BT THE INTRODUCTION OF PARASITES. 



skiu, which may be moulted intact ; (3) moulting of the eggs with the skin ; 

 (4) faihu'e of the hirva to penetrate. 



A full account is given of the methods adopted for importing and handling the 

 enormous numbers of eggs and caterpillars of the two moths which were needed 

 in order to rear a good stock of parasites. Each species of parasite is then dis- 

 cussed in detail, and this section contains a mass of interesting and useful 

 information respecting the individual species studied. 



The following tabulated statement will give some idea as to the measure of 

 success which has attended these attempts at colonisation. 



Parasites of the Gipsy Moth. 

 Egg Parasites (Hymenoptera). 



Aiiaslutiis bifasciutas, Fonsc. Apparently well established. 



., , ,. , TT r Establishment very douljtful on account 



otiiedins kuoaiiue. Mow. -! . ^ . 



(. of climatic conditions. 



Larval Parasites (Hymenoptera)- 



, , , ^ , . TT 1 f Establishment doubtful on account of 



Aijuiiteles fuloipes, rlai. A ^ , ,■ , i 



(. lack of proper alternate hosts. 



Larval Parasites (Tachinidae). 



Compsiluru co/icinnata, Meig. Apparently established. 

 Blepkuripa scutellata, li. D. Establishment confidently expected. 

 Carcelia gnavu, Meig. 



Zyyvhuthria yilva, Hartlg. 

 Tricliolygu (jrandis, Zett. 

 Parasetigeiia seyregata, Roud, 

 Tacluna larvarum, L. 



,, japonica, Towns. 

 Crotisocosmia spp. 



Pupal Parasites (Hymenoptera). 



Moiuiduntomerus aereus. Walk. 



Pimpla examinator, F. 



„ instigator, F. 

 Chalcis obscurata, Walk. 



„ Jlavipes, Panz, 



Predaceous Beetles. 



Calosoina sycuphaatu, L. 



Establishment hoped for. 



Establishment doubtful. 



f Firmly established and dispersing at a 

 I very rapid rate. 



Establishment doubtful. 



f Firmly established ; increasing and 

 \ dispersing rapidly. 



Parasites of the Brown-tail Moth 

 Egg Parasites (Hymenoptera). 



Trichogrammu spp. I 



Telenomus pludaenaruiit, Nees. j 



Establishment probable ; not 

 important. 



