64 REVISION OF THE AMYCTERIDES, vi., 



ed, the hinder ol the two long and spiniform, in the reduotion of the posterior 

 lateral lubercle lo a short conical spicule or granule, ami in the small degree of 

 development of the elytra! spines. 



A. TATEi Blackb. — Rostrum with lateral margins raised in a slight angle an- 

 teriorly; supraorbital crests strongly developed, the anterior ramus projecting for- 

 wards and suddenly turned up at apex, the posterior projecting upwards and 

 backwards, then suddenly bent backwards to apex. 



llab. — Central Australia: Charlotte Waters. 



Var. TEXXASTEX.SIS Ferg. — Rostrum iis in tatei; supraorbital crests shorter, 

 the rami slxirt and rather stumpy, the posterior somewhat the longer, not suddenly 

 bent backwards at apex. 



Hab. — Central Australia: Tennants Creek; N. Territory: Alexandra. 



Var. MtJBCHisoNi, n.var. — Larger than .1. tatei, rostrum slightly longer, ex- 

 ternal margins not raised, and very obtusely augulate; crests well developed, the 

 rami strong, the posterior nmch the longer, evenly curved upwards and back- 

 wards to apex. Antennae with fii-st joint of funiele longer than second, all joints, 

 noticeably the first and secoml, longer than corresponding joints in tennantensis. 

 Elytra more elongate, but sculpture as in tennantensis. Dimensions: c?. 17 X 7 

 mm. ; 9. 18 X 8 mm. 



Hab. — Western Australia: Ankertell (H. W. Brown). 



This form might perhaps be granted specific rank, on account of the differ- 

 ences in the rostrum and antennae. 



All the above forms have very similar clothing; the upper surface is densely 

 covered with sandy or yellowish-brown, nan-ow, decumbent subpubescence, with 

 traces of white vittae on prothorax and maculae on elytra; the sides of prothorax 

 and lower margins of sides of elytra are densely clothed with white flattened 

 squames. 



Var. ARINTARUM, u.var. — <?. more sparsely clothed with shorter pul)e.seenee, 

 more evidently maculate with white on elytra and sides. 



Rostrum rather deeply excavate above, the sides raised anteriorly into an 

 acute angle. Supraorbital crests similar to murchisoni. but smaller and more 

 slender. Antennae with first two joints of funiele longer than in teiiiiaiitenfnf^, 

 but shorter than in 7nurc}iit<oni, the whole antenna rather more slender. Elytra 

 with spines rather larger and more closely set. 



?. Differs also from 9 of tennantensis and murchisoni in having no tubercles 

 on the second interstice. Dimensions: c?. 14.5 X 5.5 mm.; 9. IC X 7 nun. 



Hab. — Central Australia: Alice Springs. 



Types in National Museum, Melbourne. 



This form .should also perhaps l)e given specific rank. l)ut it cannot be regard- 

 ed as conspecific with murchisoni except by regarding lioth as varieties of tatei. 

 The difference in the rostrum is alone sufficient to distinguish them ; the supra- 

 orbital crests in anintanim show much less outward inclination, when viewed 

 from in front, than tliey do in murchisoni. 



ACAXTHOLOPIIUS TRA(;OCEPHALUS, U.sp. 



d". Small, elongate, narrow. Black: densely clothed with cinnamon brown 

 subpubescence, with a narrow median vitta .ind interrupted vittae along the inner 

 sides of the rows of tubercles on the elytra of a ligliter colour; sides of prothorax 

 and lower border of sides of elytra with white scjuames; ventral surface with 

 sandy, almost golden, squames, thickly but somewhat irregularly disposed. 



