283 



manifeste granulatis ; prothorace quam lon^iori ut 16 ad il 

 Jaliori, antice leviter (maris ?) vel vix (feminse ?) oblique 

 retuso, antice crebre subrugulose vix fortiter (in cetera parte 

 minus crebre nee rugulose, retrorsum gradatim magis obso- 

 lete) punctulato, antice longitudinaliter subtiliter carinato, 

 postice longitudinaliter leviter canaliculato, foveis sublater- 

 alibus profundis, lateribus ante medium vix perspicue (pone 

 medium fortiter) sinuatis, angulis anticis sat acutis (nullo 

 modo dentiformibus) posticis obtusis bene definitis, basi 

 anguste planata ; elytris crenulatostriatis, crenulis leviter 

 impressis subpunctiformibus, interstitiis sat planis vix 

 perspicue punctulatis ; pygidio crebrius subtilius punctulato ; 

 metasterno Isevi (lateribus et parte antica sat grosse excep- 

 tis) punctulato ; tibiis anticis sat brevibus. 

 ' Maris (?) carina frontali sat fortiter sinuata ; elytris magis 

 nitidis. 

 T'eminEe (?) carina frontali fere recta ; elytris minus nitidis, 

 subtilissime coriaceis. Long., 5 — 5|- 1.; lat., 3^ — 3^1. 



I believe my two specimens of this insect to be male and 

 female, but the differences are not so strongly marked as not to 

 be possibly variations of development in one sex ; there is no 

 decided distinction in the front tibiae. The species superficially 

 resembles the female of the Onthophagus mentioned above as 

 0. desectus, Macl., but differs from it by its very evidently 

 wider and shorter form, by its much more nitid surface (the 

 specimen that I regard as a male has quite brilliantly nitid 

 elytra and the female is not very much less nitid), by its 

 pronotum much less retuse in front without anything like a 

 tubercle at the top of the retuse part, by the absence of a turned- 

 up edge at the base of the pronotum, by the very much less 

 strong and close puncturation (which moreover is non-rugulose) 

 of the hinder part of the pronotum, &c. In the specimen which 

 I regard as the female of 0. Hoivitti the hind one-third of the 

 pronotum is all but non-punctulate. 



Northern Territory of S. Australia. 



0. Zietzi, sp. nov. Mas. Latus; supra glaber; subtus sparsim fulvo- 

 hirtus; nitidus ; niger, tarsis et antennarum basi picescentibus ; 

 clypeo crebre fortiter punctulato, antice emarginato ; sutura 

 olypeali fortiter carinata ; carina frontali fortiter elevata, 

 supra fortiter arcuatim emarginata ; capite inter carinas sat 

 grosse punctulato ; oculis angustissimis minus subtiliter 

 granulatis ; prothorace quam longiori ut 18 ad 11 latiori, 

 entice breviter rebuso, sparsius minus fortiter punctulato, 

 lateribus ante medium baud (pone medium parum perspicue) 

 sinuatis, foveis sublateralibus bene definitis, angulis anticis 



