39 



two rather strong punctures bearing setaB on each elytron, one 

 in front of the middle, one near the apex. 



The hinder infuscation of the elytra is subject to variety 

 being very slight in some specimens, and in others occupying 

 the whole of the hinder two-thirds of the disc. 



There is a short series of this insect in the South Australian 

 Museum. The specimens were taken near the mouth of the 

 Murray. 



T. similis, sp. nov. Minus elongatus ; depressus ; sat nitidus ; 

 capite piceo vel rufopiceo, prothorace rufotestaceo antice 

 infuscato, antennis palpis labro mandibulis pedibus ely- 

 trisque rufo-testaceis, his antice triangulariter ad latera 

 lineatim et apicem versus confuse infuscatis, abdomine 

 piceo ; antennis sat elongatis ; prothorace transverso cana- 

 liculate postice angustato, angulis posticis subrectis ; 

 elytris valde depressis subquadratis ; stria suturali leviter 

 ceteris tribus vix evidenter impressis ; stria recurva leviter 

 arcuata. Long., 2f mm. 

 Allied to the preceding, but differing in colour and in struc- 

 tural characters. The lateral infuscation consists of an almost 

 black line just before the margin, commencing about the middle 

 of the length, and running into the apical infuscation, T. senilis 

 is a shorter, broader, and more depressed insect than T. infus- 

 catus ; the striae of the elytra are somewhat fainter, and with 

 less appearance of puncturation ; the hinder angles of the 

 thorax though obtuse are not far from being right angles ; the 

 recurved stria is only very slightly arched. The marginal 

 furrow of the elytra is not much different from that of 

 T. infuscatus. The punctures on the elytra bearing setse are 

 present in this species as in the preceding. 



A few specimens occurred on the margin of the " Big 

 Swamp," about twelve miles from Port Lincoln, running with 

 extreme rapidity. 



T. Lindi, sp. nov. Sat elongatus ; convexus ; nitidus ; piceus ; 

 palpis mandibulis antennarum basi pedibus prothorace et 

 elytrorum maculis obscuris, testaceis vel rufescentibus ; 

 antennis sat elongatis ; prothorace transverso, vix evi- 

 denter canaliculato, postice parum angustato, angulis 

 posticis fere rectis ; elytris subparallelis convexis ; striis 

 vix evidenter punctatis binis prope suturam distincte, 

 tertia leviter, impressis, ceteris obsoletis ; stria recurva 

 arcuata, fortitsr impressa. Long., 3 mm. 

 The pale markings on the elytra are very cloudy and difficult 

 to describe. They consist of an ill-defined spot occupying the 

 anterior external portion, a spot on the disc a little before the 

 apex, and another at the apex, but they all merge into the 



