Mnematium Rilchii, and Phanccus Kirhii. 539 



Genus. Mnematium. MacL. 



RiTciiii. M. nigronitidum capite punctato verfice depresso, fho- 

 race latissimo punctata^ elijtris atris suhsulcatis. MacL. 



Mnematium Ritchii. MacL. in Ilor. Entom. V. 1. 

 pt. 2, p. 506. 



Tab. 20. f. 4. 



Long. Corp. | ; lat. \. 

 Habitat in Africa Boreali, Mourzouk. 

 lo 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 " Ilorae Entomologicae," as supplying the chasm 

 that previously intervened between his groups of Heliocantharus 

 and Paclii/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 Scarabceidce. 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. PiiANiEus. Mac L. i 



KiRBii. P. splcndide viridis, capite apice utro^ suhhidentato, 

 thorace glaberrimo, elijtris longltudinaliter sukatis, antcmiis 

 Jerrugineis. 



Tab, 20. f. 5. mas. f. G./wm. 

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

 Thorax nitidus depressus inermis, anguiis posticis subohrusis, 

 margine reflexo ; punctis posticis nullis. E/y/rrt glabra, sulcata, 



