SPECIAL WORK. 
Mamm. 41 
q. fTlTANOTHERIlDAS. 
f Menodus angustigenis ; Haplacodon [Zool. Rec. xxvi, Mamm. p. 40] 
is identified by E. D. Cope, Contr. Canad. Pal. iii (supra, p. 6), p. 13, 
with Menodus ( Titanotherium ), with description of the specimens. 
f Menodus selwynianus , n. sp., Cope, Am. Nat. xxiii, p. 628 (1890), 
Miocene, Canada ; described, op. cit. p. 17. 
f Menodus syceras , n. sp., Cope, Am. Nat. xxiii, p. 628 (1890), ibid ; 
described, Contr. Canad. Pal. iii, p. 18. 
f Allops crassicornis, n. sp., 0. C. Marsh, Am. J. Sci. (3) xlii, pp. 268 
& 269, Miocene, Dakota. 
f Brontops vallidus , n. sp., Marsh, t. c. p. 269, ibid. 
f Titanops medius, n. sp., Marsh, l. c., ibid. 
G. — ARTIODACTYLA. 
Piana, G. P. Dei Denti Incisivi e Canini Superiore nei Bovina e negli 
Ovini e dell Organo di Jacobson nell’ Uomo. Monit. Zool. Ital. ii, 
pp. 44-47. 
Further observations on the presence of germs of cutting-teeth in the 
upper jaws of Oxen and Sheep, together with a notice of the presence of 
Jacobson’s organ in Man. 
Thomas, 0. Notes on some Ungulate Mammals. P. Z. S. 1891, pp. 
384-389. 
This paper deals exclusively with selenodont Artiodactyles. The first 
section is devoted to the Tragulidce , where Tragulus kanchil is identified 
with T.javanicus , and a synopsis of the genus given ; the name Dorca- 
therium is adopted in place of Hyomoschus. The second section deals 
with the Llamas and Alpacas, for which the name Lama is adopted ; and 
it is considered that both the Llama and the Alpaca are derived from the 
Huanaco. The third section gives a synopsis of the range and number 
of the species of Tragelaphus , in which it is concluded that T. decula 
and T. sylvaticus are varieties of T. scriptus . Oreotragus is regarded as 
distinct from Nanotragus. 
Zander, R. Schlundkopfes des Wiederkauer. SB. Ges. Konigsb. 1890, 
p. 6. 
Contrasts the structure of the nasal region of the skull of the Rumi- 
nants with that of other Mammals. 
r. Bovidji. 
Huet, J. Les Bovides. Bull. Soc. Acclim. 1891, i, pp. 1-15 & 334-350, 
figs. 
A. synopsis of the various species of Oxen. 
