THE ENTOMOLOGIST. 281 
Pygidium covered. - - - - Cryptopyges. 
Pygidium exposed. - - - Gymnopyges. 
The principal types contained in each of these three grand 
divisions are then characterized in a very clear manner; but 
for a proper understanding 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 Schoénherr’s system made.t The necessity of a more 
careful study of the tibiz and tarsi, almost neglected by 
Schénherr, 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,f 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 
3rd nearly equal. : - TsoToMA. 
Bruchide, Anthribide leds Urodon), Rhino- 
maceride, Attelabide. 
Abdomen with the 1st and 2nd segments connate ; 
the remaining three movable; the 2nd usually 
much longer than the 3rd. - - - ANISOTOMA. 
Apionidee, Curculionide, Cossonide (including 
Calandra), Tomicide. 
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 Rhynchophorous series, and 
the main divisions of the great family Curculionide have 
_ * ‘Bermerkungen iiber einige deutsche Riisselkafer : Stettin, Ent. Zeitsch, ’ 
1—ix. 
+ See specially op. cit., 1847, 157. 
¢ ‘Skandinaviens Coleoptera,’ vii., Lund, 1865, 
20 
