On the Lizards allied to Laceita mural is. 24:7 



Linnaeus, dating from the tenth edition of the ( Systema,' 

 should clearly replace the more familiar name campeatris tor 

 the Pampas Deer. 



15. Pontoporia blainvillei } Gray. 

 Skull picked up on sea-coast. 



16. Dasypus villosuS) Desni. 

 <J. 2074. 



17. Didelphis paraguayensis, Oken. 

 c?. 2060, 2065; ? . 2055, 2059, 2061. 



18. Lutreolina (g. n.) crassicaudata, Desm. 

 Didelphis or Metachirus crassicaitdata auct. 



cJ. 2093. 



1 take this opportunity to give a special generic name to 

 the Thick-tailed Opossum, whose many peculiarities, external 

 and cranial, amply entitle it to that distinction. Its charac- 

 teristics are fully described in the 'Catalogue of Marsupials.' 



XXXIV. — Rimarks on Prof. L. von Mehely's recent Contri- 

 bution to the Knowledge of the Lizards allied to Lacerta 

 muralis*. By G. A. Boulenger, F.K.S. 



The first part of Prof, von Mehely's work on the Wall- 

 Lizards, which, as the author announced a few years a^of, is 

 intended to lead to the much desired solution of the perplexing 

 problem of the distinction, definition, and phylogeny of the 

 species of this interesting group, has at last appeared ; and I 

 cannot refrain from offering a few critical remarks on a piece 

 of work which, valuable as it proves to be for the mass of 

 information it contains, although somewhat disappointing 

 with regard to the study of the variations of the skull J, has 



* Ann. Mus. Hung. (Budapest) vii. 1909, p. 407 (received Jan. 1910) 



t Op. cit. v. 1907, p. 84 and p. 469. 



J In a previous contribution in reply to my criticisms (1907, p. 471) 

 Prof. v. Mehely observed, as regards the specific characters of the skulls : 

 "Freilich ist es nothig von mancher Art ein Uutzend und mehr Schadei 

 zu priipariren um das wahrhaftigCharakteristischeherauszuhnden, da die 

 Schadelknocken in demselben Maasae variiren, wie jedes andere Orjjau." 

 I was therefore under the impression that his knowledge of the specific 



