279 



its apex seems to push a little into the apical ventral seg- 

 ment. 



0. sus'jnciosus, sp. nov. Mas. Ovalis ; sat nitidus; subglaber; 

 piceus, antennis palpisque testaoeis ; illis 9-articulatis, 

 tlabello 3-articulato quani articuli praecedentes 5 subbre- 

 viori j labro magno product© profunda emarginato ; 

 clypeo crebre fortiter subrugulose punctulato, antice late 

 leviter emarginato, fronte fortiter minus crebre nee 

 rugulose punctulato ; prothorace Cjuam longiori fere duplo 

 latiori, antice parum angustato, supra fortiter inaequali- 

 ter vix crebre punctulato, basin versus fere Isevi, lateribus 

 leviter sinuatim arcuatis, angulis anticis subacutis j^arum 

 productis posticis (superne visis) acutis subdentiformibus, 

 basi marginata utrinque sinuata ; scutello punctulato ; 

 elytris fortiter sat crebre subseriatim punctulatis ; pygidio 

 crebre sat grosse punctulato; tibiis anticis extus fere 

 inermibus ; tarsis anticis quam tibise multo longioribus, 

 posticorum articulo basali quam 2"'^ sublongiori ; coxis 

 posticis quam metasternum fere triplo brevioribus : seg- 

 ment© ventrali apicali postice late leviter emarginato ; 

 corpore subtus fortiter punctulato. Long., 4J 1; lat., 2 1. 

 The elytral puncturation gives a slight suggestion of ge- 

 minate arrangement in the form of pairs of rows of punctures 

 slightly more regularly seriate than the intermediate rows 

 (about three in number) which occupy the intervals between 

 those pairs. This species is somewhat close to 0. sj)inicollis, 

 Blackb. It is smaller and in all parts somewhat less strongly 

 punctulate, the pronotum almost punctureless immediately in 

 front of the base, the hind angles of the pronotum less denti- 

 form, the clypeus in front less widely and a little more 

 strongly emarginate, the external margin of the front tibia 

 with only a single feeble projection above (and close to) the 

 apical projection (in sjjifu colli s there are two strong teeth 

 above the apical projection), the pygidium non-carinate. It 

 is possible that some few of the above distinctions may be 

 sexual rather than specific and may be absent in the female of 

 0. siispiciosus, but that is not likely since I do not find them 

 distinguishing the sexes in 0. luguhris, — the only species of the 

 genus of w^iich I am confident that I have seen both sexes. 

 Western Australia : Perth. Sent by Mr. Hamilton. 



0. scissiceps, sp. nov. Mas. Breviter ovalis: minus nitidus; 

 subglaber ; rufopiceus, antennis palpisque nonnihil dilu- 

 tioribus; illis 9-articulatis, flabello 3-articulato quam 

 articuli prr^cedentes 5 conjuncti manifest e breviori : labro 

 magno product©, profunde bilob©. l©bis (superne \-isis) 

 subspinif©rmibus ; clypeo antice profunde angulatim 



