Biographies de la nature ; la vie de certains tous les jours les papillons ; papillons ; les sauterelles et les mouches . Voyage de marais à partir de laquelle le caterpillarsseemed à venir. Les rails et les traverses ont été déclaré tobe obscurci de la vue, et le sol et les marécages oneach côté de la piste ont été couverts avec des millions d'thecrushed catei*piliers, et à partir de la masse d'un unendurablestench ont pris naissance. Ces dernières années, il y a eu beaucoup de dis-cussion parmi les entomologistes professionnels comme à Goose15 Nom populaire pour cet insecte. Son nom commun, la livrée des forêts, n'est pas très satisfaisant, les insectes auxquels s sont les li

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Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . trip of swamp from which the caterpillarsseemed to come. The rails and cross ties were said tobe obscured from sight, and the ground and swamps oneach side of the track were covered with millions of thecrushed catei*pillars, and from the mass an unendurablestench arose. During recent years there has been considerable dis-cussion among the professional entomologists as to thebest popular name for this insect. Its common name, forest tent caterpillar, is not very satisfactory, becausethe insects are as likely to be found in apple orchards as inforests, and they do not make tents in the complete sensethat the nearly related American tent caterpillar does.Various substitutes for this name have been recentlyproposed, none of which, how^ever, seem to me sufficientlysatisfactory to warrant a change. Professor M. V. Sling-erland of New York has proposed that the insect becalled the forest tentless caterpillar; but the objectionsto this are, first, that it is not absolutely a tentless cater- 52. A Devastator of Forests. pillar, many of the caterpillars making in early life min-iature tents, like the one shown in Figure 47 ; and, second, as Dr. L. O. Howard has pointed out, there are a greatmany other tentless caterpillars that feed upon foresttrees. Fortunately for man these forest tent caterpillars arepreyed upon by many natural enemies, including insects, spiders, toads, and birds. Among the more importantinsect enemies are the ta-china-flies and the ichneu-mon-flies. In the recentNew England outbreak atleast three species of Tachi-nids ^ were at work destroy- ^ ^ .11 , r , ii Fig. try.—Tachinid Parasite of Forest mor the hosts of caterpillars, r^ ^. , .„ ^ , 0 r lent Caterpillar: a, Viy /;, puparium. One of these flies is repre-sented somewhat magnified in Figure 57 ^: it looks muchlike a common house-fly, and is of about the same size.This fly deposits a whitish ^^^ upon the ski

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