in the British Museum, 11 



mination ; and I tliink this synonymy must be received with 

 caution. Harold describes decllvis as having dull elytra ; 

 M'Leay describes desectus as " nitid," the elytra as smootii, 

 and 1 think it very possible that his species may be distinct 

 from 0. declivis ; at any rate, there are in the Museum 

 collection two closely allied species which differ in one having 

 dull and the other shining elytra, as well as in the sculpture 

 of the thorax, &c. 



Onthophagus rwpicai^ra^ sp. n. 



Ater, opacus, convexus : thorace granulis nitidis crebre sparsis ; 

 elytris striatis, striis bene impressis subtilissime discrete punctu- 

 latis, interstitiis convexis, subtiliter parce punotulatis, punctis 

 setigeris ; ])Ygidio parce obsolete punctulato. 



c5' . Capite nitido, granuloso, cl3peo medio triangulariter incise, 

 sub-bideiitato, utriuque obtuse angulato ; vertice coruibus duobus 

 sat gracilibus (ad basin non conjunctis) acuminatis, vix divaricatis, 

 ad apiccm retrorsum curvatis ; thorace antice declivi, flavo- 

 testaceo-piloso, parte elevata medio loiigitudiiialiter leviter 

 sulcata, antice tuberculis duobus parvis obtusis iustructa. 



Long. 9 lin. 



Hah. Swan River. 



I place this species near 0. adelaidce^ Hope. It is a 

 somewhat singular species on account of the rather long- 

 slender horns, which are curved backwards over the thorax. 

 The thorax has its basal part much raised, and the front 

 declivous part is clothed with rather long soft pubescence. 

 The minute shining granules are rather close togetlier in the 

 front part, but almost disappear on each side of the base. 



Onthophagus Duboulayi^ sp. n. 



Obscure purpureo-cupreus, sat opacus ; clypeo medio triangulariter 

 inciso, sub-bidentato, utrinque obtuse angulato ; thorace sat 

 crebre sat t'ortiter punctato ; elytris nitido-striatis, striis discrete 

 subtiliter punctatis, interstitiis parum convexis parce subtiliter 

 punctatis. 

 cJ . Capite nitido, antice crebre subtiliter punctulato, postice sub- 

 Isevi, vertice cornibus duobus erectis (ad basin non conjunctis) 



. linearibus, sat distantibus, paullo divaricatis, ad apicem paullo 

 introrsum curvatis : thorace postice bene convexo, medio leviter 

 obtuse sulcato, antice declivi subnitido, subtiliter punctulato, 

 utrinque Itevissime late impresso. 



Long. 31 lin. 



Hah. West Australia [Du Boiday). 



Allied to 0. adelaidce. The horns on the head are of 

 nearly equal thickness throughout and blunt at the apex ; 



