50 



MISCELLANEOUS PAPEES. 



In these collections the percentage of parasitism ranged from to 

 70.3. 



Table X gives the percentage of jiarasitisjn at Hollywood. The 

 average percentage for that locality was only 0.78 + , which seems 

 very strange, as the adult parasite was frequently collected on foliage 

 at that point. However, this low degree of parasitism may have 

 been due to collections made at times when the parasitized material 

 was pupating. 



Table X. — Percentage of parasitism of Ileliothrips/asciatus, at Ilollyivood, Cal., 1911. 



Table XI gives the percentages of parasitism for a number of 

 collections made during August and September, 1911, at Puente. 

 In this locality the parasite was working about as actively as at 

 Compton, and the percentage of parasitism rose as high as 49.5 in 

 one case that was determined. 



At Whittier the host was not abundant, and the one collection 

 made there on August 29, 1911, of 25 thrips larvae, developed para- 

 sitism in two cases, or about 8 per cent. 



