152 



Descriptions of some supposed New, or 



Dimensions. 



Adult. 



From nostril to the tip in a 



straight line ... 4 inches. 



From anterior edge of protu- 

 berance to the tip of the bill. 2{' v ,, 

 From base to tip in a straight 



line. 4/v ,, 



Of white portion of the crest 

 from above the eye 3 T 7 „ ,, ^ 



Young. 



Total length 28 inches. I Bill from gape - 4 inches. 



Wing HtV » » nostril 3& „ 



Tarsns 1^ ,, 'Total length from base 4^ „ 



Hallux ItV » White portion of the crest. . 3 „ 



Gonys 2ft „ 





29 inches 



Wing 



• „ 





ItV >» 



Hallux 



Wo „ 



Gonys 









Protuberance from base. . 



3 



Buceros Elliotti — New Species. 



This species resembles the last one very closely, but, it is 

 much larger, and wants the white bordered crest, otherwise the ' 

 description I have given of the plumage of B. Malayanus 

 will do for this one ; in my only specimen, the bill has evi- 

 dently arrived at maturity, and is perfectly white ; the pos- 

 terior portion of the casque covers a portion of the vertex, and 

 is eight-tenths of an inch higher than the occipital plane, its 

 posterior edge being one and seven-tenths of an inch behind 

 the nostril when measured in a straight line ; a ridge proceeds 

 from the nostril, and marks where the true culmen would be 

 if the casque were absent ; this ridge ends where the culmen 

 begins ; two more ridges run almost parallel to it, and above 

 it, thereby causing two corresponding furrows ; a third furrow 

 is formed by the uppermost ridge and the swell of the casque, 

 which commences to bulge above it ; a fourth ridge is thus 

 formed, but which is much broader and more rounded than 

 the lower ones, and is bounded along its superior edge by a 

 fourth furrow which is the last. The casque becomes compress- 

 ed as it advances on the bill, and is at last narrowed into a 

 point, its anterior edge instead of being perpendicular with 

 the occipital plane, forms with it (supposing the occipital plane 

 to be continued) an obtuse angle, and consequently an acute 



