11 



found with the cocoon containing its progeny, if this be forcibly 

 torn from her, she turns round and grasps it with her mandib- 

 ulae. All her limbs, one by one, may then be torn from her 

 body without forcing her to abandon her hold. But if, without 

 mangling the mother, the cocoon be skillfully removed from 

 her, and suddenly thrown out of sight, she instantaneously 

 loses all her activity, seems paralyzed, and coils her tremulous 

 limbs as if mortally wounded ; if the bag be returned, her 

 ferocity and strength are restored the moment she has any per- 

 ception of its presence, and she rushes to her treasure to de- 

 fend it to the last. 



Attus, (Walck.). Salticiis, (Latr.). 



Eyes 8, unequal in size, PI. 18, fig. 65 ; legs usually short 

 and proper for leaping, of different sizes ; maxilte erect, 

 rounded. Wandering in quest of prey, and leaping. Mak- 

 ing no web, but tubes of silk for shelter in crevices, under 

 bark, etc. 



Twenty-nine specie§. The numerous species of this genus 

 display skill and varied strategems to seize their pre}', which 

 must be interesting to an observer of nature. I have pre- 

 served the name of Attus because the name Atta, previously 

 given by Fabricius to a subdivision of Formica, could not be 

 mistaken for this, any more than the Romans would casus for 

 casa, and a thousand such words. [lOS] 



Epiblemum, (Mihi). 



Eyes 8, somewhat unequal in size, PI. 18, fig. 59; legs 

 1. 4. 3. 2. or 1. 4. 2. 3. ; lingna short, triangular; maxillae 

 somewhat pointed above, and a little inclined over the lingua ; 

 mandibuloe nearly horizontal, slender, as long as the cephalo- 

 thorax, tooth as long. Two species. These might be left with 

 Attus, to which they are closely related, but as that genus is 

 large, it needs divisions, and the mandibulas of these offer a 



