(dr. a. c. oudemans) list of dutch acari. 



269 



Dermatophagoides Scheremeteioskifl , yet in general aspect and in 

 details agrees more witli it that with any other known mite. 

 A description with figures will soon follow. 



28. Simonida. — This name was invented hy Carl Vogt in 

 his Zoologische Briefe p. 501 , 1850. Synonyms : 



Demodidae Nicolet in Arch. Mus. VII, p. 383, 1855. 

 Apnoi (partim) Giebel, Naturg. d. Thierr. IV. p. 399, 18G3. 

 Macrogasterida Landois in Greifsw, Medic. Beitr. p. 50 , 1863. 

 i)6V/^of/^6'^</tó<? Gervais and Van Beneden Zool. medic. II, p. 455, 1869. 

 Demodecidae Harting. Grondb. d. Dierk. III. p. 353, 1870. 

 DermatopJtUi Glaus, Grundzüge d. Zool. I. 1872. 



29. Demodex folliculorwm Sim. var. musculi nov. var. — In a 

 sebaceous pimple on the lip of a mouse with hundreds of P^o/r/v;«?'^-? 

 simplex. Tyrr. I found one single specimen of this variety. It is a 

 female. I give here a table of measurements for comparison (in 

 millimeters)* 



Total length 

 Breadth 

 Head-length 

 Thorax-lensth 



hominis 



0.40 

 0.04 

 0.02 

 0.09 



cams 



0.30 

 0.045 

 0.03 

 0.10 



cati 



0.225 

 0.033 

 0.022 

 0.075 



musculi 



0.180 

 0.027 

 0.022 

 0.050 



30. Phytoptidae Pagenstecher, 1861, in Zeit. wiss. Zool. XI. 

 p. (Sep. 2). Synonym : Tetrapodili Bremi apud Thomas in Zeit, 

 ges. Naturw. 39, p. 195, 1872. 



31. Eriophyes was the name given by Von Siebold , 1850, in 

 Arb. Entom. Sekt. Schles, Ges. Kult. — Dicjardin in 1851 used 

 the name Pkytoptus in Ann. Sc. Nat. (3) XV, p. 166, and Phytopus 

 (errore ?) ibidem p. 384. In a letter of Von Siebold to Thomas, 

 printed partly in Zeit. f. die ges. Naturw. 33. p. 355, the writer 

 clings to the name Eriophyes ; he uses this term several times. 

 And as to me. Von Siebold lias perfectly right in doing so. 



Arnhem, 

 June 11, 1897. 



