GLIRES. 
Mamm. 21 
J. A. Allen, in a “ Synonymatic List of the American Sciuri” 
accepts Alston’s determinations, but differs on some questions of nomen- 
clature ; Bull. U. S. Geol. Surv. iv. pp. 877-887. 
Sciitrus harmandi, sp. n., A. Milne-Edwards, Bull. Soc. Philom. (6) xi. 
1877, p. 8, Island of Phu-cok, Gulf of Siam. 
v / Sciurus rujigenis, sp. n., W.T. Blanford, P. A. S. B. 1878, p. 72 ; J.A.S.B. 
xlvii. pt. 2, p. 156, pis. vii. & viii., Tenasserim. 
Sciurus hougensis^ sp. n., M. T. v. Heuglin, Nordost-Afr. ii. p. 69, N.E. 
Africa. 
Sciurus pyrrhopus^ S. stangeri, and S. isabdla. On their characters ; 
C. G. Giebel, Z. ges. Naturw. 1. (1877), pp. 308-311. 
Cynomys ludovicianus. On its habits ; S. W. Williston, Am. Nat. xii. 
pp. 203-208. 
Arctomys primigenius, sp. n. (foss.), K. T. Liebe, Zool. Gart. 1878, 
p. 39, bone caves of Thuringia. It is regarded as the probable ancestor 
of both A. marmotta and A. bohac. 
vj Plesiarctomys huccatus^ sp. n. (foss.), E. D. Cope, Wheeler’s Rep. Surv. 
W. of 100th Mer. iv. [1877], pt. 2, p. 171, Eocene of New Mexico. 
HAPLODONTIDiB. 
Haplodon rufus. On its habits [c/. Zool. Rec. xiv. Mamm. p. 20]; 
S. K. Lum, Am. Nat. xii. pp. 10-13. 
CASTORIDiE. 
Castor fiber. On its extinction (in 1841) in Livonia ; 0. V. Loewis, 
Zool. Gart. 1878, pp. 353-357. 
Muridj]. 
Gerbillus nigricaudus (p. 200), G. vicinus (p. 200), and G. pusillus 
(p. 20l), spp. nn., W. Peters, MB. Ak. Berl. 1878, East Africa. 
Meriones stygmonyx (p. 78), M. dongolanus (p. 79), and M. macropus^ 
spp. nn., M. T. v. Heuglin, Nordost-Afr. ii., N. E. Africa. 
Psammomys elegans, sp. n., M. T. v. Heuglin, tom. cit. p. 80, N. E. 
Africa. 
Oreomys^ g. n., M. T. v. Heuglin, tom. cit. p. 76 ; allied to Euryotis, 
[^Otomys^ F. Cuv.], but both upper and lower incisors with three sharp 
longitudinal furrows. Type, 0. typus^ sp. n., id. 1. c. p. 77, N. E. Africa. 
Dendromys pallidus^ sp. n., M. T. v. Heuglin, tom. cit. p. 74, N. E. 
Africa. 
Mus samharensis (p. 67), M. hereri\eri\sis (p. 67), if. ochropus (p. 68), if- 
rufidorsalis (p. 70), M. lateralis (p. 71), M. tacaziena (p. 72), if. pallescens 
(p. 72), and M. (?) galanus, spp. nn., M. T. v. Heuglin, tom. cit., N. E. 
Africa. 
Jiifws hildebrandti and M.fumatus, spp. nn., W. Peters, MB. Ak. Berl. 
1878, p. 200, East Africa. 
Mus rattus and if. alexandrinus. On their specific identity \cf. Zool. 
