ADDENDA AND ERRATA. 



Since the first part of the foregoing work was in type, I have received 

 the following works on Orthoptera : 



Skandinaviens. Rutvingade Insecters Natural-hisioria. By J. B. v. Borck. 

 Lund., 1848. 



Orthoptera SvecicB ; deposita et descripta. By Joh. Wilh. Zetterstedt. 

 Lundaj, 1821. ■ 



These contain some items in regard to the classification of Orthoptera 

 which I deem of sufficient interest to be inserted here As they relate only 

 to the Swedish Orthoptera, the Phasmidce and Mantidte, which are not rep- 

 resented in the Scandinavian fauna, are omitted. 



Zetterstedt arranges the femilies as follows : 



Sec'iIon I. Hemelytra and wings horizontal. Body flattened ; femora simple: 

 Division 1. Trimera. Tarsi triarticulate : 



Fam. 1 ForJicularicE. 



Division 2. Pentamera. Tarsi 6-jointed : 



Fam. -2 Blattarice. 



Section II. Hemelytra and wings vertical. Body sub-cylindrical. Posterior 

 femora incrassated, fitted for leaping : 

 Division 1. Trimera. Tarsi triarticulate : 



Antennae setaceous. Pectus without laminae. Wings subulate : 



Fam. 3 " Achetarice. 



Antennae usually filiform, rarely clavate. Wings simply plicate : 



Fam. 5 Gryllides. 



Division 2. Tetramera. Tarsi 4-jointed : 



Fam. 4 "... Locustarice. 



His family Gryllides, which is synonymous with our Acrididce, he sub- 

 divides and arranges as follows : 



I. Gryllus. — Antennae inserted in foveolae between the eyes. Eyes ovate, 

 not prominent. Thorax (pronotum) rounded posteriorly, or slightly pro- 



