xv CLASSIFICATION 41! 



species, one in the Mediterranean region and one in Chili. There 

 are about sixty species of Ifloborus, some of which have a wide 

 distribution, while many (e.g. U. republicanus, of Venezuela) are 

 social. The type species, U. walckenaerius, is a very rare spider 

 in England. 



(iii.) The MIAGRAMMOPINAE include two genera containing some 

 very interesting forms. The genus Miagrammopes, of which 

 twenty species have been described, though the number is 

 probably far greater, is characterised by a very long cylindrical 

 abdomen, and by the apparent possession of only four eyes, in 

 a transverse row. These are really the posterior eyes ; and the 

 anterior eyes, or some of them, are present in a very reduced 

 condition. Little is known of the habits of these spiders. 



The other genus, Hyptiotes, though only boasting three species, 

 possesses a special interest on account of the remarkable snare 

 constructed by the spiders which belong to it. 

 This has already been described in the section 

 upon defective orb- webs (see p. 349). 



The type species, H. paradoxus, is very rare 

 in England, and though small and inconspicuous, ' (flBHlP I 

 it is certainly one of the most curious members 

 of our Spider fauna. 



Fam. 25. Archeidae. -This small family 

 includes certain remarkable fossil spiders from 

 lialtic amber, and two rare recent forms, Archea 



(Eriauchenus) ivorkmani from Madagascar, and Fl - 21 ' 2 - 



_ . paradoxus, ? . 



Mecysmauchemus si'</tni'/itatus from America. 

 The chelicerae, which are extraordinarily long, are articulated far 

 away from the mouth-parts. The caput is clearly marked oft' 

 from the thorax, and is much raised. In several other respects 

 these spiders are very distinct from all other members of tin- 

 order. 



Fam. 26. Mimetidae. -The Mimctidac form a small group 

 in general appearance recalling the Theridiidae, with which family 

 they were for a long time incorporated. The chid' genera an- 

 Ero, Mlinetus, and Gelamn-. tiro fn/rattt ( == thoracica) is a 

 pretty little spider, not rare among grass in Knglaml. The 

 upper side of its very convex abdomen is marked with red, 

 yellow, and black, and hears two little protuberances or humps 

 near the middle. It is only about an eighth of an inch Ion- 



