468 PUCCINI A ON GROUNDSEL, 



and constant observation of the exceptional forms of spores, just 

 as the methodical investigation of exceptional forms of plants 

 or animals may throw light upon the origin of certain phases of 

 life and show that what is abnormal and exceptional at one stage 

 and under certain surroundings, may become the normal under 

 different conditions of existence. 



EXPLANATION OF PLATES. 



Puccinia on (Iroundsel. 



(All figui'es except figs. 7 and 10 magnified 600 diameters.) 



Plate xxxiv. 

 Fig. L — Various shapes and sizf^s of aecidiospore. 

 Fig. 2. — Various forms of teleutospore. 

 Fig. 3. — Group of teleutospores. 



Plate XXXV. 

 Fig. 4. — Unicellular spores. 

 Fig. 5.— Three-celled teleutospore. 

 Fig. 6. — Aecidiospores. 

 Fig. 7. — Teleutospores ( x 115). 



Plate XXXVI. 



Fig. 8. — Teleutospores. 



Fig. 9. — Group of teleutospores. 



Fig. 10. — Unicellular spore : the same ( x 115). 



Fig. 11. — Tricellular spores. 



CATALOGUE OF THE DESCRIBED COLEOPTERA OF 

 AUSTRALIA. SUPPLEMENT, PART I. CICINDE- 

 LID^ AND CARABID^. 



By George Masters. 



Issued separately as a Supplement to the Part. 



