74 



THE COLOUES OF ANIMALS 



species of Ceratias) the foremost tentacle bears a 

 luminous organ which is suspended as a lure in front 

 of the mouth. ^ The prey are attracted by the ligbt 

 into this convenient position for effecting their capture. 

 An Indian Mantis (Hymenopus bicornis) feeds 

 upon other insects which it attracts 'by its flower-like 



Fig. 17.— Hymenopus bicornis In active pupa stage. 



shape and pink colour. The apparent petals are the 

 flattened legs of the insect. The aj)pearance of the 

 Mantis in the active pupa stage is shown in fig. 17. 

 The figure has been copied from a drawing sent by 



• A. Gunther, Cliallenger Beports, vol. xxii. p. 52, and Introduc- 

 tion, p. XXX. The function of the luminous organ was first sug- 

 gested by Liitken. 



