40 Mamm. 
II. MAMMALIA. 
p. 185 (1900) and P. Soc. Washington xiv, p. 92, Thomas, Amer. 
Natural, xxxv, p. 143, and Rehn, t. c. p. 147; D. yucateinensis 
cozumelce , Cozumel Id., Merriam, P. Soc. Washington xiv, p. 101, 
marsupialis texensis , Texas, p. 172, m. tabuscensis , Mexico, p. 173, 
richmondi , Nicaragua, p. 175, Allen, Bull. Amer. Mus. xiv, n. sp. & 
subspp. 
Metachirus nudicaudatus phceurus , Ecuador, Thomas, Ann. Nat. Hist. (7) 
vii, p. 545; fuscogriseus paliidus, Orizaba, p. 215, grisescens, Colombia, 
p. 217, nudicaudatus boliviensis, Bolivia, p. 411, Allen, Bull. Amer. 
Mus. xiv : n. sp. & subspp. 
Caluromys laniger pyrrhus , Colombia, Thomas, Ann. Nat. Hist. (7) vii, 
p. 196, n. subsp. 
Marmosa fulviventer, San Miguel Id., Bangs, Amer. Natural, xxxv, p. 632, 
n. sp. 
X. MONOTREMATA. 
Skull, Bemmelen, P. Ac. Amsterdam 1901, p. 405, Denk. Ges. Jena 
vi—Semon’s Reise iii, p. 731; jaws and muzzle, Goppert, Denk. 
Ges. Jena, op. cit. p. 535; nervous system, Ziehen, t. c. p. 679; 
auditory organs, Denker, t. c. p. 637; milk-glands, Eggeling, ibid, 
iv, p. 175; foot, Sixta, Zool. Anz. xxiv, p. 321; medulla oblongata 
and corpora quadrigemina, Koelliker (140). 
Echidna , eight cervical vertebrie in, Broom, P. Linn. Soc. N. S. Wales 
1900, p. 733; feet, Emery, Denk. Ges. Jena vi—Semon’s Reise iii, 
p. 665. 
Ornithorhynchus , reproduction, Metcalfe, P. Zool. Soc. London 1901, ii, 
p. 624. 
