Degeneration in the Teeth of Cxen and Sheep. 291 



may possibly cover it in very fresli specimens. Thorax and 

 scutellum blackish, covered with superincumbent goldeu- 

 yellow pubescence, and longer hairs of the same colour at 

 the sides, on the posterior border of thorax, and on the 

 scutellum ; breast covered with tawny touientum and with 

 some long white hairs. Abdomen reddish yellow, with some 

 tawny tomeutum and covered with appressed golden-veilow 

 pubescence, with which is intermixed black pubescence of 

 the same nature, apex of abdomen becomes somewhat darker ; 

 underside paler- coloured with white pubescence. Legs 

 reddish yellow ; the tibiae paler j^ellow ; the tarsi dusky ; 

 pubescence chiefly black Avith some white hairs on coxte 

 and on the femora. Wings clear ; stigma yellowish ; veins 

 reddish yellow; appendix very long and curved in the type, 

 but not so long in the other female. 



Male is altogether paler in appearance. Eyes with the 

 large facets taking up two-thirds of the surface, reaching 

 beyond the apex of the frontal triangle, but not quite reaching 

 the vertex, so that a narrow border of the small facets 

 extends to the vertex. Thorax with the pubescence a dirty 

 white colour and much longer ; this applies also to the 

 scutellum. Abdomen with the same-coloured pubescence on 

 a paler ground-colour. Legs rather paler in colour. 



A female from S. Queensland {Dr. T. L. Bancroft), 

 1908, 72, has the legs wholly redtiish yellow, and the pubes- 

 cence on thorax and abdomen paler in colour. 



XXIII. — Notes on D* generation in the Tedh of Oxen and 

 Sheep. By J. VViLFiiiD Jackson, F.G.S. (Assistant- 

 Keeper, Manchester Museum). 



In a Report on the Animal Remains discovered at Corsto- 

 pitum (Corbridge-on-Tyne) "^ Messrs. A. Meek and R. A.H. 

 Gray call attention to the absence of the first lower pre- 

 molar tooth in several jaws of oxen found on the site. This 

 form they considered distinct from the domesticated cattle 

 {Dos tanrxis, var. (ongifrons) of Roman and earlier times, and 

 it was accordingly described by them as a new wild species, 

 viz. Bos sylvestris. They further state that this species is 

 represented to-day by the Chillingham herd, in which there 

 is apparently a similar absence of the first lower premolar. 



* ' ArchtiBol. i-Eliaua,' 3 ser, vii. 1911, pp. 99 et seq. 



