18 ON THE CETONIID^ 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 Perclieron do not adopt this groupe, and in their usual self-sufficient 

 way, state that I first separated it from Cremastocheilus, 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 Cetoniida, 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 a& 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) Genuclius cruentus, Oliv. 



Cremastocheilus cruentus, G. P. p. 115. tab. 16. fig. 3. 

 Sp. 8. (Cryptodinus) Genuchus sanguinolentus, n. s. 



Descr. Genuchus glaber, ater elytris striato-punctatis exteme subsulcatis ad suturam utrinqixe 

 bistriatis maculis duabus oblongis et apice subsanguineis, ano bimaculato maculis rufis. 



Long-. 5 lines. 



30. Cremastocheilus 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 Macromitius. 

 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 CetoniidcR 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 Cremastocheilus 

 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. 



