202 INDEX GENERUM MAMMALIUM. 
Craspedura Gray, 1869. Ferze, Mustelidee. 
Cat. Carn., Pachyderm., & Edentate Mamm. Brit. Mus., 118, 1869. 
Name merely suggested, but never used, for the otter (Pteronura sanbachii) from 
Demerara, British Guiana. ‘‘The tail of the Demerara specimen has the same 
marginal rib as the Surinam one; . . . and the sides also are artificially 
extended, giving it a fin-like appearance, which induced me to give it the 
name of Pteronura. Craspedura, or margin-tailed, would have been a much 
more appropriate one." (GRAY. ) 
Craspedura: kpáóze8ov, margin; ovpa, tail. 
Crassitherium VAN BENEDEN, 1871. Sirenia, Halitheriid:e? 
Bull. Acad. Roy. Sci. Belgique, 2° sér., XX XII, 164-171, pl. —, 1871. 
Type: Crassitherium | robustum. Van Beneden, from the vicinity of Antwerp, 
Belgium. 
Extinct. Based on ‘‘une partie de la boite cranienne, une vertébre dorsale et 
une série de sept vertébres caudales." 
Crassitherium: Lat. crassus, thick; 67ezov, wild beast—‘‘a cause de la grande 
épaisseur des parois crániennes et de la forme toute particuliére du cráne." 
Craterogeomys (see Cratogeomys). Glires, Geomyidee. 
Crateromys Tuouas, 1895. Glires, Muridze, Murine. 
Ann. & Mag. Nat. Hist., 6th ser., XVI, 163-164, Aug., 1895; Trans. Zool. Soc. 
London, XIV, pt. vr, 408-409, pl. xxxvi, fig. 2, June, 1898. 
Type: Phlwomys schadenbergi Meyer, from Monte Data, northern Luzon, Philip- 
pine Islands. 
Crateromys: Kparepós, strong; 0s, mouse—in allusion to the fact that ‘‘it is 
is about the largest and heaviest member of the Muridz." (THoMAs in epist. ) 
Cratogeomys Merriam, 1895. Glires, Geomyidee. 
N. Am. Fauna, No. 8, pp. 23, 25, 150-162, plates and figures, Jan. 31, 1895. 
Craterogeomys ALLEN, Science, new ser., I, No. 25, p. 690, June 21, 1895 (mis- 
print). 
Type: Geomys merriami Thomas, from the Valley of Mexico. 
Cratogeomys: Kparos, strong, powerful; + Geomys—in reference to the relatively 
great size and strength of the animal. 
Craurothrix * THomas, 1896. Glires, Muridze, Rhynchomyine. 
Ann. & Mag. Nat. Hist., 6th ser., X VIII, 246, Sept. 1, 1896. 
New name for Echiothrix Gray, 1867, which is preoccupied by Echinothrix Brookes, 
1828, a genus of Erethizontide; and by Echinothrix Peters, 1853, a genus of 
Echinodermata. 
Craurothrix: Kpavpos, hard, brittle; 6025, hair—in allusion to the bristles inter- 
mingled with the fur. 
Creagroceros FirzincrEr, 1874. Ungulata, Artiodactyla, Cervidee. 
Sitzungsber. Math.-Nat. Cl. K. Akad. Wiss., Wien, LX VIII, Abth. 1, Jahrg. für 
1873, 348, 358, 1874. 
New name for Furcifer Wagner, 1844, which is preoccupied by Furcifer Fitzinger, 
1843, a genus of Reptilia. 
Creagroceros: pe&y pa, hook; Képas, horn—in allusion to the antlers, which are 
forked, with the small anterior prong curving upward and backward toward 
the posterior one. 
Crenidelphinus Lavurituarp, 1846. Cete, Squalodontidee. 
LAURILLARD, in D'Orbigny's Dict. Univ. Hist. Nat., IV, 636, 1846 (art. ‘Dauphin’ ). 
Type (species not mentioned) based on an upper jaw, from Léognan, near Bor- 
deaux, France, which was referred to Squalodon by Grateloup. 
Extinct. 

* Thomas subsequently abandoned this name. See explanation under Echiothrix. 
