1908.] PUBLIC DOCUMENT No. 73. 189 



common occurrence to see large gypsy moth caterpillars drop 

 to the ground under the trees with the Calosomas firmly attached 

 to them. In the " plantings " of this beetle in 1906 the insects 

 were carefully marked, by Dr. Howard's direction, with white 

 enamel paint. This year in the same localities several bright, 

 fresh-colored specimens, without paint marks, were taken feed- 

 ing eagerly on the gypsy moth caterpillars, while later numerous 

 larvae or young of the beetles were so found, thus showing that 

 this valuable check on the larvae had become well established in 

 many localities. In addition to this, a large number of species 

 of every parasitic form has been liberated, and we have reason 

 to believe that several of them have now become established. 



In order to give an adequate idea of the scale on which this 

 work has been conducted, the following summary of the ex- 

 penditures by the State of Massachusetts for this purpose dur- 

 ing the period covered by this brief report, June 1, 1905, to JSTov. 

 30, 1907, will be of interest: - 



Receipts. 



Appropriations, 1905, . .... $10,000 00 



Appropriations, 1906, 10,000 00 



Appropriations, 1907 25,000 00 



$45,000 00 



Expenditures. 



Wages of employees, $8,902 50 



Travelling expenses, 3,805 80 



Rent, 746 00 



Supplies, .... 2,442 18 



Stationery and postage, . . 68 37 



Services of experts, 2,116 28 



Sundries, ..... . 1,001 33 



Importation of parasites, .... 15,591 66 



34,674 12 



Balance Nov. 30, 1907, . $10,325 88 



In spite of all the thought, energy and skill that have been 

 brought to bear on this most important problem of introducing 

 the natural enemies of the moths, - - a problem entirely novel 

 in the field of entomology, - - it was apparent during the winter 

 of 1906-07 that several of our influential citizens had expected 

 immediate results from the importation of the parasites, and 



