APPENDIX. 



3 '"'7 



heads under the marg-in of the protecting scale to get at the soft yellow 

 insect beneath. The larva- of the beetles seem to feed more abundantly on 

 the young scales. Their mode of attacking the older scales was not 

 observed. No eggs of this very useful coccinellid were found, but a favored 

 place of pupation was discovered to be within the calyx of the pears. 

 This cavity is often literally lilled with a mixture of young and old scale 

 insects, and frequently contained full-grown Pentilia larvte, their pupa?, and 

 also freshly issued beetles. (See Fig. 8). 



The fact that this beetle, which is essentially an eastern species, so readily 

 and effectively took hold of this introduced scale, is very interesting, entomo- 

 logically, and. as suggested at the time, would justify an effort to introduce 

 it into southern California. Following up this idea, a considerable number 

 of living and healthy specimens were sent, in May, 181)4, to Prof. C. W. 



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V\^.''iy— Pentilia (Sinilid) niixclla : a. bi'Ctle; 6. larva ; f. pupa; r/, blossom end of pear, 

 .showing scales with lai-^'se and pupie of Pentilia feeding on them, and pupa' of Pen^ 

 tilia attached within the calyx— all greatly enlarged. (Uriginal.) 



Woodworth, at Berkeley. California, who wrote that the insects were 

 received in good condition, and that they had been placed upon a well- 

 infested tree at Oakland, where they could be kept under observation. 

 Since that time, in spite of repeated inquiries, we have been unable to get 

 ^ny information from Professor Woodworth as to the outcome of the 

 experiment. 



Our account of this useful beetle coming to the attention of Mr. J, E. 

 Mclntyre, of Lespe, California, he urged us to procure for him some living 



