BY H. J. CARTKR. 163 



Helms, were not previously described, as I then considered the 

 species possibly conspecific with C. captiosus Bates, (from Cape 

 York). A specimen was sent to the British Museum for com- 

 parison with this species, and Mr. Blair answered my query very 

 definitely "No! Bates' species has the thorax much less cordi- 

 foi'm, the elytra flatter on the disc and not so gradually rounded 

 to the declivous sides"; also, in C. captiosus, "the transition' 

 (from foliate margins to disc) "is gradual" (without separating 

 sulcus). The hind angles of C. macleayensis are very much as in 

 ('. cericollis Pasc, to which it bears a close likeness, but may be 

 distinguished by (1) more brilliant coppery surface, (2) more 

 cordate form of thorax (widest at middle in C. cericollis), and 

 (3) five strite only on each elytron, distinct, these not connected 

 behind. 



Type in Coll. Carter. 



Cardiothorax ALTERNATUS, n.sp. (Plate v., fig.7). 



Elongate-ovate, opaque brown-black; antenna?, palpi, and tarsi 

 chocolate-brown, legs and underside nitid black. 



//<'ad: labrum advanced, epistoma evenly rounded, its suture 

 straight, with lateral sutures running obliquely to the front of 

 epistoma and backwards to the eye, enclosing the sharply raised 

 canthus; antennae stout, its joints obconic, thickening outwards, 

 1-5 nitid; forehead with usual depression, containing a central 

 fovea. Prothorax areuate-emarginate at apex, apex wider than 

 base (as 7 to 5), the latter feebly arcuate; anterior angles ad- 

 vanced, subrectangular, the points a little blunted; sides moder- 

 ately rounded to near base, then rather suddenly constricted and 

 sinuate, forming a widely dentate hind angle, twisted downwards 

 and outwards; foliate margins horizontal, with narrow border 

 throughout; disc rather Hat, with clear-cut medial sulcus, two 

 fovea' on each side of this (more or less connected by impressed 

 line) and a foveate depression towards the posterior angles. 

 Scutellum oval. Elytra wider than prothorax at base; sulcate, 

 with nine convex intervals, the 1st (sutural), 3rd, and 5th wider 

 than the rest, the 7th, Nth, and 9th rather sharply carinatc, an 



