600 MR. LUBBOCK ON THE THYSANURA. 



argenteis," adding, in Frencli, " Meme taille que le precedent, thorax moins releve et 

 tete moins inclin^e que cliez le [Lepidocyrhis) curvicollis, corps revetu en entier d'ecailles 

 d'un blanc argente refletant quelqiiefois nne legere teinte cuivreuse ; pubescence 

 blanche, assez longue." He gives, however, no statement of the degree in which the 

 thorax of Jj. curvicollis projects over the head. So that, in fact, my reasons for identifying 

 my specimens with those of M. Botirlet are reduced to the silvery tint and the pubescence. 

 Unsatisfactory as this is, I thought it better than to burden science with a new name, 

 perhaps unnecessarily. 



LIPURID^. 



LiPURA. 



LiPTJBA AMBULANS {Podura ambulaiis, Linn.). White. Prothorax short, but visible 

 from above. Body covered with short scattered hairs. Legs "short. At the pos- 

 terior extremity of the abdomen are two hooks, which are curved upwards. The 

 skin is granular. 

 Common. 



Length -rg-'th of an inch. 



Nicolet states that in this species the spiracles are easily visible, and in pi. 4. fig. 4 

 he gives a figure of them, showing four pairs, situated on the back of the four first abdo- 

 minal segments. I can only say that I have been unable to find any trace either of 

 spiracles or of trachese. 



He also describes the eyes as twenty-eight in number, fourteen on each side, arranged 

 in two parallel rows of seven, behind the antennae. In the specimens I examined 1 

 could not see these eyes. 



LiPUUA CORTICINA {Adicrmius corticinus, Bourlet). This species much resembles Isotoma 

 fuliginosa, and lives in similar situations. It is black in colour, somewhat paler on 

 the under side. The eyes are dark. The body is covered with pubescence ; and 

 there are a few longer hairs, especially towards the posterior extremity. 

 Eound a few specimens in May, under bark. 

 Length Ysth of an inch, 



Anoura. 



Anotjra mtjscorum, Templeton. " Body subcyMndrical, turned posteriorly, and ending 

 with two mammillae, dark purplish. Head short, triangular; eyes not remote 

 from the base of the antennae, which are very short, and have the first joint very 

 large, the succeeding successively diminishing in size, last acuminate. Legs pale 

 blue. Rings with strong spiny hairs in rows along the back ; hairs usually arising 

 in pairs. Length "07 of an inch." {Templeton.) 

 My specimens were of a dull purple, irrorated thickly over a grey ground, and with 



the under side paler. They were tuberculated, so as at first sight to resemble even more 



