284 PALEONTOLOGY. 



suggested that these may be the young of Zanclodon, which perhaps 

 is identical with Teratosaurus. E. B. T. 



Klippart, John H. Discovery of Bicotyles (Platygonus) comj>ressus, 

 Lc Conte. Cincinn. Quart. Journ. Sci. vol. ii. pp. 1-6. 



Describes the discovery of the bones of a dozen individuals of 

 Dicotyles compressus in post-glacial sands, within the limits of the citv 

 of Columbus, Ohio. H. A. N. 



KreflFt, G. Remarks on the Working of the Molar Teeth of the 

 Diprotodons. Quart. Journ. Geol. Soc. vol. xxxi. pp. 317, 318. 



Accompanied by a woodcut of a premolar and 4 molars of Diproto- 

 don minor, Huxley. Criticises one of Prof. Owen's figures of the lower 

 molars of Diprotodon as being in a too unabraded state ; for when the 

 last tooth breaks through the gum in this genus, the first of the series 

 is always worn flat. Also states that in the Phalangistidce the female 

 is often larger than the male, whereas amongst the Kangaroos it is 

 exactly the reverse. R. E., Jun. 



. Remarks on Prof. Owen's Arrangement of the Eossil Kan- 

 garoos. Ann. Nat. Hist. ser. 4, vol. xv. pp. 204-209. See also 

 Sydney Mail, Dec. 2Q, 1874. 



Considers that the whole of the Australian extinct and living 

 Marsupials are ofl'shoots of an extinct animal comprising the dental 

 structure of both the carnivorous and herbivorous sections of the sub- 

 order, and of which Thylacoleo was the last representative. All the 

 marsupials can be received in one of two groups: — 1. Those with a 

 pair of small conjoined inner toes ; 2. Those without the conjoined inner 

 toes. If the fossil species must be divided into several genera, the 

 author thinks that the arrangement proposed in his " Australian Ver- 

 tebrata, Eossil and Recent " cannot well be discarded. R. E., Jun. 



Lawley, Robert. Dei Resti di Pesci fossili del Pliocene Toscano.] 

 [Pliocene Eossil Eishes of Tuscany.] Atti Soc. Tosc. Nat. Sci. 

 Fisa, t. i. fasc. 1, pp. 59-66. 



Observations sur une Machoire fossile provenant du genre 



Sphcerodus, trouve'e en Toscane dans le Pliocene de Yolterrano. 



[Eossil Mandible of Sphcerodus from Pliocene of Yolterrano.] 



Journ. Zool. vol. iv. pp. 511-515, pi. xvii. ; and Atti Soc. Tosc. 



Nat. Sci. Pisa, t. ii. fasc. 1, pi. 1. 



The almost complete upper and lower jaws of Sphcerodus cinctus, 



obtained from this locality, show that the anterior teeth of both jaws are 



conical and pointed, while the posterior ones are hemispherical. 



E. T. N. 



Leidy, Prof. Remarks on a Coal Eossil, etc. Proc. Ac. Nat. Sci. 



Philadel. pt. i. p. 120 ; woodcut. 

 An impression in coal-shale, which " might be that of the tail of a 

 relative of the Ceratodus, or of a huge tadpole." 



