SHRIMPS AND PRAWNS. 



both head and body can be cleaned out, and the space filled 

 with white cotton-wool. When thoroughly dry the two parts 



may be re- 

 united by a 

 mere touch 

 with Le- 

 page'sLiquid 

 Glue. It 

 would be 

 well to do 

 this in dup- 

 licate, and 

 whilst still 

 fresh to take 

 one speci- 

 m e n to 



pieces, and mount the 

 various appendages on a 

 white card, gumming 

 them down in their natural sequence. 

 Leaving the pear-shaped eyes where 

 they are, we commence with the first 

 or internal antennae, which we shall 

 thus see has its basal joint spread out 

 into a broad scale which ends in a 

 sharp spine at the side of the second 

 joint. It is in this basal joint that the 

 Prawn's organ of hearing is contained. 

 Spence-Bate and others have investi- 

 gated this remarkable organ in various 

 species, and find there is a little 

 chamber with a slit-like opening, only 

 to be seen when the creature has just 

 shed his coat of mail, at which time 

 he picks up with his " finger and 



THE PRAWN. 



