PANTOTtlERIA MONOTllEMATA. 
Mamm. 31 
PANTOTHERIA. 
Docodon striatus, g. & sp. nn. (foss.), O. C. Marsh, Am. J. Sci. (3) xxi. 
p. 612, Atlantosaurus beds. Nearly allied to Di 2 )locynodon [c£. Zool. Rec. 
xvii. Mamm. p. 29]. 
Dryole[i]stes gracilis^ sp. n. (foss.), O. C. Marsh, Am. J. Sci. (3) xxi. 
p. 613, Atlantosaurus beds. 
Triconodon mordax. Notes on a lower jaw of this species (?) from the 
Purbeck beds (with an introductory note by H. Willett) ; E. W. Willett, 
J. G. S. xxxvii. pp. 376-380. 
ALLOTHERIA. 
Allodon laticeps, g. & sp. nn. (foss.), O, C. Marsh, Am. J. Sci. (3) xxi. 
p. 61 1, Atlantosaurus beds. It should probably be placed in the JPla- 
giaulacidoi. 
A Ctenacodon [cf. Zool. Rec. xvi. Mamm. p. 27] nanus, sp. n. (foss.), O. C. 
Marsh, Am. J. Sci. (3) xxi. p. 612, Atlantosaurus beds. 
Ptilodus medimvus, g. & sp. nn. (foss.), E. D. Cope, Am. Nat. xv. p. 922. 
“ Lowest Eocene” of New Mexico. Allied to Plagiaulax and Ctenacodon. 
MONOTREMATA. 
OllNITHORRHYNCHIDAi). 
Ornithorrkynchus paradoxus. 
See Pritchard, U. {supra, p. 7). 
Tachyglossida^). 
^ Tachyglossus hystrix. On its habits; G. T. Bennett, P. Z. S. 1881, 
pp. 737-739. 
