512 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL.84 



nidis) of the larch sawfly (Nematus erichsonii). Hewitt came to 

 Canada in September, 1909, to succeed the late James Fletcher, and 

 finding that the larch sawfly was very injurious in Canada, he made 

 arrangements to import parasitized cocoons from the English lake 

 district into Canada. Cocoons were brought over in the spring of 1911 

 and distributed in several localities in Quebec and Ontario, a small lot 

 being also sent to the State Entomologist of Michigan. In 1912, 

 Doctor Hewitt visiting England found a locality where the parasites 

 were very abundant, and he had other supposedly parasitized cocoons 

 brought over and distributed in Manitoba in two tamarack swamj)S 

 in a forest reserve. In 1916 it transpired that the parasite had become 

 satisfactorily established, and later reports by Mr. Norman Criddle 

 of Manitoba have indicated that the parasite has been a very great 

 success. 



CEYLON 



In 1918 there was a serious outbreak of Icerya purchasi on Acacia 

 in the Dimbula district in Ceylon. Novius cardinalis was received 

 from South Africa, but on account of the length of the journey the 

 beetles and larvae died, and the outbreak of the scale was suppressed 

 by mechanical means. In 1920 J. C. Hutson reported that the Novius, 

 after the failure of four consignments from South Africa, finally in 

 1920 took hold and bred rapidly with great success against the Icerya. 



CHILE 



Prospaltella berlesei was imix)rted direct from the United States 

 into Chile in 1914 and was as successful there against Diaspis lanata 

 as it was in other South American countries. 



The Eucalyptus weevil (Gonipterus) was accidentally introduced 

 into Chile at an unknown date. In 1928, C. A. Marelli, in an article 

 published in the Revista Chilena Historia Natural, announced the 

 importation of a Mymarid egg-parasite from South Africa to which 

 place it had been introduced from Australia. 



DUTCH EAST INDIES 



We have elsewhere described the visit of L. P. de Bussy to the 

 United States in 1911. His principal object in coming over was to 

 secure parasites of Chloridea (Hcliothis) obsolcta which was doing 

 great damage to the tobacco plantations in Sumatra. In 191 2 the first 

 report on the work of the parasite was printed. Parasites were sent 

 over in the eggs of the host insect in cold storage, and only a very 

 small percentage failed to hatch. At the time of the first report in 191 2 



