196 (db. a. c. oudemans). list or dutch acari. 



composant les classes des Crustacées , des Arachnides et des In- 

 sectes, created the group op Rìciniae et Tiques proprement dites». 

 It is true that besides the %Qn%x^ Ixodes ^wài Arg as , he also brought 

 into this group the genera Sarcoptes, Cheyletus ^ Smaris , Bclella 

 and Uropoda , but we distinctly observe that he choosed Ixodes 

 ricinus as the type oi h.\B grow^ Hic'miae. In 1814 Leach removed 

 the genera Chei/letus , Smarts^ Bdella and Sarcoptes from Ixodes, 

 Arg as , and [Jroimla. He made a group apart of them, which he 

 called Cheyletldes and gave to the group witli the genera Ixodes, 

 Argas and ilropoda the ndime oi Ixodides ; this was quite unnecessary. 

 Consequently Ixodides Leach 181-4 = lììcìniae Latr. 1806. The 

 name Ixodides is also used by Sundevall, 1833 , in his Conspectus 

 Arachnidum, and by Nicolet, 1855, in Arch. Mus. VII. p. 383. 

 Further we have the following synonyms: liic'mi Koch, 1847, 

 in his Ueb. d. Ar. Syst. IV, p. 5; Ixodea GERSxäCKER, 1860, in 

 Arch. f. path. Anat. Phys. u. klin. Med. XIX, p. 464; Giebel, 

 1863, in his Naturg. d. Thierrh. IV, p. 394; Ixodulae Gerst- 

 äCKER, 1863, in his Handbuch, d. Zool. p. 343; Gervais et 

 Van Beneden, 1869, in their Zool. Méd. II, p. 455.; Harting, 

 1870, in his Grondbeginselen der Dierk. , III , p. 351 ; Donnadieu , 

 1875, in his Recherches s. 1. Tétran. , p. 9; Mégnin, 1876, in 

 Journ. Anat. Phys. XII, p. 293; Conil, 1877, in Act. Ace. Nac. 

 Gienc. Buen-Air. , III, p. 7; Kramer, 1877, in Arch. f. Nat. 

 p. 219; Mégnin, 4877, in Rev. Magaz. Zool. p. 43; Murray, 



1877, in his Economic Entomology, Aptera, p. 93; Kramer, 



1878, in Zeit. ges. Naturw. 51, p. 549; Haller, 1880, in his 

 Die Milben als paras, d. Wirbell, p. 22; Mégnin, 1880, in his 

 Les Parasites et les malad, paras, p. 108, 117; Bertkau, 1880, 

 Mém. Sav. Etrang. Acad. Roy. Sc. Belg. 43, p. 109; Claus, 1880, 

 in his Grundzüge d. Zool. I , p. 652 , etc, etc. ; and Ixodoidae 

 Thorell in Oefv. Kong. Vet. Ak. Forh, p. 687. — 



13, The first group of liiciniae is called Argasides by Koch in 

 1844, in Arch, f, Nat. X, I. p. 219, and in his Uebersicht des 

 Aracim. Syst. 4, p. 11, and by Agassiz in his Nomencl. Zool. 

 Further: Argasidae , GERSTäCKER, 1860, in Arch. f. path. Anat. 



