ORDER PULMONARI^. 401 



external side of the jaws, and have but five avticulations. The 

 tongue, at first very small (atypus), is afterwards elongated 

 and advanced between the jaws, and this character becomes 

 general. The last articulation of the palpi of the two sexes is 

 elongated, and fined into a point, towards the end. The males 

 have no strong spur at the extremity of their two anterior 

 legs. 



Atypus, Latr. Oletera, Walck., 



Have a very small tongue, almost covered by the internal 

 portion of the base of the jaws, and the eyes close together 

 and grouped upon a tubercle. 



Atypus Sulzeri. Latr., Gen. Crust, et Insect. I, v. 2, male ; 

 Dufour, Ann. des Scienc. Phys. V. Ixxiii. 6. ; Aranea picea, 

 Sulz. ; Oletere atype, Walck. Faun. Frang. Arach. ii. 3, has 

 the body entirely blackish, and about eight lines in length. 

 The thorax is almost square, depressed posteriorly, swelled, 

 widened, and bi'oadly truncated in front, which gives it a form 

 very different from what this part of the body pi'esents in the 

 mygales. The forceps are very strong, and their claw, under- 

 neath, near the base, has a small eminence, in the form of a 

 tooth. The last articulation of the palpi of the male is 

 pointed at the end. The genital organ below gives origin to a 

 small semi-transparent piece, in the form of a scale, widened, 

 and unequally forked at the end, with a small silky hair at one 

 of its extremities. This species excavates, in inclined soils 

 covered with turf, a cylindrical tube, seven or eight inches in 

 length, at first cylindrical, afterwards inclined, where it spins 

 a tunnel of white silk, of the same form and the same dimen- 

 sions. The cocoon is fixed with some silk, and by the two 

 ends, to the bottom of this tunnel. It is found in the environs 

 of Paris, and of Bordeaux ; and M. de Basoches has observed, 

 near Seez, a variety which is constantly of a clear brown. 



M. Milbert, correspondent of the Museum of Natural His- 



VOL. XTII. D d 



