1906.] PUBLIC DOCUMENT No. 73. 123 



on an average each day 4 nearly mature gypsy moth larva?. 

 Material at laboratory. 



2. Received July 26, 1905, from Dr. Gustavo Leonardi, 

 24 boxes, containing: 727 gypsy moth pupa 1 ; 221 gypsy 

 moths; 394 dipterous pupae; 73 Qhalcis flavipes ; 18 dead 

 Tachinids ; 3 live beetles ; 6 dead beetles ; 37 dead Calo- 

 somas; 5 Apanteles cocoons; 2 dead Theronia; 3 Forficulas. 

 Thirteen specimens of Chalcis flavipes emerged from the 

 gypsy moth pupa? within three days after the arrival of the 

 shipment, and 9 others emerged from the dipterous pupa?. 

 All the Chalcids were placed in a large jar, together with 

 food and gypsy moth larva?. Although constantly watched, 

 they were not seen to mate or lay eggs. By the end of a 

 week they were all dead, and were placed in the collection 

 together with the rest of the miscellaneous material noted in 

 the table. The "live beetles " and "dead beetles " of the 

 table were not Calosomas. 



3. Received Aug. 1, 1905, from Dr. Gustavo Leonardi, 

 7 boxes, containing : 46 gypsy moth pupa? ; 91 dipterous 

 pupa? ; 41 Calosomas. Material at laboratory. 



Aside from the 32 specimens of Chalcis flavipes which 

 emerged from the second shipment, there were no further 

 developments. 



The Italian shipments were rich in the number of very 

 large Tachinid pupa? which they contained. Of these great 

 hopes are entertained, for the flies will probably emerge 

 next spring. 



While in Europe Dr. Howard discovered that the winter 

 webs of the brown-tail moth were often extensively in- 

 fested by certain minute parasites which destroyed the im- 

 mature caterpillars. In this country as yet no parasites 

 have been found attacking the caterpillars in their winter 

 webs ; and, appreciating at once the importance of import- 

 ing these beneficial insects, Dr. Howard arranged for the 

 collection and shipment of a large number of the winter 

 webs of the brown-tail moth from various points in Europe. 

 As a rule these sendings have arrived in good order, and 

 we are hopeful that they will yield numerous parasites next 

 spring. Up to December 15 the following consignments 

 have been received : 



