INTRODUCTION. 



25 



Isotoma cursitans 



J , f enestrarum 



„ fusiformis 



,, violacea 



,, pulex 



,, spilosoma 



„ Desmarestii 

 Acliorutes aquaticus 

 „ armatus 



„ riifescens 



„ nmscorvim 



„ similatus 



„ cyanoceplialus 



„ cellaris 



„ bielanensis 



„ muroiaim 



„ agaricorum 



,, maritimus 



„ larvatus 



Lipura ambulans 



„ laricis 



„ corticina 

 Anoura tuberculata 



,, rosea 



Degeeria nivalis. 



,, fenestrarum. 

 ,, nigromaculata. 



Lepidocyrtus violaceus. 

 „ gibbulus. 



Isotoma spilosoma. 



„ viridis. 

 Podura aquatica. 

 Acborutes armatus. 



„ rufescens, 



Anoura muscorum. 

 Acborutes similatus. 



„ cyanocepbalus. 



„ cellaris. 



,, bielanensis. 



„ murorum. 



„ cyanocepbalus. 



Lipura maritima. 

 Acborutes rufescens. 

 Lipura ambulans. 

 ,, corticina. 



Anoura muscorum. 

 ,, rosea. 



In order to extricate the group from tlie state of 

 confusion into wliicli it had fallen, M. Nicolet published 

 in 1846 a second memoir in the ' Ann. de la Soc. Ent. de 

 France.' He there divides the Podueid.e into three sub- 

 families — " Smynthurelles," " Podurelles," and " Lipu- 

 relles ;" the first being short, and the two latter elon- 

 gated, while the last differs from the two first in being 

 non-saltatorial. He recognises the following genera, viz. 

 Smynthurus, Dicijrtoma, Orchesella, Degeeria, Isotoma, 

 Podura, Acliorutes, Tomocerus, Cyplwderus, Anuroijliorus, 

 and Anoura. He also takes great pains to remove the 

 confusion produced by the simultaneous investigations 

 of the later, and the insufiicient descriptions of earlier, 

 authors. 



He recapitulates the number of species as follows : 



Lepismides 



45 



