ORDER PULMONARLE. 
411 
M. Dufour, the hooks of the tarsi are inserted on a supple- 
mentary articulation. 
Two species are known, one of which, thoracic a, inhabits 
the interior of our apartments, and the other, blonde , (Ann. 
des Sc. Phys. V. lxxvi. 5.) has been found by this naturalist, 
under calcareous debris, in the mountains of the kingdom of 
Valencia. It weaves itself a tube, of no regular form, of 
slender fabric, and milky whiteness, pretty nearly like the 
dysdera erythrina . 
Theridion, Walck . 
The eyes of which are eight in number, and thus disposed : 
four in the middle, in a square, of which the two anterior are 
placed upon a small eminence, and two on each side, also 
situated on a common elevation. The corslet is in the form 
of a reversed heart, or almost triangular. This subgenus is 
very numerous. 
Aranea, 13 — guttata , Fab., Ross., Faun., Etrusc. II. ix. 10. 
Eyes lateral, apart from each other ; body black, with thirteen 
round spots, one of a blood-red, on the abdomen — Tuscany, 
Island of Corsica. 
Its bite is believed to be very venomous, and even mortal. 
The A. mactans of Fabricius, another species of Theridion, 
but from South America, inspires the same fears in that 
country. It would seem that these prejudices arise from the 
black colour, cut with sanguine spots, of these animals. 
Episinus, Walck., 
Have also eight eyes, but approximated on a common eleva- 
tion, and the corslet narrow, and almost cylindrical. 
The other Ineqeiteles have the first pair of feet, and 
then the second, the longest. Such are 
Pholcus, Walck . , 
Whose eyes, eight in number, are placed on a tubercle, and 
