50 REVISION OF THE AUYCTERIDES, vi., 



eJytral tubercles. The division of the supraorbital crests into two rami is hardly 

 discernible. 



Hab. — Victoria : Portland. 



ACANTHOLOPUUS GRAVICX)LLIS Mucl. 



Macleay, Trans- Ent. See. N.S. Wales, i., 1800, p. 32it. 



d. Size moderate. Black; rather sparsely clothed with brownish sub- 

 pubescence. 



Head concave in front, rather densely clotlie<l; intercristal ridge strongly 

 developed ; supraorbital crests biramate, arising from a comparatively slender 

 stalk, the anterior branch short and rather obtuse, projecting upwards and for- 

 wards, the posterior much longer and more slender, coining upwai'ds and some- 

 what backwards. Rostrum rather deeply concave, the external margins triangular- 

 ly raised and strongly angulate about middle; internal ridges short, oblique, wide- 

 ly separated at base; basal foveae small, deep. Antennae of moderate length; 

 second joint of funicle hardly longer than lii-st ; club moderately elongate, pedun- 

 culate. Prothorax with median area longitudinally impressed in middle, with a 

 few rather obscure granules; submedian tubercles erect, not in straight line, the 

 fii-st strongly raised in a securiform crest projecting well over the heaii, the 

 second erect, conical, the third and fourth somewhat more outwardly placed, 

 erect and conical, fifth external to fourth, low and granulifoi-m, followed by one 

 or two granules irregularly arranged, sixth projecting backwards but smaller than 

 in adelaidae; lateral tubercles subtriangular. the anterior considerably smaller 

 than the middle to which it is joined at base, the posterior nearly as long as the 

 middle. Elytra with rows of fairly definite punctures, transversely confiuent so 

 as to give sculpture a .somewhat wrinkled appearance; granules small but evi- 

 dent; first row of tubercles consisting of granules in basal portion, becoming 

 somewhat larger and noduUform about middle, and ending with 2-3 definite 

 tubercles, the last the largest and strongly conical; second row with 8, the basal 

 ones small and obtuse, the posterior ones larger and more conical, ending on a 

 lower level than fii-st row; humeral tubercle distinct, conical, outwardly project- 

 ing; third row with 5 conical tubercles becoming smaller and less acute posterior- 

 ly. Venter subnitid, with rather sparse pale setae; apical segment rather convex 

 antero-posteriorly. Legs simple; posterior tarsi rather shorter and stouter tlian 

 usual. 



2. Larger and broader. Head and rostrum similar, the external margins 

 with a short tooth at angulation. Elytra produced at apex, and rather strongly 

 mucronate; sculpture similar, but tubercles slightly smaller, but distinct. Venter 

 convex. Dimensions: c?. 14 X 5.5 mm-; 9. 17 x 6.5 mm. 



llah. — South Australia: Port Lincoln. 



Though closely allied to A. adelaidae. this species can be distinguished bv 

 the more distinctly branched supraorbital crests and by the anterior tubercle of 

 the submedian protlioracic row being raised in a strong crest. 



The following appear to represent a varietv ratlier tlian a distinct species. 



Vnr. 



d. Very similar to typical specimens, but elytra! granules more distinct 

 and tubercles smaller. 



5. Elytral granules much more evident; tubercles smaller and granuliforin 

 with the exception of apical tubercle of first row and la.st 3 of second, and these 



