248 A. C. OUDEMANS, NOTES ON ACARI. 
Legs. III and IV placed far backward, so that the abdo- 
men is very small. Relatively the legs are short and thick; 
legs I and IT are thicker than III and IV; legs I are thicker 
than II; and legs IV thicker than III. On the dorsal side 
we observe: Legs I: genu proximally with pectinate hair, 
distally with a low wart on which are planted 
two smooth hairs; tibia distally with long tactile 
hair; tarsus proximally with sausage-shaped olfactoric rod, 
centrally with a fine smooth hair; distally with three fine 
and smooth hairs and ending in two claw-like 
processes which flank the minute ambulacral caruncle and 
claw. Fig. 25 represents the end of tarsus I seen with ventral 
aspect. Legs II like legs I, except the genu distally with a 
single hair. Legs III and IV: tibia distally with tactile hair ; 
tarsi like tarsi I and II without the olfactoric rod and central 
hair though. 
Female (Fig. 26—29) Length 317 a (without the 
mandibles). Colour pale. Shape oval, with a little con- 
cave sides behind the head. Texture. The dorsal and coxal 
shields are perfectly smooth, the remaining skin (Fig. 28) 
granulate. 
Dorsal side (Fig. 26). At about two seventh of the 
body length there is a distinct demarcation of prosoma 
and metasoma, the latter lying scarcely over the former. The 
dorsal shield (in the single specimen under my examination) 
has distinet limits in its posterior part; its anterior part was 
indiscernible ; its posterior part has a shape between a circle 
and a square, being a square with rounded sides and rounded 
‘angles. Though the whole remaining dorsum is granulate, and 
may therefore be considered as of the same weakness, I imagine 
to have distinguished a posterior (abdominal) portion limited 
by an anterior chitinous line, and thus resembling a shield. 
But it is possible that fresh specimens will not show this 
arrangement, as the state of conservation of the single speci- 
