BY E. W. FERGUSON. 769 



type, the relative numbers in the three specimens are shown 

 below : — 



Interstices. 

 2. 3. 4. 5. 6. 

 (l).Type... 3-5 11-12 2 9-0 9 



,2) Q iQ 5.g g.|Q jQ (Tubercles slightly smaller; intra- 



^ strial granules more evident. 

 (3). ... 4-5 9-10 2-3 9-10 8 Tubercles somewhat larger. 



Other sjjpcips belonying to (rvoup ii. 



S. Dixoni Ferg. — Victoria : Ouyen, Kow Plains. 



S. Goudiei Ferg. — Victoria: Birchip. 



iS'. occidentalis SI. — W.A. : Upper Mnrchison (type), Keller- 

 berrin. 



S. angustipennis SI. — W.A. : Frazer Range (type) : South-West 

 Australia. Two specimens, in my collection, labelled S.W. Aus- 

 tralia, are larger than the types and more elongate ; I do not think 

 they are specifically distinct. 



S. Elderi SI. — The range of this variable species is from South 

 Australia to the Murchison in Western Australia. I have records 

 of the following localities: Everard Range (type), Fowler's Bay, 

 Streaky Bay, Ouldea, Gawler Ranges, Overland Railway (20 

 miles E. of Kyehering Soak), Cue (Murchison District). 



S. amycteroides Ferg. — Victoria: Portland. 



S. noctis SI. — Central Australia: Barrow Range. 



S. convexus SI. — Central Australia: McDonnell Ranges. 



S. convexus SI., var. Spenceri Ferg. — Central Australia: Oul- 

 dea to Talarinna, Deering Creek, Hermannsburg. 



5'. insignis SI. — Central Australia (Elder Expedition). 



Cfroup in. 



Fifth interstice continuously tuberculate ; third interstices not 

 approximated on the declivity; middle tibiae simple. 



This group has been formed for the reception of a few species 

 which occur along the highlands of Queensland and New South 

 Wales. Two other species have been included — S. bubalus from 

 Tasmania, Victoria, and South Australia; and S. dilaticollis from 

 Victoria — which present the above characters, but which differ in 



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