Australian and Tasmanian Ilorddlidm. 



apex of prothorax witli an indistinct grey margin, across middle with 

 four or six greyish-wliite spots (very distinct from some directions, 

 but indistinct from others) ; scntellum, base of aculeus, sides and 

 middle of basal segment of abdomen, and mesosternal episterna with 

 silvery pubescence. 



Aculeus short and stout, strongly diminishing in width to near 

 apex, which is very decidedly truncate. Posterior spurs unequal, 

 the longest less than half the length of the first tarsal joint. 



Length 5-8 m.m. 



Hah. W. A. : Pinjarrah. 



Closely allied to T. afcrriwM, but the clothing of the 

 upper surface is not entirely uniform. 



MORDELLISTENA CONCOLOR, n. sp. 



Piceous-black ; posterior spurs testaceous. Clothing of an uniform 

 and dm<yj greyish or brownish-black. 



Aculeus long, thin and regular, the apex very acute. Posterior 

 tibia? with one feeble and two very distinct oblique ridges ; spurs 

 decidedly unequal in length, tbe longest less than half the length of 

 first tarsal joint. 



Length 3| m.m. 



Rah. W. A. : Geraldton. 



In appearance, except that it is narrower, remarkably 

 close to Morddla haldiensis. It is the first black species 

 of its o-enus to be recorded from Australia. 



