Ill 



to the Mgli ratio for West Australia, which is 1 : 5*3. The 

 relative proportions o£ the species of the two classes is for 

 South Australia 1 : 3 '7, for jNTew New South AYales and North 

 Australia 1 : 3'5, and for Queensland 1 : 3'3 ; falling to 1:3 

 for A^ictoria and 1 : 2*6 for Tasmania. 



The percentages of peculiar species for each colony are : — 



The schematic form of the " Systematic Census" affords at 

 a glance the regional distribution of the species ; and it will 

 not escape notice of the analytical reader that the initial 

 letters S.A. are wanting to bridge over a hiatus in the longi- 

 tudinal range of a few species. Thus there are 21 which are 

 common to extratropical parts of West Australia and corres- 

 ponding regions on the east side of continent, but are absent 

 from South Australia Of these, which are not maritime 

 species of intratropical origin, the following may be expected 

 to occur within the boundaries of our province : — 



1. Species unrecorded for South Australia, though probably 

 inhabiting the more humid parts of the province : — Bcmiinculus 

 liirtuSy Bossicea cordigera, CaJocephalus angianthoides^ Stypandra 

 glauca, Scirpus arenarius, Cliorizandra cymbaria, Isoetes Drum- 

 mondii and PhyUogJossinn Drummondii. 



2. Species unrecorded for South Australia, though probably 

 inhabiting the arid regions of this province, towards the Tropic 

 of Capricorn: — Cassytlmracemosa, DodonceaadenopJiora, Psoralea 

 cinerea, Canavalia ohtusifolia, Acacia ixiopliylla, JLanthosia AtJcin- 

 soniana, Lamlertia formosa, Conospermum stoechadis, Cucumis 

 trigonus, Lindernia (Vandellia) alsinoides, Lippia nodiflora^ 

 Andropogon contortus and A. Halepensis. 



The following species recorded for South Australia in the 

 Systematic Census of Australian Plants are omitted, for the 

 present, by the advice of Baron Sir F. von Mueller, as their 

 occurrence within South Australian boundaries wants confirma- 

 tion : — Stenopetalum rohudum, Hibiscus Huegelii, Securinega 

 Leucopyrus. 



Hibbertia hirsuta, Bentham in Fl, Aust. I., 26. Sandy ground 

 by margin of alluvial flats in the valley of Meadows 

 Creek. Tepper and Tate. 



Capparis lasiantha, E. Brown ; I., 94. Cooper's Creek. 

 Gregory. 



