73 



in doubt to what family of Melolontha to refer it ; 

 of course to attempt to assign the right genus would 

 on my part be presumption. 



Sp. 48. Quadridens. — This insect was described 

 from Hybner's cabinet ; no notice is made of it in 

 llliger's Magazine. 



Sp. 49. Variolosa. — This insect is in my collec- 

 tion, and was purchased at Lee's sale. It appears 

 to belong to the Baron De Jean's magazine genus 

 Schizonycha, which comprehends under it various 

 forms of Melolonthidse. The characters are not 

 yet published, and the name will therefore not 

 stand. Schiz. Brasiliana appears to be the type of 

 the genus Rhinaspis of Spix and Martins. Vide 

 Delect. Anim. Art. Bras. pi. 10, fig. 1, Rhinaspis 

 Schrankii. 



Sp. 54. Brunnea. — The type of Mr. MacLeay's 

 genus Serica ; as there are several subgenera be- 

 longing to this genus, I consider the Sericidse a 

 distinct family. Monsieur Laporte, in Guerin's 

 Magasin de Zoologie, has detached various species 

 from Serica, and formed from them a new genus, 

 denominated Trochalus. He possesses four species, 

 all from Senegal. In my collection there are nine, 

 and many others will be found in our metropolitan 

 cabinets. They appear to belong exclusively to 



