458 



CHRYSOMELIDJE. 



smooth. Elytra scarcely perceptibly depressed below base, very 

 strongly punctured, at sides finely transversely strigose, sparingly 

 longitudinally costate ; shoulders prominent, densely punctured. 

 Head and thorax with short golden hairs, elytra with rows of 

 erect golden pubescence. 



" Length 7-8 mm. 



" Hob. Andaman Islands." (Lefevre.) 



799. Abirus igneicollis, sp. n. 



Dark blue or violaceous ; antennae and legs nearly black ; head, 

 thorax and scutellum golden cupreous. 



$ . Head closely semirugosely punctured ; clypeus distinctly 

 separated from the face, punctured 

 like the head ; labrum, palpi and 

 mandibles piceous ; antennae with 

 the terminal five joints very elongate 

 and slightly dilated, third and fourth 

 equal, slender, last joint reaching 

 beyond the middle of the elytra. 

 Thorax subcylindrical, strongly trans- 

 verse, the lateral margins rather 

 strongly rounded at the middle, an- 

 terior angles produced into an acute 

 point ; the surface extremely closely 

 and evenly punctured, the punctures 

 more crowded at the sides, the inter- 

 stices at the latter place wrinkled, 

 those on the disc impressed with some 

 very minute punctures. Scutellum 

 bright cupreous, smooth. Elytra 

 wider at the base than the thorax, 



subcylindrical, the shoulders prominent, deeply impressed within ; 

 the puncturation very similar to that of the thorax, the inter- 

 stices below the shoulders transversely rugose as far as the middle; 

 the suture near the apex accompanied by a deep, short, elongate 

 sulcus. Posterior tibiae strongly widened at the apex ; claws 

 appendiculate. Prosternum subquadrate ; anterior margin of 

 thoracic episternurn convex. 



c? . Antennae with the terminal five joints broadly dilated. 

 Far. Above entirely dark blue or cupreous. 

 Length 7-7 1 mm. 

 Hob. Burma (Coll. Brit. Mus.). 



This is a species in which the sexes differ greatly in the struc- 

 ture of the antennae, a rare occurrence in this genus. The male 

 is as usual further distinguished from the female by the dilated 

 first joint of the anterior tarsi. 



Fig. 157. Abirus igneicollis. 



