42 REVISION OP THE AMTCTERIDES, vi., 



the apex directed upwards and backwards; crests, as viewed from in front, 

 showing considerable inclination outwards. Rostrum much as in A- spinifer Macl. 

 but internal ridges slightly less convergent at base. Antennae of moderate 

 length, comparatively stout, second joint of funicle longer than first; club rather 

 briefly obovate. Prothorax (4X5 mm.) much as in A. spinifer, but tubercles 

 smaller; median area with deep linear impression in centre not reaching base or 

 apex; median tubercles with first two conjoined to form a ridge, the central ones 

 forming a group of 3 or 4, hai-dly larger than granules, and a moderately large 

 obtuse tubercle posteriorly, slightly backwardly projecting, but not fonning an 

 oblique ridge as in A. spinifer; lateral tubercles trianguliform, the two anterior 

 completely conjoined, the posterior distinctly .smaller. Elytra (9X6 mm.) with 

 seriate punctures small and shallow, the granules iueonspicuons; fii-st row of 

 tubercles 7 — 8 in number, the basal 4 — 5 slightly elongate, small, hardly raised, 

 the last 2 — 3 conical, becoming progressively larger and more acute, ending on 

 edge of declivity ; second row with 4 — 6 tubercles, larger and more acute posterior- 

 ly, outwardly projecting; third row with 4-eonical outwardly projecting tubercles, 

 the humeral one distinctly smaller than the other 3. Sides with a single row of 

 granules on each of the upper two interstices. Under surface moderately closely 

 setigero-punctate, the setae strong, the punctures rather shallow, somewhat more 

 rugose on apical segment. Legs simple. Dime-nsinns: S. 14 x Q T^m. 



Hab.—N.S. Wales: Waleha Road. 



A very ordinary looking species of the marshami group, the structure of it.? 

 crests showing a rather faint approach to the triramate crests of A. tridentatus; 

 this is perhaps seen best when the head is viewed from in front. On one elytron 

 the apical tubergle of the second row descends to a more posterior level than tliat 

 of the first row. In the sculpture of the outer surface of the mandibles, this 

 species agrees with A. tridentatus and differs widely from A. spinifer and its 

 allies. In the latter this surface, external to the smooth inner mai-gin, is strongly 

 rugulose, the inner ridges being arranged in parallel series, and the spaces be- 

 tween the rugulose ridges bear long setae; in ,1. subtridentatu--^ the surface is dis- 

 tinctly setigero-punctate, and the intervals between the punctures, apart from be- 

 ing less raised and rugose, are covered with inucli smallei- punctures. 



AcANTHOLOPHUS SCABKOSU.S Macleav. 



Macleay, Trans. Ent. Soc. N.S. Wales, i., 1865, p. 287. 



d". Allied to A. marshami Kirby, but readily distinguisljed by the tibial 

 structure. 



Clothing minute, inconspicuous, brown, changing to grey on iiuier surfaces 

 of elytral lubei-eles. 



Head and rostrum much as in ,1. marshami, the supraocular crests large, with 

 the anterior ramus strongly convex anteriorly, pointed at apex, and the postei'ior 

 ramus more strongly produced, projecting upwards; external rostral margins 

 acutely angulate in middle. Antennae rather long, first joint of funicle shorter 

 thar* second, club pedunculate. Thorax similar to .1. marshami. Elytra with a 

 row of graules on second interstice, as well as on first at base; tubercles ratlier 

 larger than in A. marshami, firet row with 7, the last 3 conical; second row with 

 7 ; third row with a rather large humeral tubercle followed by 4 conical ones. 

 Under surface nitid, punctures small and discrete on intermediate segments, larger 

 and semi-confluent or confluent on apical segment. Legs with intermediate tibiae 



