1906.] ON' ABNORMAL DENTITIOX IX A CAPYBARA. 761 



stated to this Society (see P. Z. S. 1904, vol. ii. p. 180). In his 

 letter published in the ' Easier Nachrichten ' of May 22nd, 1904 

 (of which I produce a copy), Dr. David distinctly says— "Also, 

 Ende November schoss ich (als erster Weisser) eine Okapiar Why 

 the statement of Capt. Powell-Cotton's native hunter (who alleges 

 that he shot the specimens sent home by Dr. David) should be 

 preferred to that of a European scientific man, I cannot under- 

 stand. The stories of native Africans on such subjects are not 

 always reliable. 



I may add that I have examined most of the accessible speci- 

 mens of the Okapi as yet received in Europe, including the very 

 fine male example recently mounted by Mr. Rowland Ward, and 

 am strongly of opinion that there are no sulficient grounds for 

 considering that there is more than one species of Okapi {Okapia 

 johnstoni). The 0. liebrechtsi of Major* and 0. erikssoni of 

 Lankester f are, I believe, based upon individual variations. 



Mr. Arthur Dicksee exhibited a strange variety of the cock 

 Golden Fheaseint {Thaumcdea 2}icta) that he himself had bred in 

 1905, the colouring of which was about half way between the 

 normal colour of the first and second moults, with the excej)tion 

 of the fact that the back was a most brilliant scarlet. Mr. Dicksee 

 considered this to be a case of arrested development and believed 

 that the bird would come correctly to colour at the next moult. 



Mr. Horace 0. Beck, F.Z.S., exhibited a skull of a Capybara 

 (ffydroc/uerus capyhard) in which the first premolar of the left 

 side of the lower jaw had overgrown in such a way as to chamfer 

 off the corresponding edge in the upper jaw, and also to cut 

 away a considerable portion of the bone. The lower tooth was 

 extremely loose in its socket, but this may have been caused by 

 the pushing-out effect of the two chamfered edges of the teeth. 

 The whole skull showed considerable signs of disease. Perfo- 

 i-ations were present through the outer lamina of the ramus into 

 the cavity of the last molar on each side, and several of the other 

 teeth showed signs of decay. 



Prof. E. A. Minchin, F.Z.S., exhibited some diagrams of Trypa- 

 nosomes from Tsetse-flies and made remarks on the dissemination 

 of diseases by these insects. 



The following papers were read : — 



* P. Z. S. 1902, vol. ii. pp. 72, 343. 



t Trans. Z. S. vol. xvi. p. 279; Ann. & Mag. N. H. x. (ser. 7) p. 417; P. Z. S. 

 1903, vol. ii. p. 338. 



51* 



