METRIORRHOrCHUS, 51 



quadricostatis (basi octocostatis, costis ferrugineo-rufis), interstitiia 

 crebrc biseriatim punctatis. Long. 5-7 lin. 



Hah. Peuang, Singapore, Borneo, Sumatra. 



Thorax dull velvety black. Elytra each with four strong costae, 

 which are broader at the base ; the interstices with two lines of 

 crowded punctures, which are small and round at the base (where 

 the lines are divided by a fine costa), but rather more transverse and 

 contused towards the apex ; near the apex the lines are divided by 

 a fine costa ; all the costaB are rusty red for at least half their 

 length. 



Varieties. Thorax with the elevated lines rusty yellow, or with 

 the. entire thorax red. One specimen from Penang has the elytra 

 almost entirely yellow, with only the apex black, the punctures 

 dusky. 



I think there can be no doubt that this is the Diet, lineatus, 

 Kirsch ; that author's name is, however, most unfortunately preoccu- 

 pied for a species named by Hope. It appears somewhat doubtful 

 whether this should be separated as distinct from Lycus incequalis, 

 Fabr. * (Syst. EL, ii. p. 112). The specimens in the Museum col- 

 lection which I have determined to be the Fabrician species average 

 a little larger ; the strong costse of the elytra are of equal thickness 

 throughout, and the intermediate costse are very fine, not more 

 elevated at the base, and are visible throughout the whole length. 



Metriorrhynchus kirschii, var. ? 



(Plate XII. fig. 10.) 



This differs from what I have above described as M. Mrscliil in 

 having the mesial areolet of the thorax more obtuse in front and 

 more removed from the anterior margin ; the intermediate costae of 

 the elytra are distinct and eqiial throughout their length. The 

 base of the femora and the base of the tibise are yellow, as is also 

 the sternum. 



Hah. Batchian. 



Metriorrhynchus rusticus. 

 (Plate XIII. fig. 2.) 



Atro-fuscus, opacus, parallelus ; thorace septemareolato, flavo, 

 scutello nigro ; elytris basi flavis, octocostatis, costis alternatis 

 minus elevatis, interstitiis crebre punctatis, punctis transversis. 5 . 



Long. 7i lin. 



Hah. M.y&o\ {Wallace). 



Allied to M. incequalis, but more parallel, broader in the thorax, 

 and with shorter antennae, the third joint of which is only a little 

 longer than its greatest width, more sinuate at the apex ; the fol- 



* Omitted from Gemminger and v. Harold's catalogue. 



e2 



