282 Capt. G. E. Shelley on the 



My description is taken from a specimen in my own col- 

 lection labelled '^Mauritius (Van Dam)." 



III. Palumbus. . Type. 



Palumbus, Kaup, Nat. Syst. 1829, p. 107 . . P. palumbus. 

 Stidoenas, Reichb. Taub. 1855, p. 59 ... P. arquatrix. 



All the members of this genus are of comparatively large 

 size, and have the upper portion of the tarsus near the knee- 

 joint feathered. 



I shall include six species in the genus ; of these, two only, 

 P. polleni and P. arquatrix, belong properly to the African 

 Region, the other four, P. palumbus, P. trocaz, P. bollii, and 

 P. laurivorus, to the Western Palsearctic Region. 



Key to the Species. 



a. General plumage nearly uniform brown, with no 



white spots on the wings 8. polleni, 



b. Wing-coverts and chest spotted with white ; biU and 



legs lemon-yellow 9. arqrmtrix. 



c. With none, or only a small portion, of the plumage 



brown ; wing-coverts and chest with no white spots ; 

 bill and legs not lemonryellow. 

 c\ With a large patch of white on the sides of the 



neck and a white patch on the outer wing-coverts. 10. palumbus. 

 d}. With no white on the plumage. 

 d^. With a broad pale central bar across the tail. 

 d?. Vinous of the underparts restricted to the 



upper half of the chest 11. trocaz. 



e". Vinous of the underparts extends over the 



whole chest and portion of the abdomen . . 12. bollii. 

 e^. With no bar on the tail 13, laurivonis, 



8. Palumbus polleni. 



Columba polleni, Schl. Ned. Tijdschrift v. d. Dierk. iii. 

 1866, p. 88, Mayotte; id. P. Z. S. 1866, p. 424; Schl. & 

 Poll. Faun. Madag. Ois. 1868, p. 112, pi. 35 (good) ; Hartl. 

 Yog. Madag. 1871, p. 267 ; E. Newton, P. Z. S. 1877, 

 pp. 300, 302, Anjuan ; Shelley, P. Z. S. 1879, p. 778, Anjuan. 



Stictoenas polleni, Schl. Mus. P.-B. iv. 1873, p. 72. 



Entire plumage nearly uniform brown ; a collar at the 



