261 



versus confertim subtilius) puiictulato, vix perspicue 

 canaliculato, latcr'bus minus rotundatis, angulis anticis 

 vix acutis minus productis posticis (superne visis) obtuse 

 rectis, basi marginata utrinque parum sinuata ; scutello 

 punctulato ; elytris geminato-striatis, sat crebre subfor- 

 titer punctulatis ; pygidio subf ortiter vix crebre (in parte 

 mediana fere laevi) punctulato; tibiis anticis fortiter tri- 

 dentatis; tarsis posticis minus elongatis minus robustis, 

 articulo basali 2" longitudine sat aequali ; coxis posticis 

 quam metasternum multo brevioribus ; segmento ventrali 

 apicali postice truncato. Long., 4-i 1.; lat., 2f 1. 

 The most distinctive characters of this species (in compari- 

 son with its immediate allies) seem to be the purplish-red tone 

 of colour of its dorsal surface — perhaps not constant — its 

 bright iridescence, and the form of its prothorax (compara- 

 tively wide in front, with the greatest width slightly in front 

 of the middle). When I described .1. micans (Pr. Lin. Soc, 

 N.S.W., 1890, p. 546), I unfortunately confused this species 

 with it as a colour var., and wrote the diagnosis with a view 

 to indicate a much greater variety of colouring than I have 

 now any reason to think can be "found in that species. The 

 specimen described was one of those called in the appended 

 note ''a bright blue insect." Consequently I have found it 

 necessary to provide a correction of the description of A. mi- 

 cans (vide infra). I believe the type of .4. fjravlroUis to be a 

 female. 



South Australia. 



A. tetricus, sp. nov. Ovatus vel subovalis ; modice convexus ; 

 minus nitidus; metasterno longe minus crebre setoso ; 

 niger vel piceo-niger, antennis palpis tarsis et (nonnul- 

 lorum exemplorum, 1 alterutrius sexus) tibiis anticis 

 rufis ; antennis 8-articulatis, flabello perbrevi ; clypeo con- 

 fertim subrugulose, fronte sat crebre, subfortiter punctu- 

 latis; prothorace quam longiori ut 8 ad 5 latiori, antice 

 sat angustato, supra sat crebre subfortiter punctulato, vix 

 perspicue canaliculato, lateribus leviter arcuatis, an- 

 gulis anticis vix acutis parum productis posticis (superne 

 visis) rectis, basi marginata utrinque leviter sinuata; 

 scutello punctulato; elytris fortiter geminato-striatis, 

 crebre sat fortiter punctulatis, interstitiis inter striarum 

 paria sat fortiter convexis ; pygidio minus crebre vix for- 

 titer punctulato; tibiis anticis extus tridentatis; tarsis 

 elongatis robustis, posticorum articulo basali quam 2"^ 

 vix breviori ; coxis posticis quam metasternum multo bre- 

 viori ; segmento ventrali apicali postice leviter vel vix 

 emarginato. Long., 4-^-5J 1.; lat., 2i-2| 1. 

 Of this insect five specimens are before me, but I can find 



