[4Q 



Sp. 52. Hcpmorrhoidalis. — Probably a Rantus of 

 Eschscholtz. This opinion seems confirmed by 

 Erich son, who regards the above species only as a 

 variety of Rantus agilis. 



Sp. 53. Bicolor, — I am inclined to regard this 

 insect as a species of Colymbetes : it was originally 

 described from Isert's Cabinet. Its locality is 

 Guinea. 



Sp. 54. Posticatus. — Now of the genus Copelatus 

 of Erichson. These insects have the elytra deeply 

 striated, which at once marks the character of the 

 above genus. The major part of the species are 

 peculiar to the New World ; some, however, are 

 from the Old Continent, inhabiting Asia as well as 

 Africa. 



Sp. 61. Bicipes. — Evidently a typographical error, 

 it should have been printed Picipes. 



Sp. 63. Signatus. — This insect is closely allied to 

 Dyticus agilis of Fabricius, which is now a Rantus 

 of Eschscholtz. 



Sp. Q5. 8-pustulatus. — Schonherr in his Synony- 

 mia Insectorum, places this insect under his doubt- 

 ful species. From the description of Fabricius, 1 

 regard it as an Hydroporus. 



Sp. 68. Conjiuens. — Now an Hygrotus of Stephens. 

 Vide Illustrations of Entomology for the generic 



