ARCANA ENTOMOLOGICA. 
PLATE I. 
DESCRIPTIONS OF SOME ASIATIC CORNUTED SPECIES OF 
CETONIIDA. 
—— f= 
No group of insects has attracted so much observation as the 
large species of Cetoniidee, in which the head of males is armed with 
horns, and which compose the genus Goliathus* of Lamarck, 
their extreme variety and singular formation having rendered them 
objects of attention. In its original condition, as established by 
Lamarck, this genus was characterised chiefly by the circumstance 
that the head was armed with horns. A stricter analysis of the 
family to which the genus belongs, however, appears to prove that 
many of the species which had been thus associated together belong 
to distinct groups, whilst the species which still constitute the group 
have been distributed into various sub-genera. We accordingly find 
that Gory and Percheron, in their ‘“‘ Monographie des Cétoines,” 
have separated Goliathus rhinophyllus of Weidemann (placing it in 
the genus Macronata) ; they have also adopted the genus Ynea for 
the Brazilian species, as proposed in the Encyclopédie Méthodique. 
All the other species peculiar to the Old World (including also G. 
Hoepfneri, Desj., an American insect) remain together under the 
generic name of Goliathus. Mr. Hope, however, in the first part 
of his Coleopterist’s Manual, relying chiefly on the form of the pro- 
thorax and toothing of the legs, has separated G. Polyphemus 
under the name of Mecynorhina +, G. micans under that of Dicro- 
* Dr. Thaddeus W. Harris, one of the most acute American Entomologists, in some recent 
‘Remarks upon Scarabeus Goliatus and other African Beetles allied to it,” published in the 
1st Volume of the Journal of the Essex county (U. S.) Natural History Society, proposes the 
name of Hegemon in lieu of Goliathus for this genus, in order to restore to the typical species 
its true specific name of Goliatus. 
+ The second species of this genus, stated by Mr. Hope to be in the possession of Mr. 
Joseph Hooker, is the male of G. torquatus, of which species Mr. Hope has recently received 
a specimen from Mr. Strahan, who also possesses a fine male, which has been described and 
figured by Mr. Waterhouse, in the Magazine of Natural History. 
B 
