BY THE REV. T. BL4.CKBURN. 291 



Like G. leptus, Cancl., but differently coloured and not quite so 

 narrow and parallel, with the puncturation of the prothorax finer. 

 Compared with G. occidentalism Oand., (which I have not seen), it 

 appears to differ by its colour^ its prothorax more narrowed 

 anteriorly, &c. 



2^. S. Wales ; Blue Mountains. 



MONOCRRPIDIUS INGENS, Sp.nOV. 



Latus ; sat nitidus ; pube tenui vestitus ; obscure rufus, pro- 

 thorace in medio et ad latera et prosterni medio nigris, 

 corpore subtns plus minusve infuscato, elytrorum basi 

 iitrinque cocciuea ; antennarum articulo 4° quam 3"* fere 

 duplo longiori ; pi'othorace quam longiori (maris vix, feminse 

 sat evidenter) trans angulos posticos latiori, vix in medio 

 breviter canaliculate, angulis posticis bicarinatis vix divari- 

 catis ; elytris quam prothorax vix latioribus, ad apicem 

 emai'ginatis (baud oblique) et biacutis, seriatim punctulatis 

 (puncturis apicem versus gradatim subtilioribus), interstitiis 

 antice latis planatis postice angustis subconvexis ; prosterno 

 in medio canaliculato minus fortiter minus crebre nee rugulose 

 punctulato, suturis prosternalibus arcuatis. 

 Maris antennis prothoracis basin leviter superantibus ; pro- 

 thorace in medio subspai'sim latera versus crebre punctulato, 

 Feminse antennis prothoracis basin haud attingentibus ; pro- 

 thorace toto subsparsim punctulato. 



[Long. 11-13, lat. 3|-3| lines. 

 Resembles M. aphiloides, Cand., in build, but distinguished 

 inter alia by its colour and non-rugulose prosternum ; like 

 M. eruhescens, Cand., in colour, but distinguished inter alia by it.s 

 different shape, arched prosternal sutures and prothorax less 

 closely punctured and canaliculate only very feebly and for a 

 short distance in the middle of its length ; from M. Brucki, Cand., 

 it differs by the flanks of its prothorax not folded to form a 

 gutter ; from all the other large Australian Ilonocrepidii the well- 

 defined channel on the middle of its prosternum in front of the 

 front coxae will distinguish it. I cannot specify any good character 



