340 INSECTS ABKOAD. 



examples where the thorax has been widened and even furnished 

 with flattened appendages at the sides. Here, however, the case 

 is quite different. The thorax is narrowed, very much raised, 

 and shaped very much like the head of an axe with the edge 

 upwards. The resemblance to an axe is increased by the fact 

 that a narrow and highly polished ridge runs along the upper 

 edge of the thorax, giving it an appearance as if it had been 

 ground and sharpened. 



The colour of the thorax is green, with a yellowish tint. It 

 is very rough on the surface, the roughness being produced by 

 a vast number of tiny elevations surrounded with a sort of net- 

 work, such as has been described in connection with several 

 beetles. On each side of the thorax, and nearly in the middle, 

 is a round, sunken spot, of a much darker hue than the rest of 

 the thorax. The head is shaped so as to suit the thorax, and is 

 sunk rather deeply in it. It is also furnished with a row of 

 slight notches over the top and front. 



The elytra are covered with extremely fine network, and the 

 wings are translucent and gauzy, adorned with a number of very 

 fine black lines, each line only running across a single fold. 

 These lines are set alternately, like those of bricks in a building, 

 and really produce a very pretty effect. The body is green, as 

 are the legs, which are very long and slender. The figure repre- 

 sents the insect of the usual dimensions, but there are one or 

 two specimens in the British Museum that are considerably 

 larger. 



The generic name Teratodes is Greek, and is formed from a 

 word signifying " wonderful." The specific name monticollis is 

 composed of two Latin words, the first signifying a "hill" or 

 " mountain," and the second a "neck." It is given to the species 

 on account of the strangely elevated thorax. 



The beautiful insect called Ckromacris colorata fully deserves 

 both its names, which will be presently explained. It is a 

 native of Brazil, and is represented of the ordinary size. It is, 

 however, extremely variable in this respect, some specimens 

 being very much smaller than the figure, though few, if any, 

 are larger. 



The general colour of the insect is dark opaque green, but 

 upon the head, thorax, and abdomen there are a number of spots 



