Classijication of the Spiders. 325 



attributed too much importance to characters derived from the 

 structure of some of the internal parts, especially the trachese. 

 It would of course be out of place to discuss here the 

 value and systematic position of the different spider-families 

 proposed of late years, and still more so to make any attempt at 

 a complete classification of the Spiders, with an enumera- 

 tion of all the different families and their characteristics ; 

 for such an attempt it is necessary to possess far richer 

 materials, collected in all parts of the world, than are at 

 my disposal. With the modifications for which we are in- 

 debted to Bertkau, and with those which I have permitted 

 myself here to propose, the principal traits of the classification 

 which, I think, would answer to our present knowledge of 

 this Order of animals may, however, be seen from the follow- 

 ing scheme, in which I have included as examples, besides 

 the (recent) European families, only a few exclusively exotic 



Ordo ARANE^. 



Subordo I. Tetrapneumones. 



Tribus I. Tereitelaei^. 



Fam. 1. Liphistioidse. 



2. Theraphosoidae . 



3. Atypoidse*. 

 &c. 



Subordo II. Dipneumones. 



Tribus II. Tubitelari^. 



Eci'ibellatce. CrihellatcB. 



Fam. 1. Dysderoidse. 



3. Palpimanoidfe. 



4. Myrmecioidse. 



6. Drassoidaj. 



7. Argyrouetoidse. 



8. A<?alenoid£e. 



11. Zodarioidse. 



12. Hersilioidse. 



14. Urocteoidse. 



Fam. 2. Filistatoidae. 



6, Zoropseoidaj, 



9. Dictynoidse. 

 10. Eresoidje. 



13. (Ecobioidae. 



&c. 



* The denominations Atypoida^, Epeiroidse, and Tbomisoidae ought to 

 be changed (see Thorell, " Studi sui Kagni Malesi e Papuani. IV. Ragni 

 deU' Indo-Malesia," he. cit.). That in the names of tlie faujilies the termi- 

 nation -oida, which was used b}^, for instance, Cuvier, is preferable to -idee, 

 I have shown in ' Remarks on Syn.' p. 690, as also in " Descrizione di 

 alcuni Aracnidi inferiori dell' Arcipelago Malese,' in Annali del Museo 

 Civico di Storia Nat. di Geneva, xviii. p. 35 (19; (1882). 



