408 
CLASS ARACHNIDA. 
of this subgenus, and appears to me closely allied with that 
which I have named meUmogaster , and which I believe to be 
the Drassus lucifitgus of M, Walckenaer, (SchoefF. Icon. ci. 7.) 
One of the prettiest species, and which is very commonly 
found in the neighbourhood of Paris, running on the ground, 
is the D . relucens. Tt is small, almost cylindrical, with the 
thorax fawn-coloured, covered with a silky and purple down ; 
the abdomen mixed with blue, green, and red, with metallic 
reflexions, and two transverse lines of a golden yellow, the 
anterior of which is arched. There are also seen there some- 
times four golden points. 
In the other tubiteles, the jaws do not form a kind of arch 
enclosing the tongue. Their external side is dilated inferiorly, 
below the origin of the palpi. 
Some of them have but six eyes, four of which are anterior, 
forming a transverse line, and the other two posterior, situated 
one on each side, behind the two lateral ones of the preceding 
line- Such is the essential character of 
Sege stri a, Latr. 
Their tongue is almost square and elongated. The first 
pair of feet, and after them the second, are the longest; the 
third is the shortest. These arane'ides spin for themselves, 
in the clefts of old avails, silken, cylindrical, elongated tubes, 
in which they remain, having their first pair of feet directed 
forwards. Some diverging threads border externally the 
entrance of their habitation and form a small web proper for 
catching insects. The genital organ of the segestria perfida 
(Aranea Jlorentina , Ross., Faun., Etrusc., xix. 3.), a tolerably 
large species, black, with green forceps, and not uncommon in 
France, is in the form of a drop, or ovoido- conical, very sharp 
at the end, entirely projecting, and red. 
The other tubiteles have eight eyes. We may, by reason of 
the difference of the medium in which they live, divide them 
