ALLACTAGA—ALOUATTA. 89 
Allactaga F. Cuvier, 1836. Glires, Dipodid:e. 
Proc. Zool. Soc. London, 1836, 141—142. 
Alactaga CvviER, Trans. Zool. Soc. London, II, 153, 1858. 
Type: Dipus alactaga (= Mus jaculus Pallas) from southern Russia and south- 
western Siberia. ‘‘A distinct genus for the Jerboas, with five toes, adopting 
the name Allactaga, given by Pallas to a species, as the common generic 
appellation." — (CuvrER.) 
Allactaga: Alak-daagha, the Mongol name for,Dipus jaculus; from alak, varie- 
gated; daagha, colt. (Parras, Glires, 291, 1778.) 
Allodon Marsn, 1881. Allotheria, Bolodontidze. 
Am. Journ. Sci. & Arts, 3d ser., XXI, 511-512, June, 1881. 
Type: Allodon laticeps Marsh, from the Upper Jurassic ( Atlantosaurus beds) of 
Wyoming. 
Extinct. Based on *'a left upper jaw, with molar and premolar teeth." 
Allodon: &AAoc, other, strange; 0d6@v -080vc, tooth—in allusion to the 
premolars.* 
Allomys Marsn, 1877. Glires, Sciuridze ( Allomyidz). 
Am. Journ. Sei. & Arts, 3d ser., XIV, 253, fig. in text, Sept., 1877. 
Type: Al/omys nitens Marsh, from the Miocene (John Day) of Oregon. 
Extinct. 
Allomys: &AAÀos, other, strange; 0s, mouse. ‘‘ Probably related to the flying 
squirrels, but the teeth are somewhat like those of ungulates."  (Manmsn.) 
Allops Mansu, 1887. Ungulata, Perissodactyla, Titanotheriidze. 
Am. Journ. Sci. & Arts, 3d ser., XX XIV, 331, Oct., 1887; Osborn, Bull. Am. 
Mis Natweist. NY.» X V1, 102-103; fig: 7, 1902: 
Type: Allops serotinus Marsh, from the Oligocene ( Brontotherium beds) of South 
Dakota. 
Extinct. Based on ‘‘a well-preserved skull and various other remains. 
Allops: &AAos, other, strange; 6, aspect—‘‘another genus nearly relatea to 
Brontotherium," in addition to Brontops, Menops, and Titanops. 
23. 
Alobus (subgenus of Vespertilio) PETERS, 1867. Chiroptera, Vespertilionide. 
Monatsber. K. Preuss. Akad. Wiss., Berlin, 707, Nov., 1867. 
Type: Vespertilio ( Alobus) temminckii Rüppell, from northeast Africa. 
Name preoccupied by Alobus Le Conte, 1856, a genus of Coleoptera. 
Alobus: &Aofos, without a lobe—in allusion to ‘den giinzlichen Mangel eines 
Spornlappeus.’ 
Alopex Kaur, 1829. Ferz, Canidee. 
Entw.-Gesch. & Natürl. Syst. Europ. Thierwelt, I, 83, 85, 1829. 
Type: Canis lagopus Linnzeus, from Arctie Eurasia. 
Alopex: &Acz9&, fox. 
Alopsis RarixEsQUE, 1815. Feree, Canide. 
Analyse de la Nature, 59, 1815 (nomen nudum). 
Type: Canis sp. (‘Alopsis R. sp. do.’ [espéce du genre précédent, Canis]). 
Alopsis: Contraction of @Aw7ds, fox; 6wis, appearance. 
Alouatta Lac£ÉPrkpE, 1799. Primates, Cebidee. 
Tableau des Divisions, Sous-divisions, Ordres et Genres des Mammiferes, 4, 1799; 
Nouv. Tableau Méthod. Mamm., in Buffon’s Hist. Nat., Didot ed., Quad., XIV, 
148, 1799; Mém. l'Institut, Paris, III, 490, 1801; MurnnuEAD, in Brewster's 
Edinburgh Encyclopedia, XIII, 404, 1850; Mituer & Renn, Proc. Boston Soe. 
Nat. Hist., XX X, 296-297, Dec., 1901 (type fixed). 
Aluatta FiscHER, Zoognosia, II, 549-552, 1813; Snack, Proc. Acad. Nat. Sci. 
Phila., 1862, 515-519. 

* Marsh says: **'There are 5 premolars and 2 molars." Two of the former are now 
regarded as molars. 
