482 SOME NEW SPECIES OF COLEOPTERA, 



Nascio costata, n.sp. 



Elongate, sinuate ; the whole surface above and below 

 metallic bronze, moderately nitid ; head bronze with green 

 reflections, prothorax concolorous bronze, elytra bronze with 

 some obscure darker patches, and two small yellowish spots 

 close together on the apical declivity ; antennae greenish- 

 bronze, underside and legs bronze of a lighter shade, and more 

 nitid than the upper surface. 



Head rugosely unevenly punctate, with nitid tubercles 

 above the insertion of antennae. Frothorax with apex slightly 

 raised, and advanced in middle, advanced and rounded at 

 anterior angles, sides subparallel anteriorly, slightly sinuate 

 behind, posterior angles rectangular, not produced ; disc 

 with a long wide central depression, deepening at the base 

 (giving the appearance of a darker colour), and a fine sub- 

 basal transverse depression; coarsely punctate, base truncate. 

 Sculellnin small and circular. Elytra: surface undulate and 

 uneven, base closely fitting and of the same width as pro- 

 thorax, soon widening at shoulders, sinuate at middle, again 

 widening and sinuately narrowed behind, the apex produced, 

 sublobate, and rather wide at its extremity, strongly serrated 

 on sides, with strong exterior spines, the sutural region a 

 little produced, but scarcely spinose. Disc punctate-striate, 

 depressed behind scutellum, with strong post-median lateral 

 depressions, having two strongly raised nitid, parallel and 

 sinuate costae on each elytron extending from base to apex, 

 the interior pair the more strongly raised, diverging and 

 raised anteriorly, with a slight indication of a third costa 

 exterior to the preceding ; shoulders gibbous, the whole sur- 

 face finely shagreened. Abdomen closely punctate, sternum 

 finely and closely rugose, whole undersurface clothed with 

 decumbent golden hairs. Dimensions. 6-5-10-5 x 1-75-3-75 mm. 



/lab. — lllawarra (Mr. W. Duboulay and the author), 

 Ourimbah (Mr. H. Cox), Dorrigo (Mr. R. J. Tillyard). 



