18 
ON THE CETONIIDiE OF SOUTH AFRICA. 
and towards the apex of the smooth and perfectly flat elytra. It is the giant of the genus 
Cryptodinus. The sub-genus Cyclidius, appears to be peculiar to South America. 
Sub-genus 3. Genuchus, Kirby. 
29. MM. Gory and Percheron do not adopt this groupe, and in their usual self-sufficient 
way, state that I first separated it from Cremastoclieilus, and that I have erroneously charac- 
terised it. To this I answer, that never until now, have I published a word on the subject. 
It is true that Mr. Kirby, who instituted the sub-genus in the Linnean Transactions, 
erroneously characterised it by saying that the maxillae are membranaceous. But it is 
truly, nevertheless, a natural groupe, and differs from the North American sub-genus Cre- 
mastocheilus, with which Gory and Percheron confound it, not only in having the mentum not 
hollowed out, but also in having the maxilla composed of two sharp round claws, the larger 
one being exterior, and answering to the terminal process in the Cetoniidce generally. The 
truth is, that these French critics know nothing of Mr. Kirby’s groupe Genuchus, except 
that in Dejean’s Catalogue, apparently their only work of reference, the Cetonia cruenta 
of Olivier, is assigned to “ Genucus of Macleay.” I am unacquainted with the cause of 
this, and of a myriad of smaller errors mixed up with my name in Dejean’s Catalogue ; but 
MM. Gory and Percheron copy the mistake even to the cacography of “ Genucus and thus 
appear, when writing a monograph on the Cetoniidce, to have never consulted any of 
Mr. Kirby’s writings on the subject, although some of them are printed in so well known 
a publication as the Transactions of the Linnean Society. But to proceed. The sub- 
genus Genuchus is, so far as I know, entirely African, and Afzelius says that the species are 
always found on the ground like Aphodii. Dr. Smith has brought two species to Europe. 
Sp. 7. (Cryptodinus) Genuchus eruentus, Olio. 
Cremastoclieilus cruentus, G. P. p. 115. tab. 1C. fig. 3. 
Sp. 8. (Cryptodinus) Genuchus sanguinolentus, n. s. 
Descr. Genuchus glaber, atcr elytris striato-punctatis extcrnc subsulcatis ad suturam utrinque 
bistriatis maculis duabus oblongis et apicc subsanguincis, ano bimaculato maculis rufis. 
Long. 5 lines. 
30. Cremastoclieilus capensis, of Klug, and several other African species, particularly 
from Senegal, belong to the sub-genus Genuchus, of which there are several sections known. 
I am not acquainted with the C. Brahma of Gory and Percheron, but I know their Cre- 
mastocheilus maculatus, which I suspect will be found eventually to enter the genus Macrominus. 
Their bad figure and description of this last-mentioned species, make it come far too close to 
the Cetonia maculata of Fabricius, which insect, by the way, is not a native of the Cape, 
as they say, but of the Mauritius. 
Sub-genus 4. Cymophorus, Kirby. 
31. I have never seen any species of this groupe which is the genus Cymophorus of 
Mr. Kirby. It is the only sub-genus of Cetoniidce which I do not possess. Judging, 
however, from Mr. Kirby’s description and figure of the Cymophorus undatus, the insect 
appears to come into this place. 'We may, perhaps, associate with it the Cremastoclieilus 
spiniventer of Gory, in which case it would appear to be an African form of the genus 
Cryptodinus. I suspect it, nevertheless, to be an Asiatic sub-genus, and that C. Brahma, 
of Gory, belongs to it, forming, perhaps, another section. 
