DETERMINATION OF GENERIC TYPES, ETC. 93 



Chaos Linnaeus, 1767, 1074, 1326-1327. Type by absolute tautonymy Chaos protheus 

 Linnaeus, 1767; = Volvox chaos Linnaeus, 1758a; = Chaos chaos (Linnaeus, 

 1758) Stiles, 1905 [= Amceba proteus]. For discussion, see p. 38. 



[Not Chaus Gray, 1843, mammal.] 

 chaos Linnaeus, 1758a, 821. See also proteus and protheus. 



1758: Volvox. [1767: Chaos (type).] [1773: Vibrio.] [1786: Proteus.] [1822: 



Amiba (type).] [1831: Amoeba (type).] 



Characostomum Railliet, 1902, 109-110. Type species C. longemucronatum (Molin, 

 1861). Eailliet proposed this generic name as substitute for GlobocepJialus 

 Molin, 1861, because of the existence of GIobicephalus~Lei-son, 1828, mammal. 

 He had previously (1895) proposed Cystocephalas as substitute, but this is 

 preoccupied by Cystocephalus Leger, 1892. Since, however, Globocephalus 

 and Globicephalus are two different combinations of letters, they are differ- 

 ent, hence can not be identical. There is therefore no necessity for rejecting 

 Globocephalus. 



Cheilospirura Diesing, 1861a, 618, 683-686. Type species by present designation C. 

 hamulosa. 



1884: Cheirospirura von Drasche, 1884a, 213. Misprint, 



posthelica (Molin, 1860) Diesing, 185la, 683-684. $ 



quadricostata (Molin, 1860) Diesing, 1861a, 684; $ 9 



erecta (Molin, 1860) Diesing, 1861a, 684. $ 9 See Spiroptera anabatis. 



uncinipenis (Molin, 1860) Diesing, 1861a, 684-685. $ 9 . From Rhea ameri- 

 cana. 



hamulosa (Diesing, 1851) Diesing, 1861a, 685. $ 9 (From Gallus gallus.) 

 To Dispharagus by Stossich, 1890. 



longestriata (Molin, 1860) Diesing, 1861a, 685. $ 9 



cephaloptera (Molin, 1860) Diesing, 1861a, 686. $ 9 To Oxyspirura by 

 Stossich, 1897 (type). 



capillaris (Molin, 1860) Diesing, 1861a, 686; sp. inq. 



Cheilospirura hamulosa is here designated as type of Cheilospirura; upon the 

 following grounds: (1) It is a more or less common and widespread species 

 found in a food animal, hence it can be easily obtained; (2) it was examined 

 by Diesing, the author of the genus; (3) it is^the oldest of the original 

 species of Cheilospirura; (4) as the generic name Dispharagus, 1845 (with 

 which hamulosais now usually combined), must drop as synonym of Acuaria 

 1811 (because of type by inclusion), a selection of hamulosa as type of 

 Cheilospirura, 1861, now gives us a more or less well-know T n name for the 

 hamulosa group. 

 Cheilostomi Diesing, 1851a, 264, 276-279. Section of Filaria with two subsections: 



Dicheilostond and Tricheilostomi. 



Cheiracanthus Diesing, 1838a, 189 [nomen nudum except for habitat]; 1839a, 221- 

 227. Type species by inclusion C. robustus. See Gnathostoma. 



[Not Cheiracanthus Agassiz, 1833, fish.] 



robustus Diesing, 1838a, 189 [nomen nudum except for habitat]; 1839a, 222- 

 225, pi. 14, figs. 1-7. $ 9 See Gnathostoma spinigerum. 



gracilis Diesing, 1838a, 189 [nomen nudum except for habitat]; 1839a, 225, pi. 

 14, figs. 8-11. $ 9 



Diesing (1839) gives Gnathostoma spinlgeriuii Owen, 1837, as probable synonym 



of Ch. robustus. 



Cheirospirura von Drasche. 1884a, 213. Misprint for Cheilospirura. 

 chlorurus de Man, 1880, 61-62. 



1880: Odontolaimus (type). 



