CNEMACANTHIDAE. Co 



are no concave marginul channels, apex slightly but widely eniarginate; 

 the dorsal groove attains the short longitundinal striae, but not tlif apex, 

 ■which is feebly rugose, and impressed near the angles only; the basal 

 fossae are narrow and placed close to the sides; there are just a few 

 slight linear impressions across its surface. Elytra twice the length 

 of the thorax, rather broader, their sides gently curved but distinctly 

 margined, the extremity strongly rounded; on each elytron there are 

 8 series of moderate, sometimes narrow and eloiinatrd punctures, which 

 are continued, but become more confused, towards the apex; they are 

 not connected by definite striae, and are not enlarged near the sides; 

 the interstices are smooth and plane, and the usual smooth lateral area 

 is not costiform. 



Legs moderate; the intermediate tibae asperate, with obtusely 

 prominent outer angles. Antennae sparingly pubescent from the 4th 

 joint. 



Underside shining. Flanks of prosternum distinctly punctate, the 

 central line almost smooth, with a well-marked intercoxal furrow. 

 Abdomen more finely punctured near its sides, the terminal segment 

 finely transversely strigose and bipunctate at each side of the extremity. 



Nearly related to 1760 and M. nitidum, 2597, which perhajDs is 

 merely a local variety of the former, but differing from both by the 

 finer sculpture; the thorax and middle of the head are almost smooth, 

 the eh'tral punctures are seriate, rather narrow and fine, and the 

 thoracic fossae are deep and narrow and extend to the basal mar<4in. 



(J. Length, 20 mm.; breadth, 6 mm. 



Mount Arthur. Found bv Mr. G. V. Hudson in Februaiy, 1911. at 

 an altitude of 4,000 ft. " 



3390. Mecodema dissonum sp. no v. 



Elongate, medially narrowed, subdepressed ; glossy black, slightly 

 bronzed, legs, antennae, and palpi piceo-rufous, tliesp last with fulvcscent 

 tips. 



Head elongate, not quite as broad as the thorax, distinctly punctate 

 in line Avith the back of the prominent eyes, its sides rather deeply 

 and irregularly striate, the vertex with shallow transversal impressions, 

 the forehead deeply longitudinally sulcate, and with a pair of setigerous 

 punctures; labrum subtruncate, with a median gi'oove, its apex sex- 

 punctate. Thorax cordate, somewhat incurved in front, its margins a 

 little flattened, without cliannels, and only obsoletcly orenulate ; it is 

 only a trifle broader than long, its sides are gently rounded to behind 

 the middle, and a good deal sinuously, though not abruptly, narrowed 

 towards the almost rectangular posterior angles; disc nearly flat, very 

 faintly transversely striate, the large eh)ngate 1)asal fossae, however, 

 have short undulating striae, the frontal j^unctation is like that of the 

 occiput but does not extend to the angles, near each of these there is 

 a shallow depression, the basal sculpture is much less definite, the dorsal 

 g]-oove does not reach the base or apex, near each side before the middle 

 there is a punctiform fovea. Elytra more than double the length of 

 the thorax, about a sixth broader than it is at the middle, their sides 

 evenly and slightly curved, so that the extremity is nearly as wide as 

 tlu! base ; along the middle of each elytron there is a pair of rather 

 broad, indistinctly raised costae, another, nearer the side, is more or 

 less interrupted; between these, and also alongside the broad suture, 

 there are somewhat irregular double series of moderately fine punctures, 



