DIODON—DIOPLON. 235 
Diodon Srorr, 1780. Cete, Delphinide. 
Prodromus Methodi Mamm., 42, Tab. c, 1780. 
New name for Monodon Linneeus, 1758. *''Vulgari circa huius animalis fabricam 
errori nimium favere Monodontis nomen videatur." 
Name preoccupied by Diodon Linn:eus, 1758, a genus of Pisces. 
Diodon; ài-, two; 65@v=6do0vs, tooth—in allusion to the teeth, which are 
practically reduced to two in the maxilla. In the female these remain per- 
manently concealed in the alveolus, but in the male the left is enormously 
developed, while the right remains abortive. 
Diodon Lesson, 1828. Cete, Physeterid:ze. 
Compl. X(Euvres Buffon, Hist. Nat. Mamm. Ois. découy. depuis 1788, I, 124-128, 
440, 1828; Nouv. Tableau Régne Animal, Mamm., 200, 1842. 
Species: Delphinus desmaresti Risso (type), from Nice, France; and JD. sowerbyi 
Blainville, from Brodie, Elginshire, Scotland. 
Name preoccupied by Diodon Linnzeus, 1758 (Pisces); and by Diodon Storr, 
1780 (Delphinidze). ‘‘Peut-étre nous blámera-t-on d'avoir employé un nom 
que déjà l'icehthyologie avoit consacré à des poissons, . . . il nous suffira sans 
doute de rappeler que nos divisions ne peuvent étre rigoureusement considérées 
comme des genres, mais bien comme de petits groupes caractérisés par quel- 
ques particularités d'organisation." (Lesson, l. c., p. 123, 1828.) 
Name replaced by Hypodon Haldeman, 1841. 
Diodypus RarixEsquvE, 1815. Cete, Physeteride. 
Analyse de la Nature, 60-61, 1815; Gray, Cat. Seals and Whales Brit. Mus., 328, 
1866 (synonym of Hyperoodon). 
Nomen nudum. 
Dionyx I. Grorrroy, 1835. Edentata, Myrmecophagid:e. 
I. GEorrRov, Gervais’ Résumé des Lecons de Mammalogie professées au Muséum 
de Paris pendant l'année 1835, par I. Geoffroy Saint-Hilaire (extrait Écho du 
Monde Savant, I, 1835) 54; GvÉnIN, Icon. Régne Animal, III, Mamm., 27, 
1829-44; Gervais, Dict. Univ. Hist. Nat., V, 709, 1844 (under Fourmilier); 
Hist. Nat. Mamm., II, 260, 1855. 
Type: ‘Les fourmiliers à deux doigts aux membres antérieurs (Myrmecophaga 
didactyla Linnzeus), from Guiana. (See Cyclopes Gray, 1821). 
Name preoceupied by Dionyx Lepelletier et Serville, 1825, a genus of Coleoptera. 
Dionyx: Oi, two; óvv&, claw—from the claws of the fore limbs, which are 
reduced to two, whence the common name ‘two-toed anteater.’ 
Dioplodon Gervais, 1850.* Cete, Physeteridee. 
Comptes Rendus, Paris, XXXI, No. 15, p. 512, July—Dec., 1850; Zool. et Paléont. 
Franc., 1* éd., II, Exp. No. 40, p. 4, 1848-52; 2* éd., 289-290, pl. xr, figs. 3-6, 
1859. 
Diplodon MARscHALL, Nomenclator Zool., Mamm., 5, 1873 (misprint). 
Type: Delphinus densirostris Blainville, from the Indian Ocean (‘la mer des 
Indes’ ). 
Dioplodon: 61-, two; OxAov, weapon; 66@v=ddo0vs, tooth—in allusion to the 
two large teeth near the middle of the lower jaw. 
Dioplon | Bnookzs, 1828. Ungulata, Artiodactyla, Cervid:ze. 
** Cat. Anal. & Zool. Museum of Joshua Brookes, London, 44, 1828" (previous to 
July 14). 
Type: Dioplon muntjak (— Cervus muntjak Zimmermann), from Java. 
Name antedated by Muntiacus Rafinesque, 1815. 
Dioplon: 61-, two; ózAov, weapon—irom the large upper canines of the male, 
which, with the horns, render the animal ‘doubly armed.’ 


* In C. O. Waterhouse's Index Zool., 109, 1902, this date is given as 1846 with 
the reference: Bull. Acad. Belgique, XIII, 258. The generic name, however, does 
not occur in that article. 
T This name is open to question, as it was published in a sale catalogue. 
