132 TRAP-DOOR SPIDERS. 



are led to suppose tliat a door of the cork type is 

 always associated with a simple tube, in which there 

 is no trace of a second door or valve, so that, judging 

 of the unknown by the known, we conclude that 

 nests which possess the characteristic peculiarity of 

 a true cork door are true cork nests in other respects 

 also. Further research may possibly show tliat there 

 are exceptions to this generalization, but I do not 

 at present know of any. 



I have seen Australian specimens of large trap- 

 doors, of the cork type, measuring from one to two 

 inches across. In some of these the doors were scarcely 

 more than semicircular but very thick, and having 

 their edges bevelled so as to correspond with the 

 sloping margin of the tube ;* in others, found at 

 Paramatta, and described to me by Lady Parker 

 as being tenanted by a black spider, the doors were 

 said to be circular and much smaller, scarcely larger 

 than a sixpence, and of the cork type. 



The upper portion of a nest from New Grranadahas 

 been figured and described by M. Victor Audouin,f 

 which closely resembles that drawn at Fig. A in Plate 

 VII., p. 88, but the door is about a third larger. 



I have also been assured that nests of the cork 

 type are found in many parts of India, and we have 

 seen above that they are reported to be common in 

 the island of Formosa. 



Putting all this together, it will be seen that nests 

 of this type are found all round the globe ; in For- 

 mosa, India, Syria, the Grecian Archipelago, Italy 



* Specimens of Australian nests may be seen in the cases at the British 

 Museum. 



+ Note sur la demeure d'une araignee magonne de I'Am^rique du Sud, 

 Annales des Sciences Naturelles (Zoologie), torn. vii. tab. 3, p. 227-231. 



