Mnematium RitcML and Phanceus KirhiL 539 



Genus. Mnematium. MacL. 



RiTCHij. M. nigronitidum capite pundato vertice depresso, tho- 

 race latissimo punctatoy elytris atris subsukatis. MacL. 



Mnematium Ritcbii. MacL. in Hor. Entom. V. 1. 

 pt.2, p. 506. 



Tab. 20. f. 4. 



Long. Corp. | ; lat. f . 

 Habitat in Africa Boreali, Mourzouk. 

 In Mus. Brit., Dom. MacLeay, nost. 



The more profound votaries of Entomology need not be informed 

 that the above insect, now figured for the first time, is one of the 

 rarest and most interesting of the Class. It is the species of 

 which the discovery afforded so much satisfaction to the distin- 

 guished authour of " Horae Entomologicae," as supplying the chasm 

 that previously intervened between his groups of Heliocanthariis 

 and Pachi/soma; and which thus confirmed the justness of his 

 views, and the correctness of his conjectures, as to the natural affi- 

 nities of the family of Scarabccidce. The three specimens enume- 

 rated in the above collections are all that are at present known ; 

 that in the British Museum having been sent home by the late 

 lamented Mr. Ritchie ; and the other two having constituted 

 part of the collection formed by Capt. Lyon, R. N., who ac- 

 companied the former traveller in his unfortunate expedition into 

 Africa. 



Genus. Phan^us. Mac L. 



KiRBii. P. splendide viridis, capite apice atro, subhidentato , 

 thorace glaberrimoj elytris longitudinaliter sulcatis, untennis 

 ferrugineis. 



Tab. 20. f. 5. mus. f. Q.fcem. 

 Mas. Capitis cornu atrum, curvatum, thoracis vix longitudine. 

 Thorax nitidus depressus inermis, angulis posticis subobtusis, 

 margine rcflexo ; puuctis posticis nullis. £/v/^rrt glabra, sulcata, 



