46 REVISION OF THE AilYCTERIDES, \-i., 



being a member of the first section of the genus- I do nut know of any other 

 species to which it can be regarded as closely related. 

 Hab — South Australia : Kangaroo Island. 



ACANTHOLOPHUS SQUAMOSTJS Macl. 



Macleay, Trans. Ent. 8oc. N.S. Wales, i., 1865, p. 287; A. sublubatus, Macl., 

 (partim) op. cit. 1866, p. 3li9. 



(?. Small, elongate, elytra not greatly wider thau prothorax- Black; rather 

 scantily clothed with grey depressed subpubesceuce. 



Head concave in front; intercristal ridge low but distinct; supraorbital crests 

 large, the anterior end rounded, projecting downwards and forwards, the posterior 

 pointed, projecting upwards and backwards, the free border dentate in middle, 

 so that crest appears to comprise three lobes. Rostrum with external margins 

 strongly raised and convex in middle, sinking down to base; internal ridges dis- 

 tinct; basal foveae deep, their circumference broken externally. Antennae with 

 first joint of fuuicle shorter than second; club stout, hardly pedunculate. Pro- 

 thorax with median area lineai-ly impressed in mid line, with a few granules, sub- 

 median tubercles low, granulif orm, not set in a straight line ; lateral tubercles 

 trianguliform, the anterior completely united to middle, the posterior somewhat 

 smaller. Elytra with regular rows of small, distinct punctures the interstices 

 hardly granulate, except laterally; with three i"ows of tubercles, first row with 

 tubercles obsolete excepting last two, the last large and conical, situated on edge 

 of declivity; second row with 3 — 4 tubercles, nodular at base, conical towards 

 apex, not present near base, and ending anteriorly to apical tubercle of first row ; 

 humeral tubercle small, nodular, conjoined with first of third row; third row with 

 two tubercles, the second the larger and more outwardly placed. Venter flat 

 with scattered, long, black setae, the extreme apex somewhat depressed, and with 

 denser and shorter setae. Intermediate tibiae without a subapical notch. 



$. Differs in its broader, more ovate elytra, rather strongly produced at 

 apex and separately or conjointly mucronate; crest similar but anterior lobe rather 

 shorter and more obtuse; elytra with low noduliforra elevations in the basal 

 portions of the rows of tubercles, these sometimes obsolete as in male; venter 

 feebly convex. Dimensions : d". 11 X 3.75 mm.; 5. 13 X 5 mm. 



Hab. — Victoria : Wandin, Merriyan, Emerald, Narbethong. 



Closely allied to A. nanus but se)iarated by the smaller and less numerous 

 elytral tubercles; in A. squamosus the apical tubercle of the first row is the 

 largest, whereas in A. nanus the penultimate is the largest and the apical is at a 

 lower level. In both species there are 4 tubercles in the second row, but in A. 

 nan7is the first is near the second of the third row, whereas in A. sqnamosus it is 

 much |)osterior to it. The apex of the elytra in A. nanus is more produced, and 

 the. apices separately mucronate, with a rather deep notch between; in .1. squa- 

 mosus the notch is smaller and the apices not definitely mucronate- 



ACANTHOLOPHUS NANUS, U.Sp. 



c?. Small, elongate. Black; densely clothed with brown sul)pul)escence, tri- 

 vittate on prothorax and transversely i|uadrifa.sciate on elytra with grey; pos- 

 terior fi'iuora subannulate with grey near apex. 



Head widely concave in front, with two small, rather widely separated, 

 granules above; intercristal ridge present, low in centre; suiiraorl)ital crests l.irge. 



