BY W. MACLEAY, ESQ., F.L.S. 333 



Peomecoderus inornatus. 

 Long. 6 lin. 



Niger subnitidus, thorace subelongato tenuiter canaliculato, 

 elytris elongato-ovatis striatis postice sulco sublaterali brevi 

 tripunctato, segmentis abdominalibus 3, 4, et 5, utrinque 

 forfciter impressis, an tennis palpis tarsisque piceo-rufis. 

 This is also a Monaro insect. The head has a large trans- 

 verse impression behind the eyes, and two impressed punctures 

 on each side in front, the posterior being on the sutui'e of the 

 epistome. The median line of the thorax is very lightly marked. 

 The elytra are distinctly striated throughout though more faintly 

 towards the sides, while under a strong lens the striee appear 

 green and indistinctly punctate. The sublateral groove is much 

 shorter than in P. Mastersii, and seems to take its rise from a 

 large punctvire. The 3rd, 4th, and 5th abdominal segments have 

 on each side a very deep round impression, but this is more or 

 less common to every species of the genus. The whole insect is 

 of a rather dullish black hue. 



Promecoderus puncticollis. 

 Long. 5 lin. 



Niger subnitidus, capite antice utrinque leviter bipunctato, 



thorace subelongato postice subrotundato medio tenuiter 



canaliculato disco ante medium utrinque bipunctato punctis 



oblique positis, elytris fortiter striatis striis ad latera sub- 



obsoletis subpunctatis, antennarum articulo basali rufo. 



This species, also from Monaro, is deeply striated on the 



elytra, excepting close to the sides. The thorax is rather long, is 



rounded at the base, has the median line indistinctly marked, and 



has two diagonally placed punctures near each side in advance of 



the middle. In other respects it resembles P. inornatus. 



Promecoderus dorsalis. 

 Long. 6 lin. 



Bruuneo-niger subeeneus nitidus, capite postice nigro-viridi, 

 thorace subelongato fortiter canaliculato antice triangu- 



