408 CLASS ARACHNIDA. 



of this subgenus, and appears to me closely allied with that 

 which I have named melanogaster, and which I believe to be 

 the Drassus liicifugus 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. It 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 thei-e 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 



Segestria, 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 araneides spin for themselves, 

 in the clefts of old walls, silten, 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 

 {Araneajlorentina, 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 thev live, divide them 



