178 AOHORUTES. 



A. Without booklets at the end of the abdomen. 



Achorutes dubius, Templeton. 



Acliorides dubius, Temp. Trans. Ent. Soc, vol. i. 



— — Lucas. His. Nat. Anim. Art. 



Podura Nicoleti, Perty. Mitt, des Naturf. Ges. Bern., 1849. 



— — Nicolet. Ann. Soc. Ent. France, 1847. 



— dubius, „ ,, „ „ 



*' Body subcybndrical, purpbsh-black, shiny, with 

 scattered hairs. Head large, subtriangular, truncate 

 anteriorly. Eyes remote from the base of the antennse, 

 which have the first two joints very short, the 

 succeeding long and not much contracted. Apex of 

 the abdomen ending obtusely. 



" Length '03 of an inch. 



" Switzerland, England." 



Templeton found this species on the surface of 

 standing water. I met with it in great numbers on a 

 sandbank at Alum Bay in the month of December. 



This is the only species of this division of the genus 

 which I have found in England. The other species on 

 record are the following : 



Achorutes similatus^ Nicolet. 



Podura similata, Nicolet. Mem. Soc. Helv., 1842. 

 Hyiwgastrurafuscoviridis, Bourlet. Mem. Soc. Douai, 1842. 

 Achorutes similatus, Gervais. His. Ins. Apteres, p. 438. 



Nicolet describes this species as follows : 



" Entierement d'un gris plombe, non metallique, plus 

 pale en dessous, avec quelques lignes longitudinales 

 jaunes, tres-peu apparentes sur le dos. Deux petites 

 taches de meme couleur sur le cou. Yeux d'un noir 

 terne. Queue pale. 



" Longueur 1 — 2 millim. Sur les eaux stagnantes, 

 en ete, et dans les terres humides, vers la fin de 1' 

 automne et en hiver ; vit en societe; tres-commune." 



Body covered with scattered set^. Eyes on black 

 patches. 



