388 



INSECTS ABliOAD. 



Australia, and is a very beautiful insect. The head, thorax, and 

 upper part of the abdomen are shining blue, 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 antennse take the beau- 

 tiful form which is here 

 shown. Tliere are about 

 twenty joints, and each 

 joint is furnished with 

 an appendage, longest in 

 the middle of the an- 

 tennae, and shortening 

 gradually towards the tip. 

 As the light shifts about, 

 the shadows j^lay back- 

 wards and forwards along 

 the antenntB in a very 

 beautiful manner. A very 

 similar structure of the antenuse is seen in the Ehipidocera, 

 which has been described on page 168. This beautiful struc- 

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

 quite simple and thread-like. 



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

 blue-bottle fly. 



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



Fig. 187.— Pterygopliorus iiiterrm)tu.s. 

 (Shining blue and yellow.) 



Flu. 188. — Tenthredo eoccinocems. 

 (Green and blue.) 



(New species.) 



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

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



