METRIORRHYNCHUS. 



49 



rows of punctures, the rows separated only at the base of the elytra 

 by an obscure costa. 



The female differs from the male in having the antennae a little 

 less strongly dentate. 



It is difficult to decide whether Lyeus rujipennis, F., should be 

 considered identical with P. eri/throjjterum, Er., or with P. sale- 

 hrosum, W. I have here adopted Erichson's view, by which the 

 latter becomes synonymous with the Eabrician species. 



Metriorrhjmchus hsBmorrhoidalis. 



Porrostoma heemorrhoidale, Waterh., Trans. Ent. Soc, 1877, p. 79, 

 pi. ii. figs. 61a-64a. 



Elongatus, parallelus, niger ; elytromm apice rufo ; elytris qua- 

 dricostatis, interstitiis biseriatim cancellato-punctatis. d i $ • 



Long. 4| lin. 

 Hah. Van Diemen's Land. 



Dull black. Eostrum shorter than broad. Thorax small, divided 

 above into seven areolets. Elytra with the four costae distinct ; the 

 interstices with two rows of large irregular punctures, the rows not 

 divided by a distinct costa ; the apices are red. 



This species resembles M. scalaris, but is much longer and nar- 

 rower, and the rows of punctures on the interstices of the elytra 

 are much more regular. 



Lycus atratus, Fabr. (Syst. El., ii. p. 113) may perhaps be a black 

 variety of this species, and both are possibly varieties of rufi- 

 pennis, F. 



Metriorrhynchus plagiatus. 



(Plate XII. fig. 8.) 



Porrostoma plagiatum, Waterh.^ Trans. Ent. Soc, 1877, p. 80, pi. ii. 

 figs. 65-68. 



Ater ; elytris marginibus apiceque rubris ; rostro latitudine 

 breviori, utrinque impress© ; antennis bene dentatis. S • 



Long. 4| lin. 

 Hah. E. Australia. 



Rostrum very short, shorter than broad, compressed in front, 

 with a deep impression in front of the eye. Elytra deep red, with 

 a black patch extending from the scutellum to the posterior two 

 thirds, somewhat in the form of an A ; quadricostate ; the inter- 

 stices with two rows of punctures, not separated distinctly by a 

 carina. 



Possibly this is a variety of the foregoing species. 



