3 io SCIENCE PROGRESS 



Amphibia the neural canal does not end blindly in the urostyle, 

 but comes through on to the dorsal side (Proc. Zool. Soc. 

 June 1 191 5). Two new tree-frogs from Sierra Leone are de- 

 scribed by E. G. Boulenger {Proc. Zool. Soc. April 191 5). G. A. 

 Boulenger gives an account of all the known snakes from 

 Madagascar, Comoro, Mascarenes, and Seychelles, where no 

 terrestrial form is dangerously poisonous to man (Proc. Zool. 

 Soc. May 191 5), and also another account of those from the 

 Belgian and Portuguese Congo, Northern Rhodesia, and Angola, 

 in which two new forms are included (Proc. Zool. Soc. April 

 191 5). The anatomy of certain Gruiform birds is dealt with 

 by Mitchell (Proc. Zool. Soc. May 191 5). Two other papers 

 deal with birds ; in the first Blakeslee and Warner discuss 

 correlation between activity in egg-laying and the presence of 

 yellow pigment in domestic fowls (American Naturalist, June 

 191 5) ; in the second Haig-Thomas gives the numbers of dark- 

 necked and ringed male peasants shot in two successive seasons, 

 and claims that they indicate continual Mendelism in this 

 character in hybrid birds (Proc. Zool. Soc. April 191 5). Broom 

 has published a very interesting series of papers, some palae- 

 ontological and some anatomical. Of the former one describes 

 a number of carnivorous Therapsids from the British Museum 

 whose small size and state of preservation had not allowed 

 of their earlier recognition (Proc. Zool. Soc. April 191 5); 

 another discusses the Anomodont genera Pristerodon and 

 Tropidostoma (Proc. Zool. Soc. May 191 5) ; and the third 

 treats of certain Triassic Stegocephalians (Proc. Zool. Soc. 

 June 191 5). The two anatomical papers give a detailed account 

 of the organ of Jacobson in the Insectivora, and show that 

 considerable differences in its relations are to be found. Part I. 

 concerns Tupaia, Macroscelides, and Gymnura (Proc. Zool. 

 Soc. April 191 5), and Part II. Talpa, Centetes, and Chryso- 

 chloris (ibid. May 191 5). A new genus and species of fossil 

 mammal related to ALluropus have been obtained from Burma 

 and recorded by Woodward (Proc. Zool. Soc. June 1915). 

 Thomas has a long series of papers relating to mammals in the 

 Annals and Magazine of Natural History , viz. : — The " baculum," 

 or penis bone, can be used as a guide in classifying certain 

 squirrels ; descriptions are given of (a) the various geographical 



1 With this one exception the month given is that in which the paper was read 

 before the Zoological Society, and not the month of publication. 



