ACHOEUTES. 181 



sur le dos. Foils gris. Appendice saltatoire tres 

 court. Deux crochets recourbes en dessus a Tex- 

 tremite de I'abdomen, au dessus de I'anus. 



" Longueur 1 millim. et demi. Sur les eaux stag- 

 nantes ; peu commune." 



Nicolet considers Bourlet's H. fusco-viridis to be 

 referable to this species. Bourlet, however, does not 

 mention the abdominal booklets, and, on the whole, it 

 seems to me more probable that Bourlet's H. fusco- 

 viridis is Nicolet' s P. similata. 



Achorutes rufescens^ Nicolet. 



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

 Achorutes — Gervais. His. Ins. Apteres, vol. iii. 



— larvatus, „ „ „ ,, 



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



— — Lubbock. Trans. Linn. Soc, 1867. 



— — Tullberg. Skandinav. Podurider. 



" Yeux noirs. Tete et corps d'un rouge taille assez 

 vif. Antennes et pattes d'un beau jaune orange. 

 Crochets de I'abdomen tres-courts et presque droits. 



" Longueur 1 millim. et demi ; se trouve avec la 

 precedente ; assez rare." 



Switzerland, Sweden, England. 



Though Nicolet says " assez rare," I found this 

 species common in winter among dead leaves. 



Achorutes purpur6sce7is, Lubbock. 



Achorutes purpurescens, Lubbock. Trans. Linn. Soc, 1867. 

 — — Tullberg. Skand. Podur. 



Plate XLL 



Brownish-purple, underside of body rather paler. 

 Eyes not on a black patch. Body covered with short, 

 scattered, white hairs ; two clawed hooks at the 

 posterior extremity of the body. 



Length y^ of an inch. 



