291 



its very much more closely punctulate pygidium which (unless 

 the type is abraded) is non-setose. 



N.W. Australia (Kimberley : Mr. Helms). 



O. Koehelei, sp. nov. Sat latus; supra glaber subtus fulvo-hirtus ; 



nitidus ; niger, c lypei margine pedibusque piceis, antennis 



testaceis, pygidio ruf o ; clypeo perbrevi, fortiter crebre punc- 



tulato, vix trans versim rugato, antice vix sinuato, sutura 



clypeali sat fortiter carinata antrorsum sat fortiter arcuata, 



carina frontali sat fortiter elevata ; capite inter carinas sat 



fortiter minus crebre (pone carinam frontal em minus fortiter 



subsparsim) puDctulato ; oculis sat convexis minus angustis, 



vix perspicue granulatis ; prothorace quam longiori ut 9 ad 5 



latiori, supra sequali (foveis sublateralibus subobsoletis ex- 



ceptis) subtiliter sparsim (latera versus magis fortiter vix 



magis crebre) punctulato, lateribus (his minus fortiter 



arcuatis) ante medium haud (pone medium vix) sinuatis, 



angulis anticis obtusis minus productis posticis late obtusis, 



basi media subtiliter elevato-marginata ; elytris punctulato- 



striatis, striis sat subtilibus, puncturis quam strise sat latiori- 



bus, interstitiis subplanis subtilissime (prope marginem 



lateralem fortiter) punctulatis ; pygidio sparsim setoso, 



fortiter sparsius punctulato ; metasterno (medio late l^evi 



excepto) grosse punctulato. Long., 2 1.; lat., i\ 1. 



I am doubtful of the sex of my unique specimen ; the front 



tibiae are moderately short and stout, but it is probably a species 



in which the sexes do not differ much inter se. There is a little 



tendency to rufescence about the base and apex of the elytia 



which is probably not constant. The basal margin of the 



pronotum is an extremely tine line scarcely distinct except in the 



middle, but the pronotum certainly cannot be called unmargined 



at the base. The very feebly rounded sides of the pronotum 



furnish a good character. 



N. Queensland (Mr. Koebele). 



O. potitilis, sp. nov. (Mas. ?) Sat latus ; supra glaber ; subtus 

 sparsim fulvo-hirtus ; nitidus ; obscure seneus, pronoto non- 

 nihil aurato, antennis pedibusque ferrugineis, elytris (exempli 

 typici) prope apicem testaceo-variegatis ; clypeo perbrevi, 

 fortiter crebre punctulato, transversim rugato, antice sat 

 fortiter emarginato, sutura clypeali sat fortiter carinata 

 antrorsum sat fortiter arcuata, carina frontali nulla sed 

 fronte media tuberculo magno acute conico armata ; capite 

 pone carinam clypealem fortiter sat crebre (postice minus 

 crebre) punctulato ; oculis angustis vix convexis minus sub- 

 tiliter granulatis ; prothorace quam longiori ut 7 ad 4- 

 latiori, supra fere sequali (foveis sublateralibus et sulco obso- 



