60 



ZOOLOGY 



c 2 . Antennae straight, or, if bent, not ter- 

 minating in lamellate club. 

 di. Maxillary palp as long as or longer 

 than antennae . . .. '-.- ' . 



dz' Maxillary palp clearly shorter than 



antennae. 



e\. Six to seven ventral segments, 

 or if only five, the first 3 or 4 

 are grown together, 

 /i. Anterior coxae spherical or 

 transverse, projecting 

 little from the coxal 

 cavity. 



gi. All legs used in run- 

 ning or walking . 



g 2 . At least the hinder 

 legs used for swim- 

 ming 



/ 2 . Anterior coxae conical or 

 tooth-like, projecting 

 prominently from coxal 

 cavities. 



gi. Anterior coxae coni- 

 cal ; abdomen com- 

 posed of six rings . 



</ 2 . Anterior coxae ap- 

 proximately cylin- 

 drical ; c u t i c u 1 a 

 soft, leathery 



e 2 . Abdomen composed of five rings, 

 /i. Anterior coxae spherical ; 

 prothorax with a pro- 

 cess resting in a depres- 

 sion of the mesothorax. 

 <7i. Not capable of leaping 

 into the air 



. Hydrophilidae, 



(Water-scavengers) 



CarabidfK 



(Runners) 



Dytiscidce 



(Divers) 



Gfyrinidce 

 J (Whirligigs) 



Silphidce 



(Carrion-beetles) 



Lampyridce 



(Fin-Hies) 



Buprestidce 



(Metallic Wood-borers) 



