LANTERN-FLY THE TANANA. r.57 



with thick webs. As the weio-ht of one of these dwelhn<^s 

 would be greater than the caterpillar inside could sustain, it 

 attaches the case by one or more threads to the leaves or 

 twigs near which it is feeding. 



LANTERN-FLY. 



There is a large and beautiful insect, with an enormous 

 transparent prolongation of the forehead, which is supposed 

 to have a resemblance to a lantern : it is called the lantern- 

 fly (Fulgoi'a laternaria). Though often described as possessing 

 luminous properties, it is now known to be destitute of any 

 phosphorescence whatever. 



THE TANANA.* 



Often through the woods a loud, sharp, resonant stridulation 

 is heard, sounding like the syllables " Ta, na, na," succeeding 

 each other with little intermission. It is produced by a 

 species of wood cricket, called by the natives after the sound 

 it produces. The total length of the body is two inches and 

 a quarter when the wings are closed. The insect has an in- 

 ilated bladder-like shape, owing to the gTeat convexity of the 

 thin, firm, parchmenty wing-cases ; the little creature being 

 of a pale green colour. The instrument by which it pro- 

 duces its music is contrived out of the ordinary nervures of 

 the wing-case. In each wing-case the under edge of the 

 wing itself has a horny lobe. On one wing this lobe lias a 

 sharp raised margin, on the other the strong membrane which 

 traverses it on the under side is crossed by a number of fine 

 and sharp furrows like those of a file. When the insect 

 rapidly moves its wings, the file of the one lobe is scraped 



* Chlorocelus tanana. 



