DETERMINATION OF GENERIC TYPES, ETC. 77 



believe that all of us who have opposed its adoption should by all 

 means follow the orthography agreed upon by the supporters *of the 

 rule. Until such a list and such a demonstration exists, or until there 

 is at least an agreement upon the most common names and also an 

 agreement as to what are homonyms, we find ourselves forced (much 

 against our will) to continue to use original orthography. 



As interesting examples of certain cases which will arise in the 

 preparation of such a list 1 as is here suggested we will mention the 

 following nematode genera: 



The hymenopteron genus Allodape, 1825, seems to have been 

 changed to Allodapus Y>y Fieb., 1861. What influence has this upon 

 Allodapa Diesing, 1861? This case brings up the question as to 

 whether words like Distomus, Distoma, and I)istomum represent 

 homonj'ins. (See Internat. Code, Art. 36.) 



The Pre-Linnsean generic name Angystonta Klein, 1753, later Schu- 

 macher, 1817, was changed by Agassiz, 1846, to Angiostoma. What 

 effect does this have upon Angiostoma Dujardin, 1845 1 



Chromagaster Cobb, 1894, was changed to Chromogaster by Water- 

 house, 1902. How is this influenced by Chromogaster Lauterborn, 

 1893? 



Diplolaimus Linstow, 1876, was changed to Diplolsemus, see Scud- 

 der, 1884. How is this influenced by Diplolsemus Bell,- 1843 ? 



There is a lepidopteron genus Eligma Huebn., 1816, changed to 

 Heligma by ? , date ?. What is the status of Heliymus, 1845? 



There is a fish genus Enoplosus Lacep., 1832, which does not seem 

 liable to be confused with the nematode genus Enoplus Dujardin, 

 1845. In 1846, Agassiz emended Enoplosus, 1832, to Enoplus, which 

 is certainly an absolute homonym of Enoplus, 1845. What is the 

 status of Enoplosus, 1832. and Enoplus, 1845 ? 



Compare Ileterocheilus Diesing, 1839, with Ileterochelus Burmeister, 

 1844, coleopteron, and Heterocheila Rond., 1857, dipteron (also Hetero- 

 chilus}; Heterocheila Lioy., 1864, dipteron (also Heterocheild). 



Compare Hoplocephalus Linstow, 1898, with IToplocephalus and 

 Oplocephalus Cuvier, 1829, reptile; Roplocephala Macq., 1845, dip- 

 teron; ITeplacephala Walker, 1857, dipteron; Oplocephala Lap., 1831, 

 coleopteron; Hoplocephala (v.. Oplocephala and Heplacephala). 



Isakis Lespes, 1856, was proposed for a genus of worms; it appears 

 to have been changed to Isacis by Diesing, 1861; it is given by the 

 Zool. Rec. (1896), 1897, as Isacus. Now, there exists Isacis and Isacus 

 Cope, 1873, mammal. What effect does Isakis, 1856, have upon Isacus, 

 1873, and would the effect be the same if Isacus had not been used by 

 Zool. Rec., 1897? 



1 See also Cockerell, 1905. The letter " k " in zoological nomenclature < Science, 



N. Y., n. s. (561), v. 22, Sept. 29, 399-400. 



