THE ENTOMOLOGIST. 281 



Pjgidiura covered. .... Cryptopygcs. 



Pygidium exposed. ... Gymnopntjcs. 



The principal types contained in each of these three grand 

 divisions are then characterized in a very clear manner; but 

 for a proper nnderstanding of this system, a vast improvement 

 on all that preceded, the reader must refer to the original 

 memoir. In developing the arrangement of the tribes repre- 

 sented in our Fauna, I shall be largely indebted to the views 

 expressed in this most valuable memoir of Mr. Jekel. There 

 remain to be mentioned two Faunal contributions to the 

 history of this subject: — 



1. A series of remarks by Mr. Suffrian,* in which the 

 German species of several genera, not before carefully 

 studied, are more fully elucidated, and various criticisms 

 upon Schonherr's system made.f The necessity of a more 

 careful study of the tibia) and tarsi, almost neglected by 

 Schonherr, is insisted on, and an arrangement of the German 

 genera in groups upon these characters is given. 



2. That most admirable work of Prof. C. G. Thomson, | to 

 which no entomologist ever refers without finding original 

 material by which he can profit; a remarkable instance of 

 the good results to be obtained by a careful and intelligent 

 study of a very limited Fauna. The Rhynchophorous series 

 is divided as follows: — 



Segments of the abdomen immovable; 2nd and 



8rd nearly equal. .... Isotoma. 



Bruchidte, Anthribidse (including Urodon), Rhino- 

 maceridte, Attelabidce. 



Abdomen with the 1st and 2nd segments connate ; 

 the remaining three movable ; the 2nd usually 

 much longer than the 3rd. - - - Anisotoma. 



Apiouida), Curculionida), Cossonidte (including 

 Calandra), Tomicida). 



From a survey of the different schemes of arrangement, 

 which have been thus briefly reviewed, it is evident that 

 while the principal types of the llhynchophorous series, and 

 the main divisions of the great family Curculionida? have 



* ' Bermerkungen iiber einige deutscbe Riisselkafer : Stettin, Ent. Zeitsch, ' 

 i. — ix. 



+ See specially op. cit., 1847, 157. 



\ ' Skaudiuavieus Coleoptera,' vii., Lund. 1865. 



2o 



