LES ae 
SIGMODON—SILENUS. 631 
Sigmodon—Continued. 
Sygmodon BrvrH, in Cuvier's Animal Kingdom, 1840, 113; new ed., 1849, 113; 
new ed., 1863, 101 (misprint). 
Type: Sigmodon hispidus Say & Ord, from the St. Johns River, eastern Florida. 
Sigmodon: Gíy a, the Greek letter Z2; 65@v=66do0vs, tooth—in allusion to the 
sigmoid pattern of the enamel of the molars when their crowns are worn down. 
Sigmodontomys ALLEN, 1897. Glires, Murid:e, Cricetinz. 
Bull. Am. Mus. Nat. Hist., N. Y., IX, 38-40, pl. 1, figs. 8-14, Mar. 11, 1897. 
Type: Sigmodontomys alfari Allen, from Jimenez, Costa Rica (alt., 700 ft. ). 
Sigmodontomys: Sigmodon; 4 Üc, mouse. 
Sigmogomphius J. C. Merriam, 1896. Glires, Castorid:e. 
Bull. Dept. Geol. Univ. Calif., I, No. 13, pp. 363-370, 2 figs. in text, Mar., 1896; 
TROUESSART, Cat. Mamm., new ed., fasc. 11, 450, 1897. 
Type: Sigmogomphius lecontei Merriam, from the Pliocene near Bald Peak, 2 miles 
east of Berkeley, Alameda County, California. : 
Extinct. Based on ‘the greater part of a skull with the upper molars and 
incisors.' 
Sigmogomphius: 6íy ua, the Greek letter =; y oudQtos, molar 
sigmoid pattern of the enamel of the upper molars. 
Sigmomys Tuomas, 1901. Glires, Murid:e, Cricetin:e. 
Ann. & Mag. Nat. Hist., 7th ser., VIII, 150-151, Aug., 1901. 
Species: Reithrodon alstoni Thomas (type), from Cumaná, Venezuela; and Sig- 
momys savannarum Thomas, from the savannas at the base of the Kanuku 
Mountains, British Guiana. 
Sigmomys: Sigmo- (don); 00s, mouse—in allusion to its resemblance to Sigmodon. 
Sika (subgenus of Cervus) Scu ATER, 1870. Ungulata, Artiodactyla, Cervidze. 
Proce. Zool. Soc. London, 1870, 115; (‘Hopason’) Grit, Arrangement Fam. 
Mamm., 80, 1872. 
Sica 'TRovEssART,* Cat. Mamm., new ed., fasc. 1v, 878, 1898 (in synonymy). 
Species, 3: Cervus mantchuricus Swinhoe, from northern China; C.taévanus Blyth, 
from Formosa; and C. sika Temminck (type), from Japan. 
Sika: A kind of deer found in Japan. (Century Dict.) 
Sikaillus Hevupre, 1898. Ungulata, Artiodactyla, Cervide. 
Mém. Hist. Nat. Empire Chinois, IV, pt. 2, pp. 98-111, pls. xiv-xix, xx, 1898; 
Errna, Cat. Sist. Fauna Filipinas, I, 34, 1895. 
Sikailus HEvDE, ibid., p. 110. 
Species, 13: Cervus sika Temminck & Schlegel, Sikaillus infelix Heude, S. daimius 
Heude, S. rex Heude, S. paschalis Heude, S. regulus Heude, S. aceros Heude, S. 
sicarius Heude, S. dejardinius Heude, S. consobrinus Heude, S. marmandianus 
Heude, S. /atidens Heude, and S. brachypus Heude, from the Goto Islands, Japan. 
Sikaillus: Dim. of Sika. 
Sikelaphus Heupn, 1894. Ungulata, Artiodactyla, Cervid:e. 
Mém. Hist. Nat. Empire Chinois, II, pt. m1, 146-149, 1894; LvpEkkzn, Deer of 
all Lands, 124, 1898. 
Type: Sikelaphus soloensis Heude, from the Sulu Islands, Philippine Islands. 
Sikelaphus: Sika; +-Elaphus. 
Silenus (subgenus of Cynocephalus) Gorprvss, 1820. Primates, Cercopithecide. 
Handbuch Zool., IT, 479, 1820; Lesson, Compl. CEuvres Buffon, IV, 100, 1854. 
Revue Zoologique, Paris, II, 70, Mar., 1839 (raised to generic rank); Nouv. 
Tableau Régne Animal, Mamm., 5, 1842. 
Type: Cynocephalus silenus (Schreber), from Ceylon. 
Silenus: ZieiÀAnvos, leader of the satyrs—more appropriate than most of the 
mythological names that have been applied to monkeys. 
in allusion to the 



* Credited to Lydekker, who does not recognize the genus, but gives sica as the 
spelling of the specific name (Prev. Zool. Soc., London, 1897, 39). 
