ACARI 531 



in spite of small différences that seem to exist. Thus, the epis- 

 toma agrées well with the figure given by G. and R. Canes- 

 TRINI (1882, pi. 5, fig. 5), if we take into considération that it 

 is obviously somewhat cut-and-dried, the teeth being of too 

 equal a size, and too regularly placed. It is true, that the 

 mandibles drawn by Canestrini are différent, both jaws 

 being provided with only two teeth, but then we must bear 

 in mind that they must hâve been \vi*ongly dehneated, since 

 they differ from the figure given by Berlese, and about 

 the identity of Canestrini's and Berlese's spécimens there 

 can be no doubt, as Berlese has had an opportunity of exa- 

 mining Canestrini's type-specimens. The shape of the geniti- 

 ventral shieldisthe same in so far as it is longer ,than wide, 

 rounded anteriorly, and projecting a little beyond the posterior 

 side of coxœ IV, and with the postero-lateral sides forming 

 a line with those of the metapodal-peritrematic shields. 

 It difîers in one respect, that of the antero-lateral sides being 

 straight, while in Berlese's spécimen they are slightly con- 

 cave. This différence may, however, be due to the fact of my spé- 

 cimen being far more extended, and consequently the ventral 

 shield more fiât and horizontal than in Berlese's spécimen. 



Finally, fémur II has a low tubercle as in P. pectiriifer. In the 

 latter there is, however, also another, lower, one on the fémur. 



Length : 720 /;.. Width : 450 a. 



The size is consequently only a httle less than in Berlese's 

 spécimen for which G. et R. Canestrini give the measure- 

 ments as 800 and 440 [x. 



Dorsal side resembling that of the Italian form. 



Gnathosoma. Epistoma triangular (fig. 69), with wide 

 mucro, truncated at the top, where it is shghtly wider than 

 at the base. The edges hâve 10 to 12 fine, slender teeth of 

 unequal size, and with unequal interstices, often placed two 

 and two close together. The latéral edges of the mucro are 

 perfectly smooth ; the top is divided into 5 to 6 lappets, which. 

 are subdivided into fine fringes. 



