TRÄGÅRDH, TWO MYRIOPODOPHILOUS ANTENNOPHORIN^. 27 



Diversipes and Dis pari pes also are provided with long bristles, 

 which are, however, furnished by the last pair of legs. 



The first pair of legs undoubtly acts chiefly as a ten- 

 tacle, but as already pointed out the four bristles of the femur 

 and the tarsus in Neomegistus act against one another and so 

 does the bristle of the femur and of the genu against both tibia 

 and tarsus in Paramegistus (conf. Textfig. 2 and Fig. 23, Pl. I) 

 and very likely enable them to hold on to the legs of the Julidse. 



The above described ridge on the lateral posterior side of 

 coxa I, which corresponds to the teeth of the anterior edge of 

 coxe II also very likely serves as means of keeping the first 

 pair of legs fixed in a certain position. The most powerful of 

 all the organs, which are specially adapted for the myriopodo- 

 philous life are the ambulacres which are enormously developed 

 and act as veritable suckers. 



Lastly the coxal and metapodial fissures, which have been 

 described above, and occur on all legs, are very likely in some 

 way connected with the myriopodophilous life, as I am not 

 aware of their having been found in other than myriopodophi- 

 lous acari. 



Notes 011 the ralation to the other AiiteimophoriuaB 

 and 011 the phylogeiiy. 



Neomegistus, Paramegistus, Echinomegistus Antennomegi- 

 stus and Parantennulus form a distinct group, characterized 

 by the great metapodial shields; in AnteymopJiorus these shields 

 are present although small; in Physalozercon they are fused 

 with the ventri-anal shield. 



The genus Parantennulus is distinguished through the se- 

 parate anal shield and m tliis respect agrees with the tritonymphcB 

 generantes of Neomegistus. Of the. remaining forms Neomegis- 

 tus, Paramegistus and Antennonfiegistus have a common feature, 

 the glandular fissures of the metapodial shields. As two of 

 the three genera are myropodophilous and metapodial fissures 

 are only known in the three present genera, this seems to in- 

 dicate that even Antennomegistus, although as yet only found 

 free-living, will prove to be a myriopodophilous form. This 

 seems all the more probable as the male of this genus (only one 

 species is known) has secondary copulatory characters analo- 



