ZOOLOGY. 



22. Elator. Antennce setaceous, or pectinated, in soms 

 species assuming a fan-like appearance, fig. 18, plate 3, 

 protruding from a groove beneath the head; hodtf 

 oblong, the under side of the thorax terminating in aa 

 elastic spine, placed in a cavity of the abdomen : hj 

 means of this apparatus, the insect, when placed on iti 

 back, springs up and recovers its natural position. 



23 Cincidella. Antennce setaceous ; jaws prominent,, 

 toothed ; eijes projecting ; thorax roundish, margined. 



Most species in this genus are extremely ferocious, devour- 

 ing all other insects that they can overcome ; their usual 

 haunts are dry meadows, and sandy banks ; and are only to 

 be seen on wing; during the hottest part of the day, while the 

 sun shines. Their larvae lurks in holes in the sand, and 

 Jike the perfect insect, devours whatever insects it over- 

 powers. 



14. Bupertris, Antennce slender, serrated, the length of 

 the thorax ; head partly hid beneath the thorax. 



This is a most brilliant genus, many of the species rival- 

 ing in brilliancy the most highly polished gold or copper, 

 they feed on vegetable substances; their larvae is found in 

 decaying trees, and in timber. 



?5. Dyticus. Antennce setaceous ; /ixW-Ze^* hairy, formed 

 for swimming, and terminated by very minute claws. 



The whole of this genera are aquatic. 



