470 AUSTRALIAN COLEOPTERA, WITH DESCRIPTIONS OF NEW SPECIES, 



surface is decidedly more nitid ; the puncfcuration of tiie el}'tra is 

 feebler, less asperate, and not so close, while that of the rest of the 

 body is similar to that of T. IcBta. The prothorax has a very 

 distinct, though not sharply defined, wide depression crossing the 

 middle of the disc. On the underside the ventral segments are of 

 a golden coppery colour. The sexual characters in the ventral 

 segments, too, are difi"erent. One sex (apparently the female) in 

 all the species of Tomyris that I have examined has the apex of 

 the 5th segment widely and gently emarginate with its apical 

 border a little thickened and reflexed. (This structure varies to 

 some extent with the species but not in a manner that seems 

 available for description). In the other sex of this species the 

 4th and 5th segments are occupied by a large deep common fovea 

 of almost circular form, on either side of which near its apex are 

 two stout blunt erect spines placed close together. In T. Iceta the 4th 

 segment of the male does not present any peculiarity, but the 5th 

 segment is of remarkable structure difficult to describe, appearing 

 different in different lights. As far as I can ascertain a large square 

 excavation occupies its middle part, but some parts stand up in 

 this excavation to the level of the general surface, and these in 

 some lights (when regarded obliquely) apjDear almost to fill up the 

 excavation so as to give the appearance of the surface of the seg- 

 ment being cut up by a deep irregular channel. In this species 

 also the basal joint of the anterior tarsi is very strongly dilated in 

 the male, while in T. Iceta it is only slightly dilated. 

 Port Lincohi. 



Tomyris longicornis, sp.nov. 



Oblonga ; sat angusta ; minus nitida ; seneo-cuprea ; clypeo 

 antice, elytris latera versus, capite subtus, coxis, metasteinoque, 

 Isete viridibus ; labro, mandibulis, palpis, antennis (articulo ultiuio 

 apice obscure excepto), pedibusque, flavis ; corpore supra confer- 

 tissime subtiliter aspere punctulato, sat breviter sat confertim 

 argenteo-pubescenti, subtus antice sat confertim postice sat sparsim 

 leviter punctulato, sat dense albo-pubescenti ; oculis sat fortiter 

 convexis ; elytris postice minus abrupte declivibus ; prothorace 



