(dr. a. C. OUDBMAlSrs). NOTRS ON ACARI. 105 



3. Acari of Brasil. 



From Mr. S. A. Poppe at Bremen I received some Acari to 

 determinale them. Tliey were caught on a Musca domestica at 

 San Paulo, Brazil, by Prof. H. von Jhehing. The species proved 

 to be nothing but our wel known Macrociieleshaäius {^.\^.Y>.oç\i), 

 which seems to be a cosmopolitan. 



4. Parasitus coleoptratorum (L.) $ 



I have only to add the following observations about the so-called 

 deutonynipha mascullna. 



The peritrema reaches the anterior margin of the body. 



The anns is almost terminal, so that the postanal hair and the 

 enormus crihnwi are dorsali 



The horns of the hijpostoma in my specimen are short, at least 

 twice shorter and wider than Berlese draws them, and bifid, 

 the two parts lying in a sagittal plan, so that with a ventral 

 view the ventral part almost hides the dorsal one. 



My specimen measures about 900 m in length. 



5. Parasitus crassipes (L.) 

 (With Plate 11, fig. 1—4). 



As the protonympha and the deiUoiipnpha are not yet accurately 

 described and figured I will try to do this here. 



Protonympha (fig. 1). — Length varying from 300 — G20 ^. — 

 Colour pale. — Shape like that o^ Parasitus coleoptratorum (L.) — 

 Texture. The shields are largely-scaly, but the scales are scarcely 

 visible; the unprotected skin finely wrinkled. — Borsai side 

 (fig. 1) protected by two shields, the anterior being twice longer 

 than the posterior one. The anterior shield has only about 12 

 pair of hairs; the posterior shield has the same number, but as 

 it is smaller, the hairs stand nearer one to another, and it appears 

 as if this shield has more hairs, which is in fact the case in the 

 well-known tritonympha. The two small shoulder-hairs are directe 

 outward and gently bent forward. 



