NIR.EL'S. 193 



pubescence, with silvery reflections iu certain lights. Fifth and 

 sixth abdominal segments sinuate posteriorly in the male, the 

 sixth somewhat testaceous in the middle. 



Length 24 ; breadth 5| mm. 



Hah. Burma: Tharawaddy (C'or6e<<). 



209. Zonopterus di versus, sp. n. 



Dark blue, for the most part dull; elytra yellowish or testa- 

 ceous, covered faintly with fulvous-red pubescence, the apical 

 fourth and a spot of variable size on the disc of each before the 

 middle, dark blue ; antenuse with the first five joints dark blue, 

 the rest black ; body beneath dark blue, sometimes almost black, 

 with a faint covering of black pubescence. Head finely rugulose- 

 punctate above and on the front ; the clypeus transversely but 

 somewhat irregularly rugulose. Antennae extended only a little 

 past the middle of the elytra in the $ ; fourth and fifth joints 

 narrower than the third, very slightly angulate at the apex ; sixth 

 to tenth broader, somewhat compressed, acutely angulate at the 

 apex on the anterior side. Prothorax with a short obtuse tubercle 

 at the middle of each side, densely rugulose-punctate above, some- 

 what transversely rugulose near the basal margin ; its length a 

 little greater than its width at the base. Scutelhim subnitid. 

 Hind femora moderately thickened, finely punctulate, extending 

 in the S up to and in line with the front border of the dark-blue 

 apical area of the elytra. First joint of hind tarsus longer than 

 the next two joints united. Intercoxal process of prosternum 

 testaceous posteriorly, emarginate at the end, not reaching to the 

 epimera ; the acetabula distinctly open posteriorly. 



Length 21-22 ; breadth 5 mm. 



Hub. Ceylon. 



Genus NIR^US. 



Nirseus, Newman, Mag. Nat. Hist. iv,p. 194 (1840). 

 Euchroa, Guer. iJeless. Soiiv. d'un Vcy. \\, p. 56 (1843). 



Type, N. tricolor, Newm. 



liaiuge. That of the type species. 



Tliough not considered distinct by Lacordaire, this genus 

 differs from Pachi/teria, Serv., by well-marked structural characters. 

 The head is rather broad, and not narrowed and elongated 

 in front ; the clypeus is short, with a slight projection at the 

 middle of its front margin; the membranous epistome rather 

 broad and the labrum small ; the mandibles are robust in the male, 

 and differ in shape from those of Pachgteria — the outer border 

 of each forms an almost continuous curve and each is armed 

 with a strong tooth on the inner side. The antennae are very 

 thick like those of Pachyteria but much shorter, those of the male 

 not extending past the middle of the elytra ; they are gradually 



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