472 AUSTRALIAN COLEOPTERA, WITH DESCRIPTIONS OP NEW SPECIES, 



piece very broad, posterior 4 tibise emarginate externally before 

 the apex, body pubescent, apical joint of antennae appendiculate. 



In the male the 5th ventral segment is of very complicated 

 structure and presents diflferent appearances from different points 

 of view ; when looked at from vertically above it there is seen to 

 be a rather small somewhat semicircular excavation occupying 

 the whole length of its middle part, with a narrow longitudinal 

 shining keel running down the middle of the excavation. This is 

 not unlike the structure of the corresponding part in T. negligens^ 

 but in that insect the excavation occupies a larger area and is 

 differently shaped, and the central keel is much wider and feebler. 

 The basal joint of the anterior tarsi in the male is not much 

 dilated. A female, which I believe appertains to this species, is 

 somewhat larger than the male (long. 1| lines) and has the head 

 unicolorous with the rest of the body, and antennae not much 

 longer than half the whole insect. 



Port Lincoln. 



TOMYRIS ANTENNATA, sp.nov. 



Breviter oblonga ; sat nitida ; supra capillis argenteis erectis 

 minus sparsim vestita; nigro-senea, capite antice plus minus viridi; 

 labro, mandibulis (his, nonnullis exemplis, apice infuscatis), palpis, 

 antennis (articulis ultimis apice nigricantibus exceptis), tibiis (bis 

 plus minus infuscatis), tarsisque, brunneo-testaceis ; capite pro- 

 thoraceque (illo inter oculos carina nitida instructo) sat confertim, 

 elytris sparsius, fortius punctulatis ; corpore subtus pedibusque 

 sat longe sat dense albo-vestitis : prosterno confertissime, meta- 

 sterno sat confertim (medio sparsim), abdomine femoribusque sat 

 sparsim, punctulatis; oculis sat fortiter convexis; elytris postice 

 sat abrupte declivibus ; prothorace vix transversim impresso ; 

 antennis corporis dimidio parum longioribus, articulis 6-10 sat 

 fortiter compressis elongato-conicis, 3° et 4° inter se sequalibus. 



[Long. 1|, lat. -^-Q line. 



The structure of the antennae of this insect (the subapical joints 

 of which are verj little longer than their greatest width and give 



