432 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



Its small size, and the deep foveiform impressions of the third 

 interstice of the elytra distinguish the species ; it is rather a 

 member of the centi-al group of the genus than of Ceiieits, or 

 Ophnjosternus. 



Prosopogmus namoyensis, n.sp. 



Apterous ; elongate-oval, lightly convex, prothorax subquad- 

 rate ; elytra striate, interstices convex, shoulders dentate ; meta- 

 sternal episterna elongate. 



Black, shining (elytra slightly opaque in ij) ; tarsi and antennje 

 reddish. Head not large, smooth ; front strongly bi-impressed ; 

 eyes convex, prominent, not set deeply in orbits behind. Labrum 

 hardly emarginate. Prothorax subquadrate (2-2 x 2-5 mm.), 

 widest a little behind anterior marginal puncture, hardly 

 narrowed to base, wider across base than across anterior margin ; 

 sides lightly rounded, strongly and roundly narrowed to anterior 

 angles, not sinuate before the base ; anterior margin emarginate ; 

 base lightly emarginate in middle, a little oblique at each side ; 

 anterior angles obtuse ; basal angles well marked, sub-rectangular ; 

 lateral border narrow, reflexed ; median line lightly impressed ; 

 a deep straight impression extending forward from base on each 

 side, rather nearer median line than margin ; space between these 

 impressions and margin depressed and impressed with a wide 

 foveate impression ; the lateral basal impressions minutely 

 punctulate ; posterior setigerous marginal puncture beside border 

 at each basal angle. Elytra ovate, considerably wider than 

 prothorax (5x3-3 mm.) ; sides subparallel, shortly and lightly 

 narrowed to shoulders ; base truncate ; apical curve lightly 

 sinuate on each side ; striae deeply impressed ; striole at base of 

 second interstice short, linear ; interstices convex, eighth and 

 sixth enclosing seventh at apex ; third 3-punctate, anterior 

 puncture on basal third near third stria, two posterior ones on 

 course of second stria ; ninth interstice punctate, the punctures 

 interrupted in middle ; basal border ending in a short dentiform 

 projection at humeral angles; lateral border reflexed. Prosternum 

 bordered on base. Metastei-nal episterna elongate. 

 Length 9, breadth 3-3 mm. 



