526 IV AR TRÂGARDH 



As this is not described by Berlese, I am not in a position 

 to say whether the characteristics of the présent form are also 

 found in the main form or not, but I believe the former to 

 be the case. 



One pair of small, triangular, anteriorly rounded, jugular 

 shields. Génital aperturesituated in front of the sternal 

 shield, large and transversally oval. Sterniti-metasternal 

 s hield anteriorly fused with the peritrematic and dorsal 

 shields forming a broad bridge between coxae I and II, the 

 anterior edge of which has a conical, rounded projection opposite 

 the jugular shields, at the inner (médian) side of which there is 

 a narrow incision ; anterior edge of sterniti-metasternal shields 

 almost perfectly straight 



Of the usual 5 pairs of hairs, the anterior one is placed in 

 front of the sternal shield, on the soft portion of cuticle which 

 surrounds the génital aperture ; the hairs decrease in length 

 backwards from the second one, so that the fifth, which is 

 placed behind the middle of coxae IV, is only half as long as the 

 second one. 



The legs. Legs II (fig. 8) resemble very much those of the 

 main form, but the fémur is a little narrower, calcar femo- 

 ralisalittle less curved, and processus tibialis (fig. 9 c) does 

 not point forwards as in the main form, but is almost perpen- 

 dicular and conical in outline, not constricted at the base as 

 in the main form, where it is also slightly larger; processus 

 axillaris (fig. 9 a) also différent ; the strongly chitinized 

 portion being comparatively wider than in the main form, 

 which is chiefly due to the projecting posterior angle of it. 



The joint exhibiting the greatest différences is, however, 

 the tarsus. Berlese describes thetarsus of legs II as follows 

 (1906, p. 177) : « tarso spina calcariforme acuta externa ad 

 basim articulo insita, recte in angulam .plicata, anterius directa ; 

 denique tuberculo minimo ante spinam praedictam elevato, 

 apice spinis duobus sat vaUdis aucto ». 



The above mentioned characteristic bristle, as weU as the 



