604 



place to be in the proximity of the Agalenoidce , with which, accor- 

 ding to Cambridge, it is allied. According to this author, Rhium 

 shows relationship also to Uloborus and Miagrammopes. 



The arrangement I have given of the sub-order 2erritelari(e , 

 is now, since the publication of Ausserer's valuable work, 'Die 

 Arachniden-Familie der Territelarise', quite antiquated. Ausserer in- 

 deed preserves the families formed by me, Theraphosoidce, Liphisti- 

 oidce and Catadysoidce , but resolves the first-named family into a 

 large number (45) of genera and sub-genera. The llieraphosoidcs are 

 divided into three sub-families: Atypince, with six mamillse and the 

 palpi inserted on the side of the maxillae; Eriodontince , with the 

 palpi inserted in the same manner, and four mamillse; and Thera- 

 phosince, with four mamillse and the palpi inserted at the apex of 

 the maxilla?. The European genera acknowledged by Ausserer as 

 belonging to the Theraphosince , may be distinguished by means of 

 the following scheme (where no notice is taken of the exotic genera): 



A. Three tarsal claws. 



a. Head high, rising rapidly from the thorax. Centre fovea 

 of the cephalothorax w-shaped, open in front (yEpycephali 

 Auss.). 



a. Mandibles drawn out into a toothed point. Tarsi armed 

 with spines, without scopula in ?. 



1. The four lateral eyes form a rectangle, the height of 

 which is scarcely = one third of its base (breadth) . . . 

 Cyrtocarenum Auss. 



2. The four lateral eyes form a trapezium, of which the 

 height is = half the base Cteniza (Berth.). 



/?. Mandibles rounded off in front, uniformly toothed. Tarsi 

 unarmed, with scopula Cyrtauchenius (Thor.). 



b. Head low, rising slowly from the thorax; centre fovea of ce- 

 phalothorax transversal or ^-shaped, open behind {Tapinoce- 

 phali Auss.). 



a. Apex of mandibles, in front, furnished with a row of teeth 



resembling a carding-comb Nemesia (Sav. et Aud.). 



/?. Mandibles destitute of teeth or spines at the apex. 



1. Mamillse not longer than half the length of the ab- 

 domen Brachythele Auss. 



2. Mamillse equal in length to the whole abdomen . . . . 

 Macrothele Auss. 



B. Only two tarsal claws Ischnocolus Auss. 



