DIPLOCLONUS—DIPLOMESODON. 991 
Diploclonus Marsu, 1890. Ungulata, Perissodactyla, Titanotheriidze. 
Am. Journ. Sci. & Arts, 3d ser., XX XIX, 523-524, June, 1890. 
Type: Diploclonus «amplus Marsh, from the Brontotherium beds (Oligocene) of 
South Dakota. 
Extinct. Based on ‘‘a nearly complete skull, in good preservation, but without 
the lower jaws."' 
Diploclonus: 811À00s, double; «Adv, twig, branch—in allusion to the apparent 
branching of the horn cores. 
Diplocus Aymarp, 1853. Ungulata, Artiodactyla, Anoplotheriide. 
Pietet's Traité Paléont., 2° éd., I, 340, 1853. 
Type: Diplocus gervaisii Aymard, from Gard, southern France. 
Name preoecupied by Diplocus Blanchard, 1845, a genus of Diptera. 
Extinct. Based on ‘une machoire.’ 
Diplocus: 612A 00s, double; dien, point. 
Diplocynodon Marsn, 1880. Marsupialia, Triconodontide. 
Am. Journ. Sci. & Arts, 3d ser., X X, 235-236, 1 fig. in text, Sept., 1880. 
Type: Diplocynodon victor Marsh, from the Jurassic (Atlantosaurus beds) of 
Wyoming. 
Name preoccupied by Diplocynodon Pomel, 1846 (Bull. Soc. Geol., III, 372), a 
genus of Reptilia. Replaced by Dicrocynodon (Marsh MS.) Osborn, 1888. 
Extinct. Based on ‘‘ various remains of several individuals found in the same 
locality. The most characteristic of these specimens isa right lower jaw, with 
most of the teeth in position, and well preserved.”’ 
Diplocynodon: óizAóoc, double; «vvróócr-—xvvóOovs, canine—''the canine is 
very large, and is inserted by two fangs. This important fact has suggested 
the name of the genus." (Mamnsn.) 
Diplodon (see Dioplodon). Cete, Physeteride. 
Diplodon Rorn, 1901. Ungulata, Ancylopoda, Homalodontotheriid:ze. 
Revista Mus. La Plata, X, 252, Oct., 1901 (sep. p. 4). 
Type: Diplodon ampliatus Roth, from the ‘Upper Cretaceous’ of Lago Musters, 
Territory of Chubut, Patagonia. 
Name preoceupied by Diplodon Spix, 1827, a genus of Mollusca. Replaced by 
Diplodonops Ameghino, 1902. 
Extinct. 
Diplodon: 617A 60s, double; ó0cv—0Ó807vs, tooth—in allusion to the lower pre- 
molars. ‘‘La parte anterior de los premolares inferiores . . . es bilobada en 
la cara labial por un surco."  (Rorn.) 
Diplodonops Amecuino, 1902. Ungulata, Ancylopoda, Homalodontotheriid:e. 
Bol. Acad. Nac. Cien. Córdoba, XVII, p. 28, May, 1902 (sep. p. 26). 
New name for Diplodon Roth, 1901, which is preoceupied by Diplodon Spix, 1827, 
a genus of Mollusca. 
Extinct. 
Diplodonops: Diplodon; Ow, aspect. 
Diplomesodon (subgenus of Sorex) Branpr, 1852. Insectivora, Soricide. 
Zool. Anhang Lehmann’s Reise nach Buchara und Samarkand (Baer und Hel- 
mersen's Beitr. Kenntn. Russisch. Reiches, XVII), 299, 1852 (sep. p. 5); 
Mélanges Biologiques, St. Pétersbourg, II, 592, 1857? (raised to generic rank). 
Type: Sorex pulchellus Lichtenstein, from the Kirghis Steppes, south western 
Siberia. 
Diplomesodon: SixA 60s, double; 4écoc, middle; 66@v=066o0vs, tooth, 
