MONOTREMATA. 295 



47795. The left half of a mandibular symphysis, with the anterio 



teeth. 



48404. Fragment of a mandibular ramus, with five cheek-teeth. 

 48406. Part of a mandibular ramus, showing three or four teeth. 



48248. Part of a mandibular ramus, with one cheek-tooth. 



48389. Part of a left mandibular ramus, with worn teeth (? Amblo- 

 therium or Achyrodon). 



47796. Part of a mandibular ramus, with the cheek-teeth in a broken 



condition. The teeth have comparatively broad crowns, 

 and the specimen may possibly belong to Bolodon (supra 

 p. 203). 



48361, An imperfect humerus. 



48249. A smaller humerus. 



48250. Two femora, agreeing in relative size with the preceding. 



B. From the Lower Jurassic Slate of Stonesfield, Oxfordshire. 



32752. The femur and humerus of a small mammal. Figured by 



(Fig.) Seeley in the ' Quart. Journ. Geol. Soc.' vol. xxxv. p. 456, 



figs. 1, 2. Presented by 8. P. Pratt, Esq., 1857. 



Subclass PEOTOTHEEIA. 

 Order MONOTKEMATA. 



Family ECHIDNID^E. 

 Genus ECHIDNA, Cuvier l . 



Syn. Tacky glossus, Illiger 2 . 



Proechidna (Acanthoglossus), Gervais, is included for palseontolo- 

 gical purposes in the type genus. 



Echidna oweni, Krefft 8 . 

 Syn. Echidna ramsayi, Owen 4 . 



Considerably exceeding in size the existing E. bruijnii of New 

 Guinea. 



Hab. New South Wales. 



1 Tabl. element. d'Hist. Nat. p. 143 (1798). 



2 Prod. Syst. Mainm. et Avium, p. 114 (1811). 



3 Ann. & Mag. Nat. Hist. ser. 4, vol. i. p. 113 (1868). 



4 PhiL Trans. 1884, p. 273. 



