28 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



MELITTOPHAGUS GULARIS (Shaw and Nodder). 



Merops giilaris Shaw and Nodder, Nat. Misc., IX, 1798, pi. 337. 

 Melittophagus giilaris Gray, Gen. Birds, 1, 1846, p. 86, pi. 30. 



Two specimens, male and female. "Bill and feet black; iris crim- 

 son." 

 Male. — Length, 219.5 mm. ; extent, 304 mm. 

 Female. — Length, 205 mm. ; extent, 297 mm. 

 There seems to be no observable difference in color between the sexes. 



Family BIJCEROTID^. 



ORTHOLOPHUS LEUCOLOPHUS (Sharpe). 



Berenicornis leucolophua Sharpe, Zool. Eec. for 1871, 1873, p. 54. 

 Ortholophus leiicolophus Grant, Cat. Birds Brit. Mus., XVII, 1892, p. 426. 



One female, taken April 30, 1897. Length, 684 mm.; extent, 650 

 mm. This is an immature specimen, with black throat, and agrees 

 with the description of the young of leucoloplms given by Mr. Ogilvie- 

 Grant,^ except for the presence of a conspicuous buff'y white spot on 

 the outer webs of most of the primaries. 



LOPHOCEROS SEMIFASCIATUS (Hartlaub). 



Buceros semifasciatus Hartlaub, Journ. fiir Orn., 1855, pp. 356, 361. 

 Lophoceros semifasciatus Shelley, Ibis, 1888, p. 59. 



A pair of adult birds is in the collection. According to Mr. Ourrie's 

 notes, both were shot in the forest near the clearing at Mount Coffee. 

 The English-speaking Liberians call this species "Palm bird," while 

 the Golah name is "Pwehah-pwehah." 



One of the specimens was taken February 23, the other March 19, 

 1897; both show indications of a molt not quite completed. The naked 

 skin on the sides of the throat is slate black, not blue, as given by Mr. 

 Ogilvie-Grant.^ The feet and the bare skin encircling the eyes are also 

 black. 



Male. — Length, BOO mm. ; expanse, 800 mm. 



Female. — Length, 570 mm,; expanse, 800 mm. 



HORIZOCERUS,« new genus. 



Chars, gen. — Genus generi "Lophoceros" dicto affine, sed cauda 

 valde cuneata, rostro prope recto, hujus cornu minimo, acute carinato, 

 facile distinguendum. 



TyiJe. — Toccus hartlaubi Gould. 



The strongly wedge-shaped tail, comparatively straight bill, with its 

 very small, sharply keeled casque, to say nothing of conspicuous color 

 differences, appear fully to justify the creation of a separate genus for 



' Cat. Birds Brit. Mus., XVII, 1892, p. 426. ^ 6piZ,a), limito; uepai, cornu. 



2 Idem., p. 401. 



