54 MR. STANLEY HIRST ON THE 



4. Tetranychus talisi^, sp. n. 



d . Penis short and straight, the terminal half slender and 

 ending in a sharp point ; there is no trace of barb at the end ; it 

 is very much shorter than that of T. tiliarium or T. populi. 



Palp. Terminal finger or cone very minute, but usually longer 

 than wide, being conical and pointed. Dorsal sensory finger short 

 and slender, but the width seems to vary in different specimens. 



Text-figin-e 4. 



a. Terminal segments of palp of T. cratasgi ^ . h. Ditto of T. populi $ . c. Ditto 

 of T. talisia ^ . d. Ditto of T. lintearius ^ . e. Ditto of T. tiliarium $ . 

 /. Ditto of T. telarius ? . 



Claiv of first leg bifid when seen from a,bove ; when viewed 

 laterally, each fork bears two hairs (one dorsal, the other ventral) 

 as in T. carpini, but they are still more inconspicuous and difficult 

 to see, being very fine. The claws of the three posterior legs end 

 in haii'S as in T. telarius. 



2 . Palp. Terminal finger or cone fairly well developed and 

 rather stout, being about equal to the length of the neighbouring 

 rod-like setfe. Dorsal sensory finger slightly club-shaped. 



