32 (dr. a. c. oudemans). new list or dutch acari, ii. 



and to try to draw it better than he did. That Müller did not 

 delineate the two most conspicuous shoulder-hairs, is a result of 

 these being very caduc. 



Only the travelling nymph is known to me. The specimens were 

 aÜ3iched to Ne crop //or us vespillo and (/ermanicus. Müller found them 

 on A^. vedlgator and Geotriqjes slercorarius , but « einzeln und 

 unstät. » 



The species is closely allied to ParasUus {JPoecilooJdrus) fucorum 

 (de Geer) ; yet differs from it by some striking characters. 



Length 700 ,«. — Colour pale, like P. fucorum, — Shape el- 

 liptical. — 



Borsai side (Fig. ^T) protected by two shields, the line of 

 demarcation being situated nearly on the middle of the animal's 

 length. Tiie anterior dorsal shield nearly covering the foremost half 5 

 the posterior one much smaller, almost triangular, with rounded 

 sides and rounded corners. The anterior shield shows a line, bowed 

 forward, on its hindmost part. All the hairs of the animal are 

 stiff bristles. Those of the anterior dorsal sliield are the larger; 

 those of the shoulders the most conspicuous. Those of the posterior 

 dorsal shield are somewhat smaller in size, whilst those on the 

 posterior abdomen are still smaller. 



The most remarkable feature of the ventral side (Fig. 48) is 

 the sternal shield. Like in P. fucorum (de Geer) there is a part 

 of this shield more chitinized and darker coloured than the rest. 

 But this more chitinized part is not a transversal band, but sur- 

 rounds like a pentagonal frame a light coloured centre. Also the 

 foremost part of the sternal shield is light-coloured. 



The legs (Fig. 47) are short, strong, spiny; the ambulacral 

 sucker large; therefore the legs resemble those of Celeripes [Spinturnix) . 

 The epistoma (Fig. 49) is tridentate ; the middle tooth rounded, 

 the lateral ones pointed, broad. 



The liypostoma (Fig. 50) shows this peculiaiity , that the internal 

 maxillar malae are far remote from another, and form with the 

 horns, partly hidden by ihem, almost pincers. 



On examing the creature it immediately strikes us, that each 



