92 TRAP -DOOR SPIDERS. 



ordinary cork nests, but has a short spur-like projec- 

 tion above and behind the hinge, serving, as is con- 

 jectured, like a lever, by pressing on which from the 

 outside the lid may easily be raised,* When I come 

 to speak of the manner of constructing and repairing 

 nests I shall have occasion to refer to these nests 

 again. 



I have not as yet found any nests on the Eiviera 

 which can be said to correspond accurately with those 

 of Cf. ionica, the only builders of cork nests yet dis- 

 covered in this district being Cteniza fodiens and 

 Nemesia ccBmentaria. 



This latter species is described by Mr. Pickard- 

 Cambridge,t in the following terms : — 



Gen. Nemesia (Savigny). 



Nemesia c^mentaria. Plate IX. 



Syn. Ml/gale ccementaria (Latr.), //. iV. des Crust, t. vii. 

 p. 164. 



M. ccementaria (Walck), Ins. Apt. i. p. 135. 

 Female advilt, length 9 to 11 lines. 



Cephalothorax rather elongate, oval, and somewhat truncated 

 at each extremity ; the caput is elevated and rounded on the sides 

 and upper part, but less elevated than in Cteniza ; the normal 

 grooves and indentations are well marked, and the junction of the 

 cephalic and thoracic segments is indicated by a strong deep impres- 

 sion or cleft, of a transverse, curved, or somewhat bent angular 

 form, the curve or angle directed forwards. The colour of the 

 cephalothorax is yellow-brown tinged with olive, the margins are 

 paler, but have no distinctly defined marginal band. On the 

 hinder part of the caput are three clear brown-yellow longitudinal 

 stripes ; the central one reaches from behind the two hind central 

 eyes to the thoracic junction, the lateral ones converge a little to 



* I must own to some hesitation about accepting this explanation, though 

 I am not prepared to oflfer any other. 



t See above, p. 88. 



