246 A. C. OUDEMANS, NOTES ON ACARI. 
siderably in the middle of the body, at the level of the demar- 
cation of prosoma and metasoma and more backward, so that 
a distinct view of the demarcation and of the minute dorsal 
hairs was impossible. Efforts to distend the skin by the action 
of acetic acid and of kaustic kali were in vain. In trying to 
remove some detritus from the posterior end of the abdomen 
I unfortunately tore a part of the skin with the anus. For- 
tunately I have convinced me already of the fact that anal 
suckers were wanting. 
Length 200 » without the mandibles. Coulour probably 
pale. Shape probably oval. Texture smooth throughout. 
Dorsal side (Fig. 21). Probably there is a distinct 
demarcation of prosoma and metasoma in the middle of 
the body. The anterior dorsal shield probably is triangular 
in its hinder half, with top backward, and probably the fore- 
half is indistinet. I could not discover any other shield. 
Hairs. The two small vertical hairs are planted in a pair 
of shallow pits which are rounded anteriorly and open pos- 
teriorly, so that, though the vertical hairs were directed for- 
ward, I think the creature is capable to direct them backward 
and lay them down against the dorsum. The long prosomatic 
hairs are planted very near the edge of the shield, a little 
behind its greatest width. As far as I could observe the 
minute prosomatic hairs (inside of the long ones) are planted 
in the margin of the shield. Behind the demarcation of the 
prosoma and metasoma, in the anterior angles of the latter, a 
pair of minute hairs. Most probably the male is provided with 
the same metasomatic hairs as the female. Therefore I have 
delineated the spots where most probably minute hairs stand, 
i.e. one transverse row of 4 hairs just behind the demarcation ; 
one ditto and curved forward at the level of the trochanteres 
III; one ditto and still more curved forward at the level of 
trochanteres IV; and finally two hairs posteriorly near the 
posterior edge of the body. 
