DETERMINATION OF GENERIC TYPES, ETC. 35 



Mueller, 1T73, included Chaos redivivum Linnaeus, 1767, 1326 

 (which was proposed for certain worms "in aceto et glutine biblio- 

 pegorum"), in the synonymy of Vibrio anguillula; hence anguillula, 

 1773, equals redivivum, 1767, renamed, and was therefore not justi- 

 fied; accordingly the form to which anguillula, 1773, becomes confined 

 should take redivivum as its specific name, and anguillula should fall 

 into synonymy. 



In 1774, Goeze advanced the view that the vinegar eel (aceti, 1783) 

 was distinct from the Kleister eel (gluiinis, 1783), but he does not 

 appear to have named the species. Mueller (1776, 281) indicated con- 

 currence in Goeze's view, and later (1783, 161-163) recognized four 

 species, namely: 



Vibrio fluvialis (the "Anguille vulgaire" of Rozier, 1775); 



V. aceti (the "anguille du vinaigre" = vinegar eel); 



V. glutinis (the "Kleisteraek-hen," to which Mueller now confined Chaos redivivum 



Linnaeus, 1767 = Vibrio anguillula Mueller, 1773 [see above]); and 

 V. marinus. 



From the facts as thus far given it is clear that glutinis, 1783, is the 

 lineal descendant of anguillula, 1773, seu redivivum, 1767. 



The next work of importance is Mueller, 1786, 63 (Animalcula 

 Infusoria), which is not accessible to us. According to Gmelin (1790a, 

 3900-3901) and Sherborn (1902, 1077), Anguillula was proposed by 

 Mueller, 1786, 63, Avith four species, namely: 



Anguillula "0. F. Mueller, 1786, 63." 



aceti (Mueller, 1783) Mueller, 1786, 63 \_( = Chaos redivivum Linnaeus, 1767, 

 1326, in part) = ( Vibrio anguillufa Mueller, 1773, 41, in part) = Vibrio aceti 

 Mueller, 1783; to Gordius by Oken, 1815, 191; to Rhabditis by Dujardin, 

 1845; to Anguillula by Diesing, 1851; type of Anguillula by Bastian, 1865c, 

 110]. 



fluviatilis Mueller, 1786, 65 [= Vibrio fluvialis Mueller, 1783, 161]. 



glutinis (Mueller, 1783) Mueller, 1786, 64 [= Vibrio anguillula Mueller, 1773, 

 41, renamed = Chaos rediiivum Linnaeus, 1767, renamed (the latter definitely 

 confined to glutinis by Mueller, 1783, 162) = Vibrio glutinis Mueller, 1783, 

 162; to Gordius by Oken, 1815, 191; to Rhabditis by Dujardin, 1845]. 



marina (Mueller, 1783) Mueller, 1786, 163 [= Vibrio marinus Mueller, 1783, 

 163; as type of Enchelidium\yy Ehrenberg, 1836. See also under Enchelidium 

 and Pontonema in Bastian, 1865c, 140, 174]. 



In Anguillula Mueller, 1786, there is a species glutinis, 1783, with 

 anguillula, 1773, as synonym, hence (see above) anguillula, 1773, is 

 type by tautonymy of Anguillula, 1786; but as anguillula, 1773, 

 equals redivivum, 1767, renamed, this latter name, in its emended 

 sense namely, as equal to glutinis, 1783 should stand as type species 

 of Anguillula, 1786. The correct name for the " Kleisterselchen " is 

 thus seen to be Anguillula rediviva (Linnaeus, 1767) Stiles & Hassall, 

 1905. 



