(dr. a. c. oudkmans) JjIS-t o¥ dutch acari. 115 



MegameruH celer Duces as type, is the same as Eiopodes of Koch 

 witli Eupodes slriola Kocii as type, "Qwi Megamerus , 4834, cannot 

 be retained, as Mac Leay already used this name in 1827 for some 

 Coleoptera Chri/soMeUiui. Therelbre Eupodes Kocn, 1836, must be 

 used. Afterwards Guérin proposed the name of Taehijbates to replace 

 Megam.erns (Icon. Regn. Auiai. VIII, 15, 1843), which name 

 consequently is synonym to Eupodes Koch. 



7. [Sci/phius Koch, 1836). — This name must l)e replaced by 

 an other one, as Risso already used it in 1826 for a genus of 

 Pisces. 



8. {Sci/phlus) pratensis Koch. — Of this species Canestrini and 

 Fanzago say (Att. R. 1st. Ven. Sc Lett. Art. (5) IV. p. 77, 1877) 

 c( Lo Sc. pratensis dello stesso autore è forse un esamplare mutilato 

 della stessa specie. » The species meant here is Scj/p/iius ceriiius 

 Koch {^pgrrlioleucus Koch). I cannot be of this opinion, as Sc. 

 pratensis really has several bristles on its shoulder and only two 

 on the hind margin of its abdomen , whilst So. ceriuus has three 

 bristles on its shoulder, of which two are directed forwards, and 

 six on the hind margin of its abdomen. Also the prosonia (so-called 

 céphalothorax) of Sc. pratensis is shorter than that of Sc. cerinus. 



9. Penthaleus. I have a Fenthaleus hipustulatus Herm. from 

 Padova , taken by Prof. Berlese and bought by me from Mr. André 

 in Beaune and a Fenthaleus haematopus Koch found by myself on 

 a Limax rif/us, of course as a stray specimen. Both have become 

 uniformly green coloured in glycerine; a curious conformity of the 

 chymic properties of the humour or blood of two species of the 

 same genus ! 



10. Bdellei Dug. 1834. — This group afterwards has been 

 called Bdellides by Koch in 1842, Bdellea by van der Hoeven 

 in 1849, Bdellidae by Grube in 1859, Scirridae and Edellae hy 

 Gervais and van Beneden in 1869, Bdelloidae by Thorell in 

 1871, Sciridae by Donnadieu in 1875, finally BdeUidi and 

 Bdelllni by Canestrini and Fanzago in 4877. 



11. Bdella longicornis Linn, {Acanis longicornis Linn.) is always 

 considered as a synonym to Sclrus vulgaris Herm. This is most 



