414 Mr.F.P. Pascoe on some new Genera of Curculionide. 
tionship, and the genera, therefore, appear to be “ unnaturally sepa- 
rated.’ Dr. Kraatz gives various examples in illustration of this 
position, mostly, however, taken from European genera. 
M. Jekel, who distinguishes the “ Attelabides,”’ “ Cossonides,” and 
“ Calandrides” as families equally with the Brenthide, Bruchide, 
&e., and, putting aside the ‘ Brachycerides,” “‘ Byrsopsides,” and 
“ Amycterides,”’ divides the true Curculionide into those in which 
the male is smaller and narrower posteriorly than the female; the 
latter being more depressed, he calls this division “ Platygynes.” 
They are all “ Cryptopyges” and “ Symmerides”*, and ‘ contain 
the immense majority of the Brachyrhynchi and Erirhinides of 
Schonherr, all the Adelognathes of Lacordaire (less the Brachyce- 
rides), and a part of his Phanerognathes symmerides.” In another 
division, which M. Jekel names ‘“ [sogynes,” the difference between 
the sexes is very insignificant, the male being only sometimes a 
trifle smaller than the female ; but there is no difference in propor- 
tions, as is seen in the former division. The Isogynes are all “ Cryp- 
topyges,” and for the most part ‘ Symmerides,” and are “ composed 
in great part of the Brachyrhynchi and Erirhinides of Schonherr, 
not comprised in the preceding division.” Some of these are “ Bre- 
virostres Homorhines ” (7. e. rostrum alike in both sexes); others are 
“ Heterorhines.” In the third and last division, *‘ Metriogynes,”’ the 
males are never smaller, but are often superior in size to the females, 
and especially in the greater bulk of the prothorax, and often also of 
the elytra at the base. They comprise the greater part of the Apo- 
stasimerides of Schonherr, and some of his Erirhinides, and are divided 
into “ Cryptopyges” and “ Gymnopyges.” 
Although no special arrangement of the Curculionide is attempted 
either by Dr. Gerstaecker or M.C.G. Thomson, we may glance for a 
moment at their views relative to the position and limits of the 
family itself in its place among the Rhynchophora. Dr. Gerstaeckert, 
discarding the latter division, refers the rostriferous families, toge- 
ther with the Longicornia, Chrysomelina, &e., to the “ Coleoptera 
cryptopentamera.” First separating the Bruchide as a distinct 
family, we have his four “groups,” ‘“ Anthribini,’ Brenthide, 
Rhynchitide, and “ Curculiones genuini,” brought together to form 
his family “ Curculionina.” In this arrangement Calandra and 
Cossonus and their allies are not distinguished from the true Cureu- 
lionidxe, and Bostrichide follow as another family. In the seventh 
volume of ‘Skandinaviens Coleoptera,’ just published, M.C. G. 
* Not ‘* Synmerides,” as it is generally written. 
+ Peters, Carus, und Gerstaecker, ‘Handbuch der Zoologie,’ p. 159. 
