THE GENUS TAPINOCYBA. 25 1 



The coxce are large, stout, and rather grooved below. 

 The trochanters are small, and their cuticle shows one or 

 two chitinous projections. 



The femora are long, cylindrical, and clothed with rather 

 stout and long hairs. 



The patellce are short. Each bears a short spine above, 

 near the apex. 



The tibics are long and cylindrical. Each bears a short 

 spine above, near the base. Tibiae I. and II. bear a so-called 

 acoustic seta above, at the juncture of middle and lower thirds. 

 Tibiae III. and IV., in addition to the above, bear another 

 similar organ about the middle. 



The metatarsi are rather short. Metatarsi I., II., and III. 

 bear a so-called acoustic seta about the middle of their upper 

 sides. This is wanting on metatarsus IV. 



The tarsi are very nearly equal to the metatarsi in length. 

 In the males they are slightly fusiform. The tarsal claws are 

 three in number. The superior pair are strongly toothed, 

 while the single inferior one is smaller and simple. 



As regards the so-called acoustic setae, the sound-perceiv- 

 ing function is very much open to doubt in my opinion. In 

 this Mr. Cambridge agrees with me. 



The abdomen of the Tapinocybae is greyish-yellow in colour, 

 rounded or oval, and bears no scutum. 



An epigyne is always more or less developed in the female. 

 A single oviducal aperture pierces it in the middle. On each 

 side of this is placed a smaller spermotheca. 



The spiracles and spinjierets are of the usual number, in the 

 normal positions, and call for no remark. 



There are in Great Britain five known species of Tapinocyba. 

 All five are found in England, two in Scotland, and as yet 

 none in Ireland. They fall into two groups. 

 Females. 



A. — Eyes large ; central anteriors not very much less than 

 central posteriors. The trapezium composed by the four 

 centrals is very nearly as wide in front as behind, and nearly 

 as broad as long. The posterior row only slightly procurved, 



