BY THOMAS G. SLOANE. 419 



(Id. Elytra with the interstices equal, or sub-equal. 



f. Ninth interstice of elytra merged with margin, colour of 



upper surface purple U. cyaneum, Casteln. 



ff] Ninth interstice of elytra distinct, narrow, general colour 

 (jf upper surface black (sinus of mentum divergent on 

 sides, posterior tarsi sulcate externally). 



Prosternum bordered at base H. car i natal am, Chaud. 



Prosternum not bordered at base 



//. amoiroijterum., Chaud. 



II. Basal border of elytra joining lateral border without any 

 dentiform projection. 



g. Prothorax with the sides sinuate before the base ; the 



))asal angles marked. 



Colour entirely black //. cordahom, Chaud . 



Colour purple H. saperbiim, Casteln. 



gg. Prothorax without any sinuosity on the sides near the 

 base; the basal angles rounded. 

 h. Elytra with interstices equal, 3rd impunctate ; colour 



black H. obscarijjenae,* Macl. 



hh. Elytra with 3rd, 5th and 7th intei'stices stronger than 

 others. 



Elytra with 3rd, 5th and 7th interstices carinate ; 

 colour black ; prothorax and elytra margined with 



green //. cyaneocinctum, Boisd. 



Elytra with 3rd, 5th and 7th interstices costate, and 

 little stronger than others ; elytra of a blackish 



})ut green colour //. atro-viride, SI. 



The species of Honialosoma not tabulated above are: — 

 carbonicolor, cartum, n\grxun,oi^aci'peyine, sabvirens, violaceiiin. 



* Homalomma ohacuripenne , Macl., P.L.S.N.S.W., 1887 (2), II., p. 220. 

 Specimens of this species are in my collection, which have been identified 

 by comparison with the type ; it is, however, impossible to recognise it 

 from Sir William Macleay's description in which he described the pro- 

 thorax as " longer than broad," whereas in reality it is broader than long, 

 the actual measurement (from one of my specimens) being 5x7 mm. 



