Australian and Tasmanian Scydmaenidae. 2(»1> 



fourth segment iippears bifoveate, with the teeth marking the boun- 

 daries of the foveae; looking at them, from the direction of tlie 

 head they appear as three rather acute teeth; from some directions. 

 they appeal- as slioi-t acutL'ly tciininated ridges, on the same phme 

 as the base of the segment. 



The seventli joint of the antennae is slightly larger than tlie sixtli, 

 and conspicuously smaller than tlie eighth, the eighth, nintli and 

 tenth are each sliglitly dilated to tlie apex, the eleventh is sliglitly 

 longer than the ninth and tenth combined. The basal prothoracic 

 foveae and the connecting impression are somewhat variable, the 

 foveae sometimes are rather large, shallow, and two in number, 

 with the connecting impression rather feeble. On other specimens, 

 the impression appears more distinct, and with two or four foveate 

 expansions. It is connected on each side with a longitudinal 

 impression that is quite invisible from above. 



One of the Hobart specimens has the elytra darker than the 

 others, and with a faint infuscation along suture. The Swansea 

 ones are also so coloured. Two females from Cunnamulla .(Qld.), 

 taken by Mr. Hardcastle, appear to belong to the species, but are- 

 of a rather light castaneous, with the elytra still paler. A speci- 

 men from South Australia, in the Macleay Museum, appears to. 

 belong to the species, but is abraded; and, as it is somewhat dirty, 

 I have not been able to examine it satisfactorily. 



Scydmaenus tridentatus, n.sp. 



J' Bright castaneous, head and prothorax somewhat darker tha^j 

 elsewhere, tarsi and palpi flavous. Clothing much as in preceding 

 species. 



Head moderately transverse, very feebly bilobed between an- 

 tennae, with two very indistinct impressions close to each eye. Eyes-, 

 small and prominent. Antennae slightly shorter, but otherwise 

 much as in preceding species. Prothorax lightly transverse; base 

 foveate and transversely impressed. Elyfro moderately wide, and 

 gently convex, base distinctly wider than prothorax, sides regularly 

 rounded and widest just before middle. Abdomen with fourth 

 segment armed. Legs rather long; front coxae rather di.stant; 

 femora stout, especially the front pair. Length, If mm. 



? Differs in having the antennae shorter, front femora not quite 

 so stout, and abdomen unarmed. 



Hah. — W. Australia : Swan and Vasse Rivers. (A. M. Lea.) 



