APPENDIX. 



715 



order of the order Arachnida, it will be noticed that Thorell 

 regards the Araneina as an order, dividing it into the seven 

 suborders and twenty-two families indicated below. The ar- 

 rangement of these groups is like the branches of a tree, and 

 this represents well the relations of the groups of articulates, 

 as well as other sub-kingdoms. As Thorell remarks : " As 

 regards the larger gi'oups of spiders, the suborders and the 

 families, the reasons for the order of arrangement we have 

 chosen will, w^e hope, easily be seen if one casts one's eye on 

 the accompanying diagram, which gives a view of the con- 

 nection founded on real affinity, which the families of the 

 spiders adopted b}- ns, according to our opinion, have to each 

 other," 



Fig. 668. 



I. Orbitclavise. 



1. Epeiroidae. 

 11. Retitelariae. 



2. Theridioidae. 



3. ScytodoidaB. 



4. Enyoidas. 

 !ii. Tubitelariae. 



5. Urocteoidae. 



6. Omanoidae. 



7. Hereilionidse. 



Phrviioidx 



)piliones. 



8. Agalenoidae. 

 !). Drassoid*. 



10. Dysderoidw. 



11. Filostatoidae. 

 IV. Territelariae. 



12. Theraphosoidse. 



13. Liphistioidse. 



14. CatadysoidaB, 

 V. Lateriffradae. 



15. Thomisoidaj. 



Citigrada!. 

 It). Lycosoidae. 



17. Oxvoiioidae. 

 Saltigradai. 



18. Myniiecionida;, 



19. Otiotliopoidw. 

 •20. Dinopoida;. 



21. Eresoid*. 



22, Attoidse. 



