524 ADDENDA ET CORRIGENDA. 



vazioni sopra la Blatta acervorum di Panzer del Dottor Paolo Savi as- 

 sistente al Prof, di Botanica nelV Imp. e R. Universita di Pisa." This 

 Entomologist fully states the several respects in which its construc- 

 tion agrees with the true Blatta, but also observes " che questo in- 

 setto certamente non e una Blatta, mapiuttosto un Acheta di Fabricio o 

 Grillo di Latreille," and he accordingly names it Gryllus myrmeco- 

 philusl It is not easy to imagine a more complete confirmation 

 of the truth of the affinity here stated to exist between the GryU 

 lina and Blattina. 



P. 457, note line 12, for desireable read desirable. 



P. 497, 1. 17. Although in conformity to the plan of the Regne 

 Animal, I have assigned names to the subgenera of Scarabaus, 

 I am not without apprehension that confusion will thus arise be-* 

 tween genera and subgenera, or types of form. It may indeed be a 

 question for Entomologists to determine, whether it be preferable 

 to give names to types of form, or to designate them only by their 

 number, reckoning always from some particular type. As every 

 natural group seems divisible into five others, perhaps the latter 

 mode is the least objectionable, particularly if we were alwajs to 

 account that type of a group to be the first, which contains repre- 

 sentations of the four other forms, as well as the form which is 

 peculiar to itself. On this plan the type of Phanaus which containj 

 P. Carnifex, and that of Scarabaus which contains S.Jtagell((tui 2 

 would be the first of their respective groups. 



END OF VOL. I. 



Piinted by R. and A. Taylor, Shoe-Lane, London. 



