which is here 

 shown. There are about 

 twenty joints, and each 

 joint is furnished with 

 an appendage, longest in 

 the middle of the an- 

 tenna?, and shortening 

 gradually towards the tip. 

 As the light shifts about, 

 the shadows play back- 

 wards and forwards along 

 the antenna? in a very 

 beautiful manner. A very 

 similar structure of the antenna? is seen in the Rhipidocera, 

 which has been described on page 1G8. This beautiful struc- 

 ture exists only in the male, the antenna? of the female being 

 quite simple and thread-like. 



One species, Ptcrygopliorus cyaneus, is all blue, just like a 

 blue-bottle fly. 



The insect which is here drawn is new to science, and is one 



4- 



Fig. 187.— Pterygophorus interruptus. 



(Shining blue and yellow.) 



Fig. 188.- Tenthredo cocci »rus (New spa i 9. | 



(Green and blue.) 



of a great number of unnamed species of Tenthredo now in the 

 British Museum. It is a native of Darjeeling, in India. 



