ACARI 587 



pointed out that in the latter geniis there are distinct meta- 

 sternal shieldswith the usual pair of hairs, flankingthe sides 

 of the large epigynial shield, and surrounded by a shield 

 whichi now interpret as being composed by the sternal shield 

 fused with theendopodal shields. Ihave also called atten- 

 tion to Berlese's drawings of the female of Urosejus acumi- 

 natus, in which on each side of the epigynium a narrow 

 shield is dehneated, which to ail appearances is homolguous 

 with the metasternal shield of Trachytes Mich. 



In this respect there exists, consequently, a very essential 

 différence between thèse gênera, and the true Uropodinae, 

 in which, to judge from my examination of Urodinyclivs 

 Krameri G. Can., no distinct metasternal shields exist. 



If we add that in the same gênera the gnathosoma isnot 

 concealed by coxae I, which are not contiguous to one another, 

 that, as a conséquence of this, the tritosternumis not placed 

 in front of the ace tabula I, it is obvions |that they are not so clo- 

 sely related to the other Uropodinae as to render it appropriate 

 toreferthem to that sub-family. As it is, however, advisable to 

 examine more material before changing the présent arrangement, 

 I will confine myself in this paper to the above suggestions. 



Urosejus acuminatus (K.) Berl. 



(Fig. 109-115). 



To this species I refer with some hésitation 4 so-called 

 nymphae liomeomorphae. They agrée with that species with 

 regard to the gênerai shape, shape of dorsal and ventral 

 shields, and especially the dentateposteri or end of the former. 

 On the other hand, there are some déviations from Berlese's 

 drawings, but as thèse are not seldom somewhat cut-and- 

 dried (1), I do not think much importance ought to be attach 

 ed to this fact. 



(1) Thus, on Berlese's drawing of the nympha, ventral view, we notice that on the left side the 

 stigma is placed on a level between coxae III and IV, on the right side itisnot delineated atall, 

 and at the sides of the sternal shield there are only 3 pairs of hairs, a circumstance which is 

 obviously not in aceordauce ivith the facts, as there are otherwise invariably 4 pairs to be found. 



