252 A. C. OUDEMANS, NOTES ON ACARI. 
of it; the longer one is still shorter than the width of the 
body. The long anus touches the posterior incision. 
Mandibles comparatively strong. 
Maxillae usual, with the usual biarticulate short palps. 
Legs shorter than the width of the body, slender. 
Protonympha. (Fig. 32, 33). Length, measured on 
20 individuals, from 380 to 550 ax. Colour pale; legs 
and shields yellowisch brown. Shape very elongate, at least 
three times longer than wide. Texture smooth in the legs 
and shields; finely wrinkled in the unprotected parts. 
Dorsal side (Fig 32). Anterior dorsal shield 
much more developed than in the larva; it reaches far more 
backward ; anterioly and externally with two chitinous almost 
parallel ridges which reach a little beyond the trochanteres I; 
posteriorly truncate with accolade-shaped edge ; laterally with 
narrow band of unprotected skin between itself and the edge 
of the body; posteriorly provided with the less chitinized 
Y-shaped marking; the two posterior pieces much larger 
than in the larva. Posterior dorsal shield reaching 
not more forward than the coxae IV, narrow, posteriorly grad- 
ually wider and rounded, so that it has the form of a bell- 
clapper. Anterior lateral shields ventral. Middle 
lateral shields absent. Posterior lateral shields 
only dorsal, not a piece of them is ventral, elongate piriform, 
top forward, sharp posteriorly. Hairs the same as in the 
larva, except a few more quite posteriorly. Vertical hairs lon- 
ger. The long hairs in the posterior pieces of the anterior 
dorsal shield are much longer; they reach farther than the 
ends of legs IL. The lateral hairs are before the two minute 
dorsal hairs, not behind these. Quite posteriorly a pair of minute 
hairs in the head of the bell-clapper; a pair of dito flanking 
the median incision; then, going outward, a pair of thin hairs 
shorter than the width of the body; then a pair of thin hairs 
about as long as half the length of the body; finally a pair 
