Mr. F. P. Pascoe on some new Genera of Curculionide. 413 
XXVIII.—On some New Genera of Curculionidae. 
By Francis P. Pascon, F.LS., ce. 
Parr I. 
[Puate XVII.] 
In arranging my collection of Curculionide, I frequently meet with 
forms that give me no little trouble in the attempt to fix their exact 
position in the family. Notes are necessarily made, and a few, 
having being worked out afresh, are here offered to the readers of 
this Journal. 
From the time of Schénherr the Curculionide, especially the 
exotic, have been a comparatively neglected group; but the great 
work of Lacordaire* can scarcely fail to give an impetus to their 
study. Since its appearance, we have had monographs of some of 
the largest and most difficult of the European genera from the pens 
of Wencker, Baer, Allard, Brisout de Barneville, &c. Dr. Kraatzt 
has given us what he considers a “ ground-work of a natural sys- 
tem,” with especial reference to M. Lacordaire’s work, so far as it 
has yet appeared; and more recently M. Jekelt (who, of all ento- 
mologists, is the most practically acquainted with this family) has 
published his ‘ Researches into their Natural Classification’§. Both 
these great authorities object to the primary divisions of M. Lacor- 
daire, based on the covering (Adelognathes), or the contrary (Pha- 
nerognathes), of the maxille by the mentum. Dr. Kraatz would take 
in preference the length of the scape (?.¢. either extending to or 
passing the anterior margin of the eye). ‘‘ Whether this is the case 
or not,” he says, ‘‘ may appear very unimportant; but it should not 
be forgotten that the different lengths of the scape must stand in 
necessary connexion with the scrobe, which plays an important part 
in the determination of the genera. If the scape passes the anterior 
border of the eye, it will be too long for the scrobe. This must in- 
fluence the movement of the whole of the antennz—one of the 
essentials in the life of the insect” ||. In the “Adelognathes”’ the 
genera are generally “ long-scaped ”; between these and the “ long- 
scaped ” genera of the “ Phanerognathes”’ there is often a near rela- 
* Genera des Coléoptéres, tom. vi. 
t Berliner Entomologische Zeitschrift, 1864, pp. 154 e¢ seq. 
t Annales de la Société Entomologique de France, 1864, p. 537. 
§ An analysis of Lacordaire’s sixth volume is given in the ‘ Entomologist’s 
Annual’ for 1865, pp. 148 e¢ seq. 
|| M. Jekel (Ann. de la Soc. Ent. Fr. 1864, p. 556) observes on this point, that 
if the scape encroaches on the eye, it is as completely lodged in the scrobe as if 
it fell short of it, the scape meeting the eye on its lowest portion. 
