A. C. OUUEMANS, NOTES ON ACARI. 223 



a third pair quite marginally near trochanteres IV; on the 

 outside of the horn (Fig. 35), on a level with the top of the 

 incision, a thin and short hair; more backward a little behind 

 the level where the horns are widest an external short pin, 

 directed ontward ; in the external posterior corner of the horn 

 the long and stif hair nearly as long as the metasoma, more 

 inward, planted apparently in the horn, not in the membrane, 

 and behind the top of the chitinous rod a thin hair as long as 

 the horn itzelf; in the inner corner of the horn a short thorn 

 directed inward ; finally in the inner margin of the horn, 

 there where it is widest, a short stiff thin hair directed inward. 

 Ventral side f Fig. 34). E p i m e r a I united to a sternum 

 and lengthened along the neck. Epiraera II as long as epimera 

 I, proximally a little bent outward, distally lenghtheued 

 forward along the free edge of the prosoma and along the 

 edge where the trochanter I is joined. Also the margin along 

 the trochanter II is dark. Then fellows the curve ventral 

 prolongation of the dorsal anterior prosomatic margin, Epimera 

 III short, lengthened outward along trochanter III, and inward 

 only a little. Epimera IV nearly twice longer than trochanter 

 IV, with proximal outer epimerite extending to trochanter III 

 and with distal outer very wide epimerite extending before 

 trochanter IV to the edge of the body. Then exact on the 

 place where ,,a fifth epimeron" could be, we find a short 

 chitinous bar. Shields. No coxal plates. Lateral shields 

 distinct. Behind trochanteres IV the dorsal shield sulflexes 

 c nsiderably to form a kind of clasper probably during the 

 copulation. Epiandrium enormous, formed like a A with 

 somewhat s-shaped branches. Genital opening with 

 chitinous edges. Penis short, rodlike. Genital suckers 

 minute but distinct on tlie proximal ends of the branches of 

 the A. Anal suckers well developed, distant from each 

 other and from the posterior edge about one and a half of 

 their diameter. Anus touching the posterior edge. Hairs. 



