76 Mr. Arthur M. Lea's Revision of the 



apex shorter and the sides more constricted in the middle; 

 nevertheless it is very closely allied to togatus, and may 

 eventually be considered as merely a geographical variety 

 of that species. 



Metriorrhynchus basiflavus, n. sp. {Fig. 82.) 



^ . Black ; prothorax, scutellum, basal fifth of elytra, meso- 

 sternum, four anterior coxae and base of four anterior femora flavous. 



Head shining. Eyes large. Eostruni absent. Antennae serrate 

 passing middle of elytra, 2nd joint indistinct, 3rd considerably 

 longer than 4th, none transverse. Prothorax small, transverse, apex 

 truncate, sides lightly constricted in middle, posterior angles pro- 

 duced and acute ; 3-areoIate, median areolet rather narrow, a strong 

 carina (rather more than one-third of the total length) connecting it 

 with apex. Scutellum semicircularly emarginate at apex. Elytra 

 narrow, slightly inflated towards apex ; quadricostate, the 1st (from 

 the suture) costa much stronger than the others, interstices with 

 single rows of large, rectangular punctures, becoming irregular 

 towards apex, but rather larger towards base. Abdomen with penul- 

 timate segment triangularly excised in middle. 



Length 7^ mm. 



Hab. Queensland : Barron River, Cairns (Macleay 

 Museum). 



The colour is apparently much like longicornis and 

 miniaticollis (the latter has also the elytra uniseriately 

 punctate), but from both it can be readily distinguished by 

 the triareolate prothorax ; amjyliatvs (Macleay nee Water- 

 house) has the prothorax quinqueareolate and elytra with 

 double rows of punctures, but till the sculpture is examined 

 appears almost exactly the same ; according to Water- 

 house amjyliatus would belong to Synchonnus and lasi- 

 flavus to Stadenus. 



Metriorrhynchus constricticollis, n. sp. {Figs. 24, 

 83, 164.) 



$ . Black ; basal half of elytra (except the suture and a sub- 

 triangular space about scutellum) flavous. 



Rostrum wqyj short. Antennae stout, passing middle of elytra, 

 joints wide and feebly serrated, 3rd slightly longer and wider than 

 4th, the others to 10th gradually decreasing in size. Prothorax 

 moderately transverse ; 3-areolate, apex not much narrower than 

 base and slightly constricted in middle, sides strongly constricted. 



