A. C. OUDEMANS, NOTES OX ACARI. 215 



Male (Fig. 3!)). Length 2G5 f/. without mandibles and 

 lobes, 352 jw with mandibles and lobes, thus a small species. 

 Colour pale yellowish brown. Shape like that of Pter. 

 totani (Can.) but much smaller and behind legs III suddenly 

 narrower, to become again wider in the region of the lobes, 

 thus having a body »en taille«. Incision (Fig. 32) nearly 

 circular, wholly provided with membrane; this is widest 

 posteriorly and touches the postcornal' membranes. As far as I 

 could observe the postcornal membranes are 5-toothed ; the 

 outer tooth bing the widest; then 3 narrow middle-teeth and 

 one rounded inner tooth. Texture smooth in the shields, 

 finely winkled in the unprotected parts. 



Dorsal side (fig. 30). Prosomatal margin dark 

 coloured and well chitinized, especially between legs I and II. 

 Anterior dorsal shield longer than wide, anteriorly 

 fused with the margin, not occupying the room within the 

 prosomatal margin, so that there is a distinct band of soft 

 skin between the margin and the shield, especially before the 

 long prosomatal hairs, where the shield even is provided with 

 an incision as if eroded. Behind this shield the band of soft 

 skin is narrow, only a little wider between this shield and 

 the lateral ones. Posterior dorsal shield and 

 lateral ones moreover covering the whole dorsum, except 

 a narrow band between the posterior and the lateral shields 

 and a narrow margin of the body behind the lateral shields. 

 Nepridial openings on a line with femora IV. 

 Hairs: long prosomatic hairs on a line with the trochanteres 

 II. Inside of these hairs the accompanying much smaller ones. 

 A pair of minute hairs in the anterior margin of the posterior 

 shield, and in those of the lateral shields. Before the trochan- 

 teres III the pair of long lateral hairs, having got a dorsal 

 position though very close to the edge. On a line a little 

 before this pair a pair of minute dorsal ones. On a line with 

 trochanteres II a pair of minute hairs close to the dark 



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