ORDER PULMONARIiE. 411 



M. Dufour, the hooks of the tarsi ai'e inserted on a supple- 

 mentary articulation. 



Two species are known, one of which, thoracica, inhabits 

 the interior of our apartments, and the other, Monde, (Ann* 

 des Sc. Phys. V. Ixxvi. 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 erytlirina. 



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 veiy 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. 



Epi SINUS, Walck., 



Have also eight eyes, but approximated on a common eleva- 

 tion, and the corslet narrow, and almost cylindrical. 



The other In E QUITE LES 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 



