(dr. A. C. OÜDEMANS). NEW LTST 0¥ DUTCH ACARI, I. 159 



Notaspis globulus (Nie.) 



My specimens are of about 1,25 millimeter and have a distinct 

 yellow or yellowish-brown patch on the abdomen near the anterior 

 margin. I think this is Acanis semitmlam 0. F. Müller = Acarus 

 semimilum Panzer. 



Notaspis gracilis (Michael.) 



My specimens have long, slender, finely feathered, pointed 

 pseudostigmatic organs instead of moderately davate ones. So that 

 we may change the «key» on page 10 of «Das Tierreich, Ori- 

 batidae » as follows : 



SPsstg. org. davate — 13. 

 Psstg. org. setiform, rod-like, or otherwise 

 —17. 



j Abd. globular N. globulus 



/ Abd. oval or otherwise — 1 la. 



j Abd. oval, rounded posteriosly N. gracilis. 



'I Abd. hexagonal, truncated posteriorly . . N. clypeatus. 



Notaspis alatus Herm., elimatus (G. L. Koch) and 

 la nee a tu s Oudms. 



There are three distinct forms , which may be called species , 



as there are, so far as I know, not found transitory forms. 

 The first is with davate pseudostigmatic organs: 



1778. Acarus marg'matm De Geer, Mém. VII, p. 152, t. 11, 

 f. 1. The pseudostigmatic organs are not delineated, they 

 may have been short and davate. The name itiarginatas is 

 preoccupied by De Geer himself, p. 133, t. 8, f. 6. 



1804. Notasjns alatus Herm. Mém. Apt. p. 92, t. 4, f. 6. The 

 pseudostigmatic organs are not drawn , they may have been 

 short and davate. 



1836. Zetes dorsalis Koch, Deu. Gr. Myr. Ar. 2, 14. Pseudostig- 

 matic organs distinctly davate. 



