calyx tube almost sessile, prominently ribbed, tetragonal, tapering gradually to 

 the base; operculum smooth, conical, reddish in colour, about one-third as long 

 as the calyx tube. 



Fruit. Urn shape is perhaps the nearest term 

 that describes the form, four to five 

 prominent raised ribs giving it an angular 

 appearance, shining; rim thin, circular; 

 valves deeply inserted ; about 5 lines long 

 and 3 lines wide. 



These fruits are so nearly in shape to those of E. ochro- 

 phloia that it is just possible this may eventually prove 

 to be the southern form of thit species. 



Habitat. Victoria, South Australia, Western Australia. 



REMARKS. At the writing of our first edition, this species had not been placed by us nor was the oil 

 at that Ume obtainable. Recently, Mr. Walter Gill supplied material for this investigation, and so its systematic 

 position now presents no difficulty. 



PLATE XXXI. 



EUCALYPTUS CALYCOGONA. TURCZ. 

 GOOSEBERRY MALLEE. 



[Walter Gill. 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 

 forwarded by Mr. Walter Gill, the Conservator of Forests, South Australia. The 

 material was collected at the Parilla Forest Reserve, South Australia, in 

 October, 1919. The yield of oil was i per cent. 



The crude oil was ot an orange-brown colour, and had an odour similar to 

 those of the cineol-pinene group ; volatile aldehydes were not pronounced. 

 The constituents present were dextro-rotatory pinene, cineol, alcoholic bodies, 

 esters and some sesquiterpene. Phellandrene was not present. 



The crude oil had specific gravity at 15 C. == 0-9152 ; rotation a v + 7-6 ; 

 refractive index at 20 = 1-4659, and was soluble in 5 volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 7-3. After 



