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generic name for the larger species of the Hydro- 

 philidse, it is better not to abandon the Fabrician 

 name of Hydrophilus. The grand difference be- 

 tween Hydrous and Hydrophilus is the prosternum, 

 which in the former is produced, in the latter it is 

 not so. With respect to the species named Cara- 

 boides, it is not unusual to meet with it in a crippled 

 state. I possess in my collection a remarkable 

 monstrosity, and have occasionally seen others ; 

 when recently captured they smell like Spanish 

 liquorice. 



Sp. 5. JSllipticus. — As I am unacquainted with 

 this species, I give it as an Hydrophilus with a 

 doubt, as it is compared by Fabricius with Cara- 

 boides. 



Sp. 7* Abbreviatus. — Evidently not a Tropister- 

 nus, as the sternum is abbreviated. 



Sp. 8. Rufipes. — This species has a very wide 

 range of country, extending nearly over the Conti- 

 nent of Asia. 



Sp. 11. Orbicularis. — Now a Colostoma of Brulle, 

 and one of the Sphseridiidse. Occasionally this 

 species of Hydrobius has been confounded with 

 Cercyon, most of which have the elytra striated ; 

 the above is an exception to the general rule. 



Sp. 12. Subrotundus. — Originally described from 



