186 (DR. A. C. OUDEMANS) NOTES ON ACARI. 



hairs but shorter stand also in the axils of the hairs of the other 

 tibiae , and of the tarsi and genuals of the first and second pair. 

 Most probably these hairs have a special function, a tactile one, 

 or they have to observe sounds. 



I have also a nympha which is older, and which carries its larval and 

 two nymphal skins. Its prosoma and its legs are coloured light brown , 

 like Kocii's figure of Bamaeus torviis. The circumference of the 

 body is more rounded, not with such sinuosities as the nympha 

 described above (fig. 20). The legs are stronger and thicker than 

 those of the first nympha, and they resemble still more those of 

 the adult animal. This nympha is much more covered with woolly 

 hairs than the other one. The pseudostigmae are funneled (fig. 23). 



The imago has, as I already observed above much thicker legs 

 than NicoLET has represented them. The hairs of the legs are thick 

 and inflexible, but they are not so spiny as those of the nympha, 

 and more transparent. The imago has a pair of stiff hairs, just as 

 long and as thick as the pseudostigmatic organs, and standing 

 between the pseudostigmae , each hair next to one of these singular 

 organs. They are directed upwards and forwards. The single median 

 spine or hair on the hindpart of the metasoma has disappeared. 

 The cuticula is polished. 



I have imagines which are bare, and others which carry one 

 or two or even three reticulated nymphal skins. 



Explication of the figures (Tab. 10). > 



Fig. lo Oppia coîifervae Schrank, copied from Schrank. 



» 2. Ditto, drawn from nature. 



» 3. Ditto, under-side. 



» 4. Ditto, tarsus and claw of first pair of legs of the male, 



with special organ. 



» 5. Ditto, porus and its hair on the back of the metasoma. 



» 6. Ditto, foremost hair, on the snout. 



» 7. Ditto, saw-like hair on the coxa of the first pair of legs. 



)) 8. Pseudostigma and its organ. 



