1108 ox THE CARENIDES, WITH DESCRIPTIONS OF NEW SPECIES, 
angles i*ounded ; tlie lateral margins reflexed, without any 
thickening at the humeral angles ; a lateral row of punctures 
along the anterior half of the margins, and a sub-lateral row of 
a few widely placed punctures on each side. Anterior tibiae wdth 
three strong teeth externally ; intermediate dilatate towards the 
apex, with a compressed obtuse curved tooth externally. 
Loc. — Eiicla, West Australia. 
Euryscaphus arexarius, sp.nov. 
Niger, nitidissimus ; capite subquadrato, supra oculos unipunc- 
tato, sulcis profunde impressLs, antice fortiter divergentibus, 
postice leviter incurvis et obsolete conjunctis ; prothorace trans- 
verso, marginato, canaliculato, postice rotundato, lateribus paulum 
rotundatis, angulis anticis leviter productis, marginibus reflexis, 
duobus punctis marginalibus utrinque impressis ; elytris laevigatis, 
convexis, subcircularibus, antice leviter emarginatis, humeris 
notatis, reflexe marginatis ; tihiis anticis bidentatis, intern ediis ad 
apicem extus breviter dentatis. 
Long. 2i) mm., lat. 12 mm. 
Of a shining black. Head subquadrate, (5x8), with one supra- 
orbital puncture on each side ; frontal sulci curved inwards behind. 
Prothorax transverse (6^x11), shortly rouiided and somewhat 
sinuate behind ; the base lobate ; the sides slightly rounded ; 
the margins much reflexed, particularly at the ^wsterior angles ; 
the median line distinctly marked, crossed throughout its 
length by fine transverse striolae ; behind there is the usual 
transverse line defining the basal portion ; in front there is a 
transverse impres.sion near each anterior angle. Elytra convex, 
nearly circular (13 x 13) ; the base widely eraarginate ; the lateral 
margins somewhat flattened, with the edge reflexed, especially 
at the humeral angles ; a row of punctures along the lateral 
margins, and on the base of each elytron a few punctures in a 
single row ; the suture distinctly marked. The anterior tibiae 
bidentate ; the exterior ridge with five projections, of which the 
two lowest are teeth visible from above. 
Loc. — ^lulwala, Murray River, N.S.W. 
