BY EUSTACE W. FERGUSON. 45 



Head with deep depression behind iutercristal ridge, the latter strongly 

 raised; supraorbital crests subcylindrieal projecting forwards and upwards, the 

 apex almost truncate, with the posterior angle continued upwards and back- 

 wards in a short point. Rostrum widely and moderately deeply concave in front; 

 the external margins strongly raised and convex, somewhat obtusely angulate 

 anteriorly, sinking to base; internal ridges raised; basal foveae rather large. An- 

 tennae comiiaratively slender, funicle with first two joints subequal. club stout, 

 liardly pedunculate- Prothorax considerably narrower than elytra, median area 

 with a depression in front of middle, and with some obscure granules in centre; 

 subnieilian tubercles raised, though not very large, the tii'st produced in a short 

 ridge, the third erect, obtusely conical, followed by two or three, more trans- 

 versely arranged, the penultimate tubercle larger, projecting backwards; lateral 

 tubercles triangulifonn, the median distinctly the largest, with a smaller one 

 conjoined anteriorly, the posterior smaller and more obtuse. Elytra more or 

 less distinctly tlatteued along suture; punctures and granules fairly definite and 

 regular: with three rows of spiniform tubercles, first row with about 8, the basal 

 ones small and granuliform, becoming somewhat larger posteriorly, the last 3 

 acute conical spines; second row with 5 — 6 all conical tubercles, but the posterior 



ones larger and more acute, ending about the same level as first row; humeral 



tubercle moderately large conical, projecting forwards and slightly outwards; 



third row with 4 outwardly projecting tubercles, the fii'st very large, the othei-s 



becoming )irogressively smaller. Venter very feebly convex from side to 



side, the apical segment practically flat, without any impression, set with black 



decumbent setae. Legs simple. 



V. Larger and more broadly ovate; the elytra broader with a transversely 



wi'inkled sculpture, the tubercles smaller and less acute; the venter more convex 



Dimenfiions: <S. 12 X 5 mm.; $. 14 x 6 mm. 



Hab. — N.S. Wales: Merimbula, Blue Mts., Sydney, Gosford. Newcastle, 



Richmond River. 



I have examined the types (c?. ?.) of A. squalidus Mael., and compared them 



with the type (t?) of A. trmicalicornis Macl-, but cannot find any difference. 



The species is widely distributed along the coastal districts of N.S. Wales, 



pnd is not uncommon at Blackheath on the Blue Mountains. 



The species does not appear to be closely related to any other known to me; 



the narrow erect crests separate it from the allies of .1. murshami, while the flat 



abdominal segments exclude it from the adelaidae gi'oup. ^1. foveirostris, with 



which it is associated in the table, is a very different species, the similarity in 



the crests having led to their present grouping. 



A female taken at BerowTa, near Sydney, shows a curious abnormality in 



the shape of a median horn or tubercle projecting from the forehead. 



AcAXTHOLOPHUs FOVEIROSTRIS Lea. 



Lea, Mem. Sdc. Entom. Belgique, sviii., 1910, p. 85. 



In the shape of the prothorax this species shows an approach to .1. denticollis 

 Macl., to which Mr. Lea regarded it as related. I cannot, however, consider that 

 the resemblance is any indication of its true relationship. The conspicuous inter- 

 cristal ridge separating the head and rostrum, the stnicture of the rostrum and 

 the prothorax produced above the head with evident ocular lobes, all point to its 



