Generic and Family Names of Rodents. 269 



Name, authority, and date. Type or included species. 



Adelomys Gervais, 1853 Therldomys vaillanti. (See Pseudoscinridce.) 



Archxomys Laizer & Parieu, 1839. New name for P(divomi/s Lai/. & Par. 



BlainvUlimys (Bravard MS.) Ger- 

 vais, 1848-'52 Therldomys olainvillei. 



Cournomys (Croizet) Zittel, 1893. Synonym of Issidioromys. 



Cuvierimys Bravard, 1848-'52. . . . Cuvierimys lauriUardi. 



Dipoides Jiiger, 1835 Species not named. 



Gergoviomys (Croizet MS.) Blain- 

 ville, 1840 Species not named. 



* Isoptychus Pomel, 1854 Therldomys {Isoptychus) jourdani, Isop- 



tychus auberyi, I. antiquus, I. cuiieri, 

 I. vassoni, Theridomys aqucdilis {f). 

 Issidioromys (Croizet MS.) Blain- 



ville, 1840 ... Issidioromys pseudanxma Gervais, 1848_ 



t Neomys Bravard, 1844 Neomys lembronicus (= Theridomys 



lemhr onions). 

 iVf soA;erocZon Schlosser, 1884 Isiodoromys minor. 



* Omegodus Pomel, 1854 Omegodus echimyoides. 



* Falamema Pomel, 1854 Palanvcma antiquus. 



t Palxomys Laizer & Parieu, 1839. . Palxomys arvernerisis. (See Archxouiys.) 



* Perrieromys Croizet (?) 



Protechimys Schlosser, 1884 Protechimys gracilis, P. major. 



*1i Txniodus Pomel, 1854 Echimys curvistriatus. 



Theridomys Jourdan, 1837 Species not named in first description. 



Trechomys Lartet, 1869 Trechomys honduellii. 



INCERT^ SEDIS. 



Anotis Rafinesque, 1815 Nomen nudum. 



Archilagus Hseckel, 1895 Hypothetical genus — ^\tavus omnium 



Rodentium.' 



Asteromys^ Ameghino, 1897 Asteromys pmnctiis, A. prospiciius. 



Budmny s{'Crovz.eV)Bra.ya,rd,lS4^ Nomen nudum. 



Cephalomys ^ Ameghino, 1897.. . . Cephalomys arcidens, C. })le.rus. 



Haplostropha Ameghino, 1891 . . . Haplostropha scalabriniana. 



Hystriocomys Giebel, 1860 Hystriocomys thuringiacus. 



1 Mixodectes"^ Cope, 1883 Mixodectes jmngens, M. crassiculus. 



Orchiom.ys^ Ameghino, 1897 Orchiomys prostavs. 



^ Cephalomyidse Ameghino, Bol. Inst. Geog. Argentino, XVIII, p. 592, 

 Oct. 6, 1897. 



^Mixodectidx Cope, Proc. Acad. Nat. Sci. Phila., p. 80, May 22, 1883. 



" The discovery of some skeleton fragments in good association with a 

 lower jaw of Mixodectus pungens makes it probable that this genus should 

 be removed from the Primates and placed as an extremely primitive Ro- 

 dent."— Matthew, Bull. Am. Mus. Nat. Hist. New York, IX, p. 205, 1897. 

 60— RioL. See. Wash., Vol. XI, 1897. 



