Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . ementof the groups of spiders given by me is very imperfect. Itherefore present the following classification of Dr. T. Thorell(On European Spiders. Part I, 18G9-70) as the most satisfac-tory. While I have considered the Araneina as forming a sub- e> APPENDIX. 715 order of the order Arachnida, it will l>e noticed that Thorellregards the Araneina us an order, dividing it into the sevensuborders and twenty-two families indicated below. The ar-
Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . ementof the groups of spiders given by me is very imperfect. Itherefore present the following classification of Dr. T. Thorell(On European Spiders. Part I, 18G9-70) as the most satisfac-tory. While I have considered the Araneina as forming a sub- e> APPENDIX. 715 order of the order Arachnida, it will l>e noticed that Thorellregards the Araneina us an order, dividing it into the sevensuborders and twenty-two families indicated below. The ar-rangement of these groups is like the branches of a tree, andthis represents well the relations of the groups of articulates,as well as other sub-kingdoms. As Thorell remarks: Asregards the larger groups of spiders, the suborders and thefamilies, the reasons for the order of arrangement we havechosen will, we hope, easily be seen if one casts ones eye onthe accompanying diagram, which gives a view of the con-nection founded on real affinity, which the families of thespiders adopted by us, according to our opinion, have to eachother. Fig. C(£.. Plirynoiilsc. i. 1. Retitelariae. 2. Theridioidae. 3. Scytodoidsc. 4. Tubitelariae. 5. Urocteoida1. 6. Omanoidij-. 7. Ilersilionidre. Upiliones. 8. Agalenoidse. 9. Drassoidae. 10. Dysderoidse. 11. Territelariae. 12. Tlieraphqsoida1. 13. Liphistioidae. 14. Laterigradse. 15. Thomisoidae. vi. lf>. Lyco^oiihi. 17. Oxyopoifla;.vii. Saltigradie. 18. Myrmecionidao. 19. OtiothopoidaB. 20. Uinopoidaj. 21. Eresoida1. 22. Attoida;.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects
