25 



is that ascospores are not as sticky as pycnospores, and would 

 therefore not adhere so well to the body of the beetle. It is 

 possible that the insects would have carried a larger number 

 of ascospores had they been taken just after a rain, for four 

 of the twelve insects which had run over active perithecia in 

 the laboratory and insectary yielded positive results. This 

 possibility, however, will appear less likely when we reason 

 by analogy with the results obtained from the birds (21), for 

 not a single ascospore was found in the sediments from the 19 

 birds yielding positive results, although many of them had been 

 shot just after rains. 



TABLE IV. 



RESULTS OF MICROSCOPIC EXAMINATION OF CENTRIFUGED 



SEDIMENTS. 



Kind of spores as shown by microscopic examination of sediments. 



1-33 





Sediment not retained. 



34-35 



0 



Examination not necessary. 



36 



249 



Pycnospores present ; no ascospores. 



44 



145,340 



Pycnospores very abundant; 9 ascospores. 



45 



6,715 



Pycnospores abundant; 3 ascospores 



46 



0 



Examination not necessary. 



i'l 



168 



Pycnospores present ; no ascospores. 



48 



lOO 



Pycnospores present ; no ascospores. , 



49-50 



0 



Examination not necessary. 



51 



462 



P.ycnospores present ; no ascospores. 



52 



0 



Examination not necessary. 



53 



151 



Pycnospores present ; no ascospores. 



54 



4,792 



Pycnospores easily found ; no ascospores. 



55-62 



0 



Examination not necessary. 



63 



200 



Pycnospores present ; no ascospores. 



64 



8,538 

 ICO 



Pycnospores abundant; 2 ascospores. 



65 



Pycnospores present ; no ascospores. 



66 



1,0'98 



Pycnospores present ; no ascospores. 



67 



lOO 



Pycnospores present; no ascospores. 



68 



50fl' 



Pycnospores present ; 1 ascospore 



69-70 



0 



Examination not necessary. 



71 



840 



Pycnospores present ; 2 ascospores. 



72-74 



0 



Examination not necessary. 



75 



300 



Pycnospores present ; no ascospores. 



o =8 



tc M to 



O »-i <u 



W S 



