14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.76 



AGKILUS COERULEONIGRA, new species 



Female. — Small, very slender, strongly acuminate posteriorly, 

 shining, and rather strongly flattened above; head and pronotum 

 bottle green, and the former with a ruby tinge on the front; elytra 

 bluish or greenish black, and ornamented with pubescent markings; 

 beneath reddish cupreous, and more shining than above. 



Head with the front moderately wide, convex, wider at top than 

 bottom, the sides feebly arcuately expanded at middle, and with a 

 rather broad, shallow, longitudinal depression on the occiput and 

 vertex; surface finely, sparsely punctate, becoming coarsely, irregu- 

 larly rugose toward top, and clothed with a few short hairs behind 

 the epistoma; epistoma very narrow between the antennae, and the 

 anterior margin broadly, deeply, arcuately emarginate at middle; 

 antennae extending scarcely to middle of pronotum, serrate from 

 the fourth joint, and the outer joints as wide as long; eyes very large, 

 broadly oblong, and about equally rounded above and beneath. 



Pronotum one-third wider than long, about equal in width at base 

 and apex, and widest at middle; sides arcuately rounded, more 

 strongly posteriorly to near the posterior angles, which are slightly 

 expanded and rather acute; when viewed from the sides the marginal 

 and submarginal carinae are vaguely sinuate, narrowly separated 

 anteriorly, and connected to each other behind the middle; anterior 

 margin slightly sinuate, and the median lobe feebly, broadly rounded ; 

 base angularly emarginate at middle of each elytron, the median lobe 

 broadly rounded, feebly produced, and subtruncate in front of scu- 

 tellum ; disk moderately convex, broadly concave along base, the con- 

 cavity extending along lateral margins, but becoming narrower to- 

 ward the apical angles, and with strongly elevated, arcuate pre- 

 humeral carinae extending from posterior angles to the marginal 

 carinae at middle ; surface glabrous, finel}^ but not closely rugose, the 

 rugae more or less transverse at the middle, more oblique toward the 

 sides, and v/ith a few fine punctures between the rugae. Scutellum 

 strongly, transversely carinate, and the surface finely, densely reticu- 

 late. 



Elytra slightly wider than pronotum at base, and distinctl}^ wider 

 at base than behind middle ; sides nearly parallel for a short distance 

 behind base, feebly narrowed to behind middle (vaguely constricted 

 in front of middle), then strongly narrowed to apical sixth, where 

 they are nearly parallel to the tips, which are separately, deeply, 

 acutely emarginate, with the two teeth long, acute, and the inner 

 one distinctly shorter than outer one; disk broadly, vaguely, longi- 

 tudinally depressed along sutural margins, causing a more or less 

 distinct longitudinal costa at middle of each elytron, sutural margins 

 rather strongly elevated posteriorly, and with broad, moderately deep 



