72 REVISION OP THE AMYCTERIDES, \-i., 



Protlioras wider aud Hatter, witli very deep anterior constriction; tubercles as 

 in type. Elytra with tubercles more numerous, smaller, and more closely set, 

 12, 10 and 6 in number, granules on other interstices more evident. 



?. Differs in similar manner from 5 type. DimensiDn^: c?. 16 X 6 mm.; 

 ?. 16-18 X 7-7.5 mm. 



Hab. — N.S. Wales: Coonabarabran (T. G. Sloane and Macleay Museum). 

 Var. — SBRRATicOLLis Macl., Trans. Ent. Soc. N.S. Wales, i., 1865, p. 282. 



<?. Supraorbital crests larger, feebly bidentate. Rostrum with lateral mar- 

 gins more acutely angulate anteriorly; median line impressed. (Antennae 

 broken.) Prothorax broader, the disc with much smaller granules and with the 

 submedian tubercles more distinct ; lateral margins with anterior and median 

 tubercles almost completely conjoined, the posterior triangular, acute, with a 

 smaller tubercle conjoined at base and another at basal angle. Elytra with 

 punctures more obscui'e; tubercles 8, 9, and 5 in number in the three rows; 

 humeral angle with a small nodule. Dimensions: <}. 15 X 5.5 mm. 



Hab. — N.S. Wales: Wingello, Shoalhaven River. 



The broader prothorax appears to me to be the best distinguishing character 

 of this form. The bidentate crests and the more marked angulation of the ex- 

 ternal rostral margins occur in other forms of A. denticollig. My specimens are 

 from the Shoalhaven River and were given to me In- Mr._ W. W. Froggatt; they 

 probably come from the upi>er portion of tlie river. The only difference between 

 them and the typo is that the prothoracic granules are more distinct. 



ACANTHOLOPHUS EXIMIUS Macl. 



Cubicorrhynchus e.rimhis Macleay, Trans. Ent. Soc. N.S. Wales, i., 1866, p. 332; 

 Lea, Trans. Roy. Soc. S. Aust., xsxiv., 1910. p. 18. 



c?. Large, elongate, subparallel. Densely clothed with l)rown subsquamose 

 pubescence, maculate with grey on elytra; sides with white along middle of pro- 

 thorax and maculate on elytra . 



Head impressed in front, separated from rostrum by a transverse groove; 

 with a feeble longitudinal ridge in median line, and two separate granules mid- 

 way down forehead; supraorbital crests rather shoi-t and obtuse, bidentate. 

 Rostrum widely excavate, lateral margins little raised, with a small spicule an- 

 teriorly, median line deeply impressed . Antennae long, moderately stout ; funiele 

 with basal two joints rather long, subequal; club moderately long, pedunculate. 

 Prothorax subtruncate above, with no trace of ocular lobes; disc flattened, the 

 median line hardly impressed, with rather distantly placed, moderately large, dis- 

 tinct granules, slightly larger on each side of median line, the penultimate tubercle 

 distinct; lateral margins with a short sharp tubercle in front of middle, and an- 

 other shorter one anterior to it. posterior lateral tubercle represented by a small 

 granule. Elytra elongate, almost suliparallel on sides; with fairly regular rows 

 of small foveiform punctures, the interstices with distinct rounded granules; with 

 three rows of tubercles, fii-st row about 11 in number, the basal ones mere 

 granules, slightly larger than the granules on the intermediate interstices, be- 

 coming larger posteriorly, then conical, the last 3 large and acutely conical, ex- 

 tending on to declivity ; second row with 8 — 9 tubercles, larger than the tubercles 

 of first row, the basal 6 small and obtuse, the rest conical, becoming progressively 

 larger and more acute, not readiing so posterior a level a.s the first row; humeral 

 angle with a small tubercle; third row with 5. the fii-st moderately large and 



