652 NOTES AND EXHIBITS. 



which appeared to be referable to T. Dunkiensis, Forbes; also 

 examples of T. semicostanea, and of 2\ Bellenden-kerensis. 



Mr. Rainbow exhibited specimens of two interesting spiders 

 from the neighbourhood of Sydney, one (Ariamnes flagellum, 

 Dolesch.) a long whip-like Theridion, the other (Leptorchestes stria- 

 tipes, L. Koch) an ant-resembling Attid. Of these the first named 

 was obtained at Belle Vue Hill by Mr. B. G. Rye, F.E.S., and the 

 latter was collected by the exhibitor at Botany. Both species 

 are interesting not only on account of their form but also by their 

 mimicry. A. flagelltim constructs a small, loosely woven, irregular 

 web amongst the branchlets or spurs of shrubs, and when dis- 

 turbed or alarmed drops out of its web and hangs suspended by a 

 thin silken line; owing to its colour and the manner in which it 

 folds its legs it has the appearance of a small dead stick dangling 

 in the air. L. sfriafipes lives on branches of trees in the com- 

 pany of ants, to which it bears so close a resemblance that it is 

 exceedingly difficult to detect it; in addition to this, it adds to 

 the deception by running forwards, backwards, and zig-zagging 

 similarly to ants, and also carries the anterior pair of legs in front, 

 working thern the while in imitation of antennae. They are not 

 in the least afraid of the ants, nor do the latter take any notice 

 of them. Their food consists of various leaf and flower insects, 

 but they do not capture them, as other species of Attidte do, by 

 springing upon them. 



