Lect. VIL] WORKING OUT OLD STRAINS. 185 



with many of tlie members of that much-extinguished 

 Order. Other types, not thus confused in their ambi- 

 tion, worked out the okl strain of Metatherian degrada- 

 tion, and taking to one definite line of ascent, put on 

 new specialisations in harmony with their surroundings, 

 and to this day their descendants are the rulers of the 

 forest and the field. 



ADDENDUM TO LECTURE YIL 



Bibliographical References. 



Allmax, Prof. George J., F.R.S., "On the Characters and Affinities 



of Potamogale," Trans. Zool. Soc, vol. vi. phates i. ii., woodcuts 



hgs 1-9, pp. 1-16.1 

 Alston, E. N"., " On an Undescribed Shrew from Central America," 



Proc. Zool. Soc, 1877, pp. 445, 446. 

 Anderson, John, M.D., " On the Osteology and Dentition of Hylo- 



mys," Trails. Zool. Soc, vol. viii. art. 13, plate Ixiv. pp. 453- 



467 (1874). 

 Austen, ^N". J., " On the Habits of the Water Shrew (Crossopits 



fodiens), Proc Zool. Soc, 1865, pp. 519-521. 

 Barboza der Bocage, Dr J. V., " Sur qnelques Mammiferes pen 



connns, d'Afrique Occidentale, qui se trouvent au Museum de 



Lisbonne," Proc. Zoo?. aS'oc, 1865, pp. 401-404. {Bayonia velox 



vel Potamofjale velox.) 

 Brandt, J. F., " On Solenodon," Memoirs of the ImiDerial Academy 



of St Petershurg, 1832-3. 

 CouES, Elliot, " Precursory Notes on American Insectivorous 



Mammals with Description of JSTew Species," U. S. Survey. 



"On Scapanus Americanus," American Naturalist, Xo. 13, 



p. 189 (1879). 



'' In this paper, besides the excellent figures illustrating the anatomy of this, 

 the noblest of the Insectivorous types, there is a splendid coloured plate (i.) from 

 one of Wolf's originals. Every such plate is an invaluable addition to zoology. 



