(dr. a. c. oudemans). new list of dutch acari, I. 157 



57. Ili/pocïdhonius rufulus (G. L. Koch). — In decaying leaves , 

 in moss. — Ruurloo, Haarlem, The Hague. — 5, 7, 8. 



Phthiracariiiae. 



58. Hoploderma magnum (Nic). — In decaying leaves, in moss. 

 — Delden, Ruurloo, Zutphen , De Steeg, Haarlem, The Hague. — 

 ^, 5, 7, 8. 



59. Hoploderma dasypus (Ant. Dug.), — In decaying leaves, 

 in moss. — Sneek , Delden , Lochern , Ruurloo , Warnsveld , Zul- 

 phen, Brummen, De Steeg, Haarlem, Overveen, Bloemendaal, 

 The Hague , Bergen op Zoom. — 4 , 5 , 6 , 7 , 8. 



60. Phthiracariis arduus (C. L. Koch). — In decaying leaves 

 in moss. — Langweer, Lochern, Zutphen, De Steeg, Haarlem, 

 Overveen, Bloemendaal. — 5, 6, 7, 8. 



REMARKS 



and descriptions of new species. 



Notaspis trimaculatus (G. L. Koch ) 



The specimens found by me are of the form delineated by 

 Berlese and Kramer , for I consider Kramer's Orihata incisella 

 identic to Koch's setosa. The hairs on the abdomen are short and 

 stiff, not curved and flexible, as delineated by Michael. 



Notaspis depauperatus Beri. 



I think Michael is right in considering Orihata pusillus Berl. 

 (A. M. S. fase. 77, nr. 3) synonym to Orihata dejiauperata Berl. 

 (A. M S. fase. 35, nr. 6,) for my specimen resembles exactly .both 

 forms; it has, however, on tibia and genu 1 and 2 only a 

 stiff bristle instead of a strong spine, or of a feathered spine. 

 Further the lamellar cusps are small and the tectopedia 1 don 't 

 have a free point. I consider these characters too insignificant to 

 form a new species. 



