16 THE REPORT OF THE No. f& 



you to a paper by Dr. Howard in Bulletin No. 30, New Series. U. S. Dep. of Agr. ; one by Dr. 

 Smith Ely Jelliffe in " The Munsey " for August of this year, and one by Dr. Fletcher, No. 3, 

 vol. XXXIII of "The Canadian Entomologist." 



We are beset by these insidious foes ; and those who tell us of the dangers from them are 

 public benefactors. " To be fore-warned is to be fore-armed." 



Flies come from without ; and pains should be taken to keep them without— as may be done 

 by the use of gauze blinds and doors. Those that enter should do so to their destruction. Now 

 that the fly-papers known as " Tangle-foot" are so cheap, and so effective, it ought not to be 

 very difficult to keep the house free from flies. 



Another'subject that should raise the science of Entomology in the estimation of the public 

 is that which may be called Commercial Entomology. And by this I do not mean the traffic in 

 insects between dealers and collectors ; though there are firms both in America and Europe 

 doint' a considerable business in this line. I have the price-list of an English firm before me ; 

 and it is curious to note the amounts asked, per pair, for some of our Canadian insects : — 

 For Papilio Turnus, 3s. 6d. 

 Colias Eurytheme, Is. 

 Arqynnis Atlantis, 5s. 

 Melitoeot, Phaeton, Is. 

 Bemaris Thysbe, 3s. 

 Deilephila lineata, 2s. 

 Sphinx luscitiosa, 8s. 

 S. drupiferarvm, 6s. 

 Ctenucha Vlryinica, 3s. 

 Prionoxydus robinict, 10s. 

 The covers of our Entomological magazines by their advertisements and notices, show that 

 this kind of traffic is widely carried on. 



No, I do not refer to this traffic when I speak of Commercial Entomology ; I refer^ — 

 1st, To the unintentional transportation of insects from foreign lands by shipping, and their 

 trans-continental conveyance by train, etc. 



2nd, To the importation of insects, and insect productions, as merchandise. 

 (1) One night, in August last, my business took me along one of the wharves of the Louise 

 Basin at Quebec. On one side of my path was a long store-house ; on the other was an ocean 

 steam-ship discharging her cargo. The whole scene was brilliantly lighted with arc lights attached 

 to the building. 1 paused under one of the lights to notice the water-flies that had been attracted 

 by it. Besides these, there were a few moths and a number of cockroaches (Blatta m-ientalis, 

 Fischer). The last had, I doubt not, come from the ship. And I- was reminded by them that 

 their species was brought to England by ships trading to the Levant ; and from England they 

 have been sent to many lands. They have of late years become exceedingly numerous in Quebec. 



House-flies have been carried in ships even as far as 

 New Zealand ; and where flies are found, there we may 

 expect to see spiders. So we do not wonder that Henry 

 Christopher McCook writes: — "Some of our American 

 spider species have been imported from Europe, and I 

 have seen them on vessels stowed away in divers crannies, 

 and under sundry parts of the ship."* 



Of imported insects that have made a stir in Canada, 

 Fig. 3. Cabbage Butteifly {Pieris rapce). the Cabbage Butterfly (Fig. 3), the Larch Saw-fly (Fig. 4), 

 the Mediterranean Flour Moth (Fig. 5) and the San Jose scale are examples too well known. 



1 



• Old Farm Fairies. Appendix, Note C, p. 18. 



