600 
MR. LUBBOCK ON THE THYSANURA. 
argenteis," adding, in Erench, " Meme taille qne le precedent, thorax moins releve et 
tete moins inclinee que chez le (Lepidocyrtus) curvicollis, corps revetu en entier d'ecailles 
d'un blanc argente refl&ant qnelqnefois une legere teinte cuivreuse ; pubescence 
blanche, assez longue." He gives, however, no statement of the degree in which the 
thorax of L. curvicollis projects over the head. So that, in fact, my reasons for identifying 
my specimens with those of M. Bourlet 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. 
LIPURIDiE 
Li pur a. 
Lipura ambulans (Podura ambulans, 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 ^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 tracheae. 
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. 
Lipura corticina (Adicranus corticinw, Bourlet). This species much resembles Isotoma 
wsa, 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. 
Found a few specimens in May, under bark. 
Length -rVth of an inch 
Anoura. 
Anoura muscorum, Templeton. " Body subcylindrical, 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 dimiuishing in size, last acuminate. Legs pale 
blue. Bings 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 
