ENGLISH SPECIES OF BED SPIDER. 



53 



prong being again split for a short distance at the extreme tip. 

 Claws of posterior legs, as in T. telarius, ending in hairs. 



2 . Palp. Terminal cone rather short but wide. 



Claius of legs as in T. telarius. 



Eggs whitish. 



Measv,rements. S , length 320 jj.; 2 , 380 /x. Strongly chitinised 

 part of penis about 43 /x in length, but, if the more weakly 

 chitinised part is included, it measures altogether about 65 /x. 



Host plant. Lombardy poplars, Regent's Park, London. 



Text-figure 3. 



a. Terminal segments of palp of T. cratcegi $. b. Ditto of T. schizojpus $ . c. Ditto 

 of T. talisi<B $. d. Ditto of T. populi <?. e. Ditto of T. lintearius $. 

 f. Ditto oi T. telarius $. g. Ditto of T.Uliarium $. 1. Terminal finger 

 or cone. 2. Dorsal sensory finger. 



Note. — 0. L. Koch described his T. populi from Lombardy 

 poplars (" italienischen Pappel "), so that there can be little doubt 

 as to the correctness of my identification of this species. The 

 Common Red Spider {T. telarius) is sometimes also present on 

 Lombardy poplars and also on ordinary poplars, but the males of 

 the, two species of mites are very unlike one another. 



