RECENT ADVANCES IN SCIENCE 293 



pendent of sex. Comparison with other data indicates that in 

 animals with indeterminate growth, the external form is estab- 

 lished early in post-embryonic life, and is adhered to more or 

 less therefrom ; but in animals with determinate growth, the 

 external form changes during the growth period ; as soon as the 

 form becomes constant growth ceases. 



The third and last instalment of Boulenger's account of 

 " On the Lizards allied to Lacerta muralis, with an Account of 

 Lacerta agilis and L. parva " is given in Proc. Zool. Soc. (April 

 1916). A full discussion of the evolution of the colour pattern 

 in these forms is given, and the author agrees in the main with 

 Eimer, but carries the original pattern back to a much more 

 primitive one. Moodie (Jour. Morph. vol. xxvii. 1916) finds 

 that " The Structure and Growth of the Plesiosaurus Propodial " 

 is essentially similar to that of mammalian limb bones. 

 I.B.J. Sollas and W. J. Jollas (Phil. Trans. Roy Soc. vol. ccvii. 

 B) have examined another skull of Dicynodon, and are enabled 

 to add supplementary details regarding the occiput, palate, 

 ethmoidal and otic regions. 



Bate (Proc. Zool. Soc. May 191 6) deals mostly with bird 

 remains in her paper "On a Small Collection of Vertebrate 

 Remains from the Har Dalam Cavern, Malta, with Note on a 

 new Species of the Genus Cygnus." An incomplete sternum of 

 a gigantic carinate bird from the Eocene of Nigeria is described 

 by Andrews (Proc. Zool. Soc. May 1916). 



Pocock writes " On some of the External Structural 

 Characters of the Striped Hyaena (Hycena hyarna) and related 

 Genera and Species " (Ann. and Mag. Nat. Hist. April 1916), 

 " On some of the External Characters of Cryptoprocta " (ibid. 

 June 191 6) and again " On the External Characters of the 

 Mongooses (Mungotidce) " (Proc. Zool. Soc. April 191 6). "A 

 new Rat from Tenasserim " is recorded by Thomas (Ann. and 

 Mag. Nat. Hist. June 1916), who also discusses " The Races of 

 Dremomys pernyi " (ibid. May 191 6). In the same number of 

 the Annals and Magazine of Natural History Blackler has a 

 note " On a new Species of Microtus from Asia Minor. The 

 Sitatungas (Limnotragus) of the Sesse Islands are divided into 

 two races by Meinertzhagen (Proc. Zool. Soc. April, 1916), one 

 on Bugalla Island similar to the form on the mainland, and 

 another subspecies on Nkose Island. An interesting account 

 of the skull of Chrysochloris hottentofa and C. asiatica is given by 



