THE BIRDS OF THE NATUNA ISLANDS 



39 



Adult male, U.S.N.M. No. 174702, Pulo Lingung, June 14, 1900. 

 Length in flesh, 762 mm, "Iris dark brown." 



Adult female, U.S.N.M. No. 174707, Bunguran Island, June 23, 

 1900. Length in flesh, 787 mm. 



All the adults are in progress of molt, most of them of some wing 

 quills, rectrices, and contour feathers. The single juvenal male (No. 

 174705) also shows evidences of molt among the body feathers, though 

 the wings and tail seem to be intact. In the juvenal bird the bill is 

 not yet of full size and the casque not yet grown to its full size, ver- 

 tically, latitudinally, or longitudinally, and is anteriorly ^\^thout the 

 sharp vertical angle of the adult, but merges convexly into the culmen. 

 The plumage resembles that of the adult except on the tail; the black 

 portions are duller and more brownish, especially on the head, neck^ 

 and jugulum. The black markings on the bill, characteristic of the 

 adult, are absent. 



Doctor Abbott reported this hornbill common on Bunguran Island. 

 Doctor Hartert has recorded it on also Pulo Pandak and Pulo Laut.'* 



This new race is apparently confined to the Natuna Islands. 



Measurements of the specimens collected by Doctor Abbott are 

 given in Table 8. 



Table 8. — Measurements of specimens of Hydrocissa convexa zamelaena 



> Measured in the flesh by the collector. 



•ANORRmNUS GALERITUS (Temminck) 



' Type. 



Buceros galeritus Temminck, Nouveau recueil de planches colorizes d'oiseaux, 

 vol. 2, livr. 88, texte to pi. 520, p. [1], May 14, 1831. ("Sumatra et de la 

 partie occidentale de Borneo.") 



Doctor Hartert has recorded this species " from Bunguran Island 



M Nov. Zool., vol. 2, no. 3, p. 474, Aug. 17, 1895. «' Nov. Zool., vol. 2, no. 3, p. 475, Aug. 17, 1895. 



