PLATE I. 



Fig. 



1. Upper side of male Xanthopsis Leachii (p. 14). In the collection of Mr. Wetherell. 



From the tunnel near Chalk Farm. 



2. Under surface of the same specimen. 



3. Xanthopsis Leachii ; showing the upper surface of the claws, and the frontal and 



antennary regions. In the collection of Mr. Bowerhank. %rom the Isle of 

 Sheppey. 



4. Under side of female Xanthopsis Leachii. In Mr. Wetherell's collection. From 



Chalk Farm. 



5. Upper sui'face of Xanthopsis bispinosa (p. 15). In Mr. Bowerbank's collection. 



From Sheppey. 



6. Under side of the same. 



7. Diagram showing the antennaj and orbits of the genus Xanthopsis. 



8. ]\Ial(; abdomen of Xanthopsis. 



9. Female abdomen of ditto. 



10. Variety (?) of Xanthopsis Leachii, with the anterior two marginal processes obsolete 

 (p. 17). In the collection of Mr. Bowerbank. Sheppey. 



