CLASS V. IN5ECTA. 261 



Inhabits Trance, Germany, and England, in trees and hedges by tlijs 

 sides ol' running brooks. 



Fam. V. SiALiD.i. Leach, 



JNIegaloptera. Latreille. 



Thorax with the first segment large, not much longer than broad : tarsi 

 five-jointcd : ubti^s ot" equal size: feet resembling each other. 



Genus 39G. SIALIS. Latr., Leach. IIf.merobius. Geoff., Be 

 Gcer, Oliv. Semiujs. Fabr. 

 Wings deflexed : tarsi with the last joint but one bifid : ocelli none. 

 Sp. 1. Si. niger. 

 Inhabits trees; the larva in water. 



Fam. \'J. R.vPiiiDrAD.E. Leach. 



R H A PH I D I x.T.. Latreille. 



II7«i,'.s of equal size: thorar with the first segment large: tar'si with 

 four distinct joints, the last but one bilobate : antenna: nearly seta- 

 ceous : ocelli three, arranged in a triangle. 



Genus 397. RAPHIDIA. Linn., Geoff., Be Gccr, Fabr., Oliv., 

 L(un., JMtr., Leach. 



Head oval, narrowed behind, intlcxed : tliorcuc with the first segment 

 very lono;, narrow, and somewhat cylindric: anus of the female with 

 two united seta>. 



Sp. 1. Raph. vphiopsis. {PI. 7. Jig. G.) 



Inhabits trees and bushes near rivulets. 



Fam. VII. PsociD.1. Leach. 

 PsoQUiLL^. LMtreille. 



Inferior wings smaller than the superior ones : some are apterous : 

 palpi two, composed of four joints. 



Stirps 1. — Tarsi two-jointed. 



Genus 398. PSOCUS. Latr., Leach. 

 Tri)?i;s four. 



Sp. 1. F&o. bipnnctatus. Latr. 

 Inhabits woods. 



Stirps 2. — Tarsi three-jointed. 



Genus 399. ATROPOS. Leach. Termes. Linn., Be Geer. Pso- 

 cus. Fabr., Latr. Pedicllus. Geoff. 

 IVings none. 

 Sp. 1. Atr. lignoria. 



Termes pulsatorium. Linn. Atropos lignaria. Leach. 

 Inhabits old books, and the paper on walls, often beating like a watch. 



