382 bucerottd.t;. 



10. RHYTIDOCEROS. 



Tvpe. 



Ehj'ticeros, Reich. Syd. An. pi. 1. (1849) R. inidulatus. 



Cako, lionap. Con»p. Gen. Av. i. p. 90 (18.'54) R. plicatus. 



Rhytidoceros, Cab. lij- Heine, Mus. Kein. ii. p. 172 (18G0) R. obscunis. 



Bill large, curved, and compressed. Casque, which covers the 

 basal two-fifths of the culmcn and docs not extend over the skull, 

 consists of a series of overlapping olilicjue plaits. Base of the 

 mandibles with or without grooved plates. Throat naked. Tail 

 subeqiial, white. Crest well-developed. 



Range. Throughout the greater part of the Malayan ArcliipeLigo 

 as far east as the Solomon Islands. 



Koj to the S^^ecien. 



I. Head and neck coloured. 



A. Base of both inaadibles covered with 



transverse ridges vndulatus S , V- ^>^'-^. 



r>. Base of both mandibles without trans- 

 verse ridges. 

 a. T(ip of head and occiput dark chestnut, 

 shading into black on the back of the 

 neck ; rest of head and neck white 



tinged with buff snf)ruJicol/i.< c? , p. "^^■ 



h. Head and neck briglit chestnut. 



a. Larger: wing 16-9 indies plicatus S -, P- -'SC. 



h'. Smaller : wing 12 inches narcondumi <S , p. •"386. 



II. Head and neck black. 



0. Biise of both mandibles covered with 



transverse ridges undulatm $ , p. .".82. 



D. Base of both mandibles without trans- 

 verse ridges. 

 c. Gular skin deep blue : size large, wir.g 



ca. 14-2 inclies s7ihruJicoll!^ 5 , p. .'384. 



(/. Gular skin white. 



c . Size larger : wing ca. 16-2 inches . . plicatvs 2 . P- 386. 

 d' . Size smaller: wing 107 incbes .... narcondumi 2 , p. .38(3. 



1. Rhytidoceros undulatus. 



Le Calao a sasque festonne, Levaill. Hist. Nat. d'Ois. VAmcr. i. 



p. 41, pis. XX. &xxi. (1801). 

 Le Calao Javan, Levaill. Hist. Nat. d'Ois. I'Ame): i. p. 45, pi. xxii. 



(1801) ; id. Hist. Nat. Ois. d'Afr. v. p. 12.5, pi. 239 (1800) ; Jleill. 



N. Diet. d'Hist. Nat. iv. p. -595 (1816). 

 Buceros undulatus, Shaic, Gen. Zool. viii. p. 26 (1811); Horsf. 



Trans. Li7m. S«c. xiii. p. 175 (1822) ; Viff. App. Mem. Raffl. 



p. (-66 (1830); Less.Traite Orn. p. 2.'J5 [part.] (1831). 

 Rhytidoceros undulatus, Tireeddale, Ibis, 1877, p. 292 ; Elliot, Monoq. 



ihiccrot. pi. 35 [text] (1877) ; Gates, B. Brit. Biirmah, ii. p. 93 



(1883) ; Oates, ed. Hume's Nests ^ Ec/gs Ind. B. iii. p. 80 (1890). 

 Rhvticeros undulatus, Hume !<,• Dav. Sir. F. vi. p. Ill (1878). 



Hume, ,Str. F. viii. p. 86 (1879) ; Binqliam., Str. F. viii. pp. 194' 



463 (1879), ix. p. 1.59 (1880) ; Htme, Str. F. ix. p. 247 (1880) 



Oates, Str. F. x. p. 189 (1882) ; Hume, Str. F. xi. p. 52 (1888). 



