41 



rately narrowed behind, tliougli pretty strongly rounded on the 

 sides. The basal angles, though strictly speaking obtuse, have 

 a sharp appearance, being somewhat prominent, or almost sub- 

 dentiform. The antennae are very slender, and not quite so 

 long as in the preceding insects. 



A few specimens occurred on the banks of a small creek 

 about 35 miles north of Port Lincoln. I have also taken it 

 near Adelaide. 



T. semistriatics, sp. nov. Minus elongatus ; convexus ; nitidus- 

 piceus, antennarum basi mandibulis capite prothorace 

 pedibus et elytrorum macula subapicali obscura ruf escenti- 

 bus; anfcennis crassiusculis, capite prothoraceque conjunc- 

 tis vix longioribus ; prothorace minus fortiter transverso 

 canaliculato, postice fortiter angustato, trans basin punc- 

 tulato, lateribus antice fortiter rotundatis, juxta basin 

 sinuatis, angiilis posticis subdentiformibus acute rectis ; 

 elytris oblongis, antice fortiter 7-seriatim punctatis, hand 

 striatis (stria suturali, postice et breviter recurva fortiter 

 impressa excepta). Long., 2i mm. 

 I do not observe any setiferous punctures on the elytra of 

 this insect, which does not seem to fall naturally into any 

 genus known to me. The presence of a recurved stria (which, 

 however, is very short) associates it with Tacliys and Tacfiyta, 

 and the antennae are suggestive of the latter ; but its strong 

 convexity, the coarse serial puncturation of the elytra not ex- 

 tending beyond the middle of these organs ; the complete ab- 

 sence of striation, with the exception of the very strong sutural 

 stria commencing near where the puncturation ceases, and 

 briefly recurved a little before the apex, are inconsistent with 

 any close alliance with the species of those genera. In many 

 respects, especially the form and sculpture of the thorax, 

 T. semistriatus bears much resemblance to the European Bem- 

 hidium articulatum, Gyll., from which, however, the short 

 antennae, well defined recurved stria, &c., separate it rather 

 widely. It should be added that the reddish mark on the 

 elytra consists of a large obscure spot on the disc, a little be- 

 hind the middle. 



A few specimens have occurred to me on swampy ground in 

 several places near Port Lincoln. 



T. Mmdersi, sp. nov. Minus elongatus ; sat convexus ; nitidus; 

 rufus, antennis (his basi excepta nonnullis exemplis tes- 

 taceo-fuscis) palpis mandibulis pedibusque pallidioribus, 

 elytrorum disco nonnullis exemplis plus minusve obscure 

 infuscato ; antennis crassiusculis, capite prothoraceque 

 conjunctis baud longioribus ; prothorace (minus fortiter) 

 transverso, hand distincte canaliculato, postice minus for- 



