84 THE ANIMAL KINGDOM. 



little understood. The order Coleoptera is divided by them 

 into the families, Lamellicornes, Clavicornes, Serricornes, 

 and Palpicornes. For examples of these, which are very 

 beautiful, look at the head of the common Dung-beetle, 

 which has a clubbed antenna, formed of leaflets, capable of 

 being shut up. 



ANTENNAE OF COCKCHAFER, 



another Lamellicorne beetle, every leaflet of whose beautiful 

 antennae shows a cellular tissue of oval cells, with nucleus 

 and nucleolus, according to Quekett ; but with an external 

 cuticle of hexagonal cells, according to Carpenter. The 

 organs of sensation, sacs and sacculi, are found in them, 

 and occupy the place of the nucleoli of Quekett. (See 

 antennae of Syrphus.) The leaflets of the male are much 

 longer than those of the female. 



ANTENNA OF NITIDULARIA. 



An example of Clavicorne antennae. These Nitidularia 

 are small beetles which haunt our flowers and swarm upon 

 nettles all the Summer long, and may be recognised by their 

 antennas having eleven joints, the last three clubbed. 



ANTENNAE OF HYDROPHILUS, 



is an example of Palpicorne antennae; clubbed also, but 

 differently shaped, and having only nine joints never 

 more. 



ANTENNAE OF ELATER. 



Here is a common little beetle, often called Skip-jack, 

 from its springing up with a jerk when laid on its back ; 

 easily recognised on plants by its depressed head, and 

 long dark body ; also by its habit of falling down as if 

 dead when alarmed. The antennae are an example of the 

 Serricornes, toothed or serrated, especially those of the male 

 insect. 



For examples of variety of antennae in the Diptera, look 

 at the heads of Dolichopus, Einpis, Sepedon, and Syrphus, 

 Phora, Tabaims, &c. Compare these with the antennae of 



